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University of Texas – Austin
1.
-1250-2679.
Unpacking the sustainability of Meal Kit Delivery : a comparative analysis of energy use, carbon emissions, and related costs for Meal Kit services and grocery stores.
Degree: MBA, Business Administration, 2017, University of Texas – Austin
URL: http://hdl.handle.net/2152/61651
► According to the EPA, food waste represents the largest single share of landfilled municipal solid waste in the United States, followed closely by plastics and…
(more)
▼ According to the EPA, food waste represents the largest single share of landfilled municipal solid waste in the United States, followed closely by plastics and paper products (EPA, 2016). These materials are a staple of the food distribution industry. Their use, recycling, and disposal all contribute to energy waste and carbon emissions. Meal Kit Delivery (MK) services claim to play a role in reducing food waste by delivering pre-portioned ingredients for home-cooked meals to residential customers, who then use recipe cards to prepare meals in their own homes (Peters, 2016). However, smaller food portions and direct-to-door delivery may increase the overall packaging used per meal, and other components of the supply chain may also impact the environmental footprint of MK services. This study seeks to quantify the differences in energy use and emissions—and their related costs— between MK services and traditional grocery stores. An average MK service meal is compared to a meal prepared using the same ingredients purchased from a grocery outlet. Energy use and emissions are evaluated in five categories: building, last mile transportation, product packaging, food waste, and end of life material management. The economic impact of each model is evaluated based on estimated energy and emissions costs. Each variable is quantified using a combination of meta-analysis, direct measurement, and probabilistic analysis. On average the MK service scenario used 20% less energy and generated 4% less emissions than the grocery-equivalent scenario. These savings amounted to an energy and emission cost savings of around 33%. In addition, MK services generated around 3.7 more pounds of packaging material per meal. These findings suggest that companies in both industries have opportunities to reduce environmental impacts and costs by improving the efficiency of their supply chains and developing creative solutions to address top energy use and emission sources.
Advisors/Committee Members: Webber, Michael E. (advisor).
Subjects/Keywords: Sustainability; Supply chain; Food waste; Environmental impact; Sustainable business; Grocery; Meal Kit Delivery; Solid waste; Energy; Emissions
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APA (6th Edition):
-1250-2679. (2017). Unpacking the sustainability of Meal Kit Delivery : a comparative analysis of energy use, carbon emissions, and related costs for Meal Kit services and grocery stores. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/61651
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-1250-2679. “Unpacking the sustainability of Meal Kit Delivery : a comparative analysis of energy use, carbon emissions, and related costs for Meal Kit services and grocery stores.” 2017. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/61651.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-1250-2679. “Unpacking the sustainability of Meal Kit Delivery : a comparative analysis of energy use, carbon emissions, and related costs for Meal Kit services and grocery stores.” 2017. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-1250-2679. Unpacking the sustainability of Meal Kit Delivery : a comparative analysis of energy use, carbon emissions, and related costs for Meal Kit services and grocery stores. [Internet] [Masters thesis]. University of Texas – Austin; 2017. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/61651.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-1250-2679. Unpacking the sustainability of Meal Kit Delivery : a comparative analysis of energy use, carbon emissions, and related costs for Meal Kit services and grocery stores. [Masters Thesis]. University of Texas – Austin; 2017. Available from: http://hdl.handle.net/2152/61651
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
2.
Zaborowski, Jeremy Ronald.
Valuation of an advanced combined cycle power plant and its cost of new entry (CONE) into the ERCOT market.
Degree: MSin Energy and Earth Resources, Energy and Earth Resources, 2014, University of Texas – Austin
URL: http://hdl.handle.net/2152/26019
► The Texas ERCOT market is one of the most open, deregulated electricity markets in the world. This open market brought electricity costs down for Texas…
(more)
▼ The
Texas ERCOT market is one of the most open, deregulated electricity markets in the world. This open market brought electricity costs down for
Texas residents and businesses, creating a much more competitive economic climate. However, these low prices currently generate insufficient revenue for generators to finance construction of new or replacement generation assets. In the instance of combined cycle advanced natural gas, the Independent Market Monitor 2012 annual report estimated that a plant needed to generate 2.5 times as much as revenue it did in 2012 to incent new generation.
This author argues that while the gap is still significant, the continuous changes to the ERCOT market since its inception make an historical examination like that used by the IMM less accurate. New market rules such as price caps or changes in fuel markets through new technologies like hydraulic fracturing create a very different valuation gap than a model based on historical activity alone. This analysis attempts to get a more accurate approximation of the gap through the use of publicly traded futures contracts for natural gas and electricity. Electricity futures reflect market expectations of revenue based on current and future market rules. Gas futures reflect price expectations in light of market changes like fracturing, potential LNG exports, and other changes. Financial positions can be maintained in both markets to give a fixed rate of return. Using this method, one can create a very conservative valuation model that still more accurately reflects market sentiment.
This thesis starts with a brief history of ERCOT deregulation from the early 2000s to present in order to clarify for the reader the changes that have taken place in the market. It then demonstrates the futures-valuation model using an advanced combined cycle power plant as an example.
Advisors/Committee Members: Webber, Michael E., 1971- (advisor).
Subjects/Keywords: ERCOT; Valuation; Power plant; Deregulation; Utility; Electricity market; Energy market; Power market; Reliability; Capacity; Capacity market; Texas; Futures; Natural gas; Deregulated market; Construction; CAISO
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Zaborowski, J. R. (2014). Valuation of an advanced combined cycle power plant and its cost of new entry (CONE) into the ERCOT market. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/26019
Chicago Manual of Style (16th Edition):
Zaborowski, Jeremy Ronald. “Valuation of an advanced combined cycle power plant and its cost of new entry (CONE) into the ERCOT market.” 2014. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/26019.
MLA Handbook (7th Edition):
Zaborowski, Jeremy Ronald. “Valuation of an advanced combined cycle power plant and its cost of new entry (CONE) into the ERCOT market.” 2014. Web. 19 Jan 2021.
Vancouver:
Zaborowski JR. Valuation of an advanced combined cycle power plant and its cost of new entry (CONE) into the ERCOT market. [Internet] [Masters thesis]. University of Texas – Austin; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/26019.
Council of Science Editors:
Zaborowski JR. Valuation of an advanced combined cycle power plant and its cost of new entry (CONE) into the ERCOT market. [Masters Thesis]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/26019

University of Texas – Austin
3.
Johnson, Samuel Caleb.
A method for evaluating grid stability with high penetrations of renewable energy and energy storage.
Degree: PhD, Mechanical Engineering, 2019, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/8993
► The rapid growth of electricity generation from variable renewable resources like wind and solar has greatly impacted wholesale energy markets and raised questions about future…
(more)
▼ The rapid growth of electricity generation from variable renewable resources like wind and solar has greatly impacted wholesale energy markets and raised questions about future grid stability. With this paradigm shift, some existing coal, natural gas, and nuclear generators have encountered financial struggles, which has led to widespread retirements and tight capacity margins in some regions. Although this change could lead to reduced carbon emissions, synchronous generators provide some important reliability benefits to the grid that other technologies cannot easily replace. To assess the impact of an energy transition away from synchronous generation (e.g. fossil fuel fired power plants) and towards non-synchronous generation (e.g. wind and solar), future grid stability was investigated in the following three studies: (1) evaluating rotational inertia as a component of grid reliability with high penetrations of variable renewable energy, (2) determining the impact of non-synchronous generation on grid stability and identifying mitigation pathways, and (3) quantifying the regional economic and stability impacts of grid-scale energy storage.
First, a method was developed to assess grid stability with increasing penetrations of non-synchronous renewable energy generation to determine when an electric grid might be more vulnerable to frequency contingencies, such as a generator outage. Unit commitment and dispatch modeling was used to quantify system inertia, an established proxy for grid stability. A case study of the Electric Reliability Council of
Texas grid was used to illustrate the method. Results from the modeled scenarios showed that the
Texas grid is resilient to major grid changes, even with relatively high penetrations (~30% of annual energy generation compared to 19% in 2018) of renewable energy. However, retiring nuclear power plants and private-use networks in the model led to unstable inertia levels in our results. When the system inertia was constrained to meet a minimum threshold in our model, multiple coal and natural gas combined-cycle plants were dispatched at part-load or at their minimum operating level to maintain stable system inertia levels. This behavior is expected to expand with higher renewable energy penetrations and could occur on other electric grids that are reliant on synchronous generators for inertia support.
A method was also developed for assessing the impacts of stability support from inverter-connected resources. In this analysis, a fully disaggregated, inertia-constrained unit commitment and dispatch model was used to study the stability of future grid scenarios with high penetrations of non-synchronous renewable energy generation. As before, the
Texas grid (the Electric Reliability Council of
Texas – ERCOT) was used as a test case and instances when the system inertia fell below 100 GW·s (the grid's current minimum level) were found, starting at an annual renewable energy penetration (including both synchronous and non-synchronous renewable resources) of ~30% in our…
Advisors/Committee Members: Webber, Michael E., 1971- (advisor).
Subjects/Keywords: Energy storage; Renewable energy; Energy market; Transmission; Grid stability; Grid reliability; Unit commitment and dispatch; Non-synchronous; Synchronous; Wind; Solar; Electricity; Texas; ERCOT; Rotational inertia; System inertia; Fast frequency response
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APA ·
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MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Johnson, S. C. (2019). A method for evaluating grid stability with high penetrations of renewable energy and energy storage. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/8993
Chicago Manual of Style (16th Edition):
Johnson, Samuel Caleb. “A method for evaluating grid stability with high penetrations of renewable energy and energy storage.” 2019. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://dx.doi.org/10.26153/tsw/8993.
MLA Handbook (7th Edition):
Johnson, Samuel Caleb. “A method for evaluating grid stability with high penetrations of renewable energy and energy storage.” 2019. Web. 19 Jan 2021.
Vancouver:
Johnson SC. A method for evaluating grid stability with high penetrations of renewable energy and energy storage. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2019. [cited 2021 Jan 19].
Available from: http://dx.doi.org/10.26153/tsw/8993.
Council of Science Editors:
Johnson SC. A method for evaluating grid stability with high penetrations of renewable energy and energy storage. [Doctoral Dissertation]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/8993

University of Texas – Austin
4.
-1069-1418.
The energy-water nexus : an analysis and comparison of various configurations integrating desalination with renewable power.
Degree: MSin Engineering, Environmental and Water Resources Engineering, 2015, University of Texas – Austin
URL: http://hdl.handle.net/2152/31906
► Water stress is a worldwide reality. Planners and managers of water resources around the world are tasked with finding new, creative, and innovative solutions to…
(more)
▼ Water stress is a worldwide reality. Planners and managers of water resources around the world are tasked with finding new, creative, and innovative solutions to challenges posed by growing populations and declining water supplies. Securing safe drinking water, however, has impacts beyond the water sector. In particular, the connection between energy and water must be carefully considered to avoid unwelcome increases in energy consumption as a result of new water management strategies. One strategy that is gaining increasing attention is desalination of brackish groundwater. However, desalination is an energy-intensive process and could have negative impacts in the energy sector if conventional approaches are used. Relying on fossil fuels for desalination could drive up carbon dioxide emissions associated with water treatment and increase the cost required to produce drinking water. Integrating desalination with renewable power sources such as wind and so- lar energy can mitigate concerns regarding the energy intensity of desalination. By coupling water treatment with non-carbon emitting sources of power, it is possible to meet growing water demands in a sustainable manner. At the same time, water pro- duction offers an opportunity to address problems associated with the intermittent nature of wind and solar power production. Desalination is a time-flexible process that pairs well with wind and solar power, two sources of energy that are limited in application by their daily and seasonal variability. Integrating desalination with wind and solar power offers a solution to energetic challenges of water production while using wind and solar power for desalination offers a solution to challenges associated with the intermittent nature of renewable power. Additionally, utilizing photovoltaic-thermal (PVT) solar modules in an inte- grated facility could be advantageous to both the water and solar power production processes. Brackish groundwater, which is at a relatively cool temperature, can be used to cool solar panels, which suffer from losses in efficiency associated with tem- perature increases. At the same time, solar panels can be used to preheat feed water, a process that reduces the energetic requirement for reverse osmosis desalination. Us- ing the temperature difference between brackish groundwater and solar panels to an engineering advantage can be beneficial for the production of both solar power and drinking water. This thesis offers an investigation of desalination powered by wind and solar energy, including a study of a configuration using PVT solar panels. First, a water treatment was developed to estimate the power requirement for brackish groundwa- ter reverse-osmosis (BWRO) desalination. Next, an energy model was designed to (1) size a wind farm based on this power requirement and (2) size a solar farm to preheat water before reverse osmosis treatment. Finally, an integrated model was developed that combines results from the water treatment and energy models. The integrated model uses optimization to…
Advisors/Committee Members: Webber, Michael E., 1971- (advisor).
Subjects/Keywords: Water-energy nexus; Desalination
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-1069-1418. (2015). The energy-water nexus : an analysis and comparison of various configurations integrating desalination with renewable power. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/31906
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-1069-1418. “The energy-water nexus : an analysis and comparison of various configurations integrating desalination with renewable power.” 2015. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/31906.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-1069-1418. “The energy-water nexus : an analysis and comparison of various configurations integrating desalination with renewable power.” 2015. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-1069-1418. The energy-water nexus : an analysis and comparison of various configurations integrating desalination with renewable power. [Internet] [Masters thesis]. University of Texas – Austin; 2015. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/31906.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-1069-1418. The energy-water nexus : an analysis and comparison of various configurations integrating desalination with renewable power. [Masters Thesis]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/31906
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
5.
Glazer, Yael Rebecca.
The potential for using energy from flared gas or renewable resources for on-site hydraulic fracturing wastewater treatment.
Degree: MSin Engineering, Environmental and Water Resources Engineering, 2014, University of Texas – Austin
URL: http://hdl.handle.net/2152/26020
► The oil and gas well completion method of hydraulic fracturing faces several environmental challenges: the process is highly water-intensive; it generates a significant volume of…
(more)
▼ The oil and gas well completion method of hydraulic fracturing faces several environmental challenges: the process is highly water-intensive; it generates a significant volume of wastewater; and it is associated with widespread flaring of co-produced natural gas. One possible solution to simultaneously mitigate these challenges is to use the energy from flared natural gas to power on-site wastewater treatment, thereby reducing 1) flared gas without application, 2) the volumes of wastewater, and 3) the volumes of freshwater that need to be procured for subsequent shale production, as the treated wastewater could be reused. In regions with minimal flaring a potential solution is to couple renewable electricity (generated from solar and wind energy) with on-site wastewater treatment, thereby 1) reducing the volumes of wastewater, 2) reducing the volumes of freshwater that need to be procured for subsequent shale production, and 3) displacing fossil fuel energy for treatment. This study builds an analytical framework for assessing the technical potential of these approaches. In this research, the hydraulic fracturing wastewater characteristics (such as quality, quantity, and flow rates) were considered along with various treatment technologies best suited to utilizing natural gas and renewable electricity, using the Permian Basin in
west
Texas as a geographic test bed for analysis. For the analysis looking at using flared natural gas energy for on-site treatment, the required volume of gas to meet the thermal energy requirements for treatment was calculated on a per-well basis. Additionally, the volume of product water (defined here as the treated water that can be reused) based on the technology type was determined. Finally, the theoretical maximum volume of product water that could be generated using the total volume of natural gas that was flared in
Texas in 2012 as a benchmark was calculated. It was concluded that the thermal energy required to treat wastewater that returns to the surface over the first ten days after a well is completed is 140–820 Million British Thermal Units (MMBTU) and would generate 750–6,800 cubic meters of product water depending on the treatment technology. Additionally, based on the thermal technologies assessed in this study, the theoretical maximum volume of product water that can be generated statewide using the energy from the flared gas in 2012 is 180–540 million cubic meters, representing approximately 3–9% of the state’s annual water demand for municipal purposes or 1–2.4% of total statewide water demand for all purposes. This is enough gas to treat more water than was projected would be used for the entire mining sector in 2010 in
Texas. For the analysis coupling renewable electricity with on-site treatment, the necessary energy for water management upstream and downstream of a well site was calculated and compared with the current energy requirements and those of a proposed strategy where a portion of the wastewater is treated on-site and reused on a subsequent well. Through this…
Advisors/Committee Members: Webber, Michael E., 1971- (advisor).
Subjects/Keywords: Hydraulic fracturing; Natural gas; Wastewater; Flared gas; Renewable resources
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Glazer, Y. R. (2014). The potential for using energy from flared gas or renewable resources for on-site hydraulic fracturing wastewater treatment. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/26020
Chicago Manual of Style (16th Edition):
Glazer, Yael Rebecca. “The potential for using energy from flared gas or renewable resources for on-site hydraulic fracturing wastewater treatment.” 2014. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/26020.
MLA Handbook (7th Edition):
Glazer, Yael Rebecca. “The potential for using energy from flared gas or renewable resources for on-site hydraulic fracturing wastewater treatment.” 2014. Web. 19 Jan 2021.
Vancouver:
Glazer YR. The potential for using energy from flared gas or renewable resources for on-site hydraulic fracturing wastewater treatment. [Internet] [Masters thesis]. University of Texas – Austin; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/26020.
Council of Science Editors:
Glazer YR. The potential for using energy from flared gas or renewable resources for on-site hydraulic fracturing wastewater treatment. [Masters Thesis]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/26020

University of Texas – Austin
6.
Rose, Heather.
A study on the interdependency of hydroponic wastewater quality and the energy and costs for onsite treatment.
Degree: MSin Energy and Earth Resources, Energy and Earth Resources, 2020, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/10171
► Hydroponic growing methods have the potential to use less water while producing higher yields when compared to traditional soil-based agriculture. However, hydroponic wastewater is a…
(more)
▼ Hydroponic growing methods have the potential to use less water while producing higher yields when compared to traditional soil-based agriculture. However, hydroponic wastewater is a nutrient dense effluent that can be harmful to the environment if not managed properly. Onsite treatment and reuse of hydroponic wastewater would avoid thousands of gallons a month of freshwater use while preventing this effluent from harming receiving streams. The efficacy, energy requirements and costs of some treatment methods are not well known. To assess the efficacy of select treatment methods, the contaminants in hydroponic wastewater were measured using samples of hydroponic wastewater collected from a greenhouse test facility and analyzed by an environmental laboratory. Contaminants evaluated were Total Dissolved Solids (TDS), calcium, potassium, magnesium, total phosphorus, nitrogen, and Total Organic Carbon (TOC). Wastewater samples were also treated onsite using a sand filter, a granular activated carbon (GAC) filter, and reverse osmosis (RO). Samples of wastewater treated by these methods were then re-analyzed by the environmental laboratory and post-treatment concentrations of the studied contaminants were recorded. Sand and GAC filtration were shown to be essentially ineffective for contaminant removal due to the high concentrations of metals in the hydroponic wastewater. Reverse osmosis was the most effective treatment method, removing an average of 85% TDS concentration in wastewater samples. The results from the water quality analysis showed that Reverse Osmosis was the only treatment method that effectively removed the large concentration of metal contaminants in the wastewater. For this reason, only reverse osmosis was analyzed for energy and cost requirements for onsite treatment of hydroponic wastewater. The energy requirements to treat hydroponic wastewater onsite by reverse osmosis ranged from 3 to 43 kWh per day, depending on the facility size and percent of water treated. The annualized cost of treatment ranged from 0.63 to 2.83 per thousand gallons of water treated. Finally, a cost savings from reduced water bills analysis was also performed using local water utility prices in
Austin TX. Based on the assumptions made for water meter size and monthly water use, it was found that financial savings could be achieved in all facility sizes with a payback period of 7 to 24 months if facilities utilized municipal water as their water source. These results can help to determine whether recycling hydroponic wastewater is feasible within financial and energy constraints as a way to avoid discharging harmful effluent and using thousands of gallons of source water each month.
Advisors/Committee Members: Faust, Kasey M. (advisor), Webber, Michael E., 1971- (advisor).
Subjects/Keywords: Hydroponic wastewater; Onsite water treatment
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rose, H. (2020). A study on the interdependency of hydroponic wastewater quality and the energy and costs for onsite treatment. (Masters Thesis). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/10171
Chicago Manual of Style (16th Edition):
Rose, Heather. “A study on the interdependency of hydroponic wastewater quality and the energy and costs for onsite treatment.” 2020. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://dx.doi.org/10.26153/tsw/10171.
MLA Handbook (7th Edition):
Rose, Heather. “A study on the interdependency of hydroponic wastewater quality and the energy and costs for onsite treatment.” 2020. Web. 19 Jan 2021.
Vancouver:
Rose H. A study on the interdependency of hydroponic wastewater quality and the energy and costs for onsite treatment. [Internet] [Masters thesis]. University of Texas – Austin; 2020. [cited 2021 Jan 19].
Available from: http://dx.doi.org/10.26153/tsw/10171.
Council of Science Editors:
Rose H. A study on the interdependency of hydroponic wastewater quality and the energy and costs for onsite treatment. [Masters Thesis]. University of Texas – Austin; 2020. Available from: http://dx.doi.org/10.26153/tsw/10171

University of Texas – Austin
7.
Hernandez, Guillermo, active 21st century.
Utility management of plug-in electric vehicle residential charging.
Degree: MSin Engineering, Electrical and Computer Engineering, 2014, University of Texas – Austin
URL: http://hdl.handle.net/2152/26005
► The purpose of this study is to identify realistic opportunities and barriers regarding PEV charge management by analyzing real-world PEV data from customers in the…
(more)
▼ The purpose of this study is to identify realistic opportunities and barriers regarding PEV charge management by analyzing real-world PEV data from customers in the
Austin Energy service area and evaluating direct, quantifiable economic value benefits as it relates new revenue, cost avoidance, CO2 reductions, and MW potential for peak shaving. The main objective is to provide business analysis to support the strategic road-map for
Austin Energy PEV home charging programs. Three main charge program implementations are considered: Uncontrolled Charging, Time of Use Rates, and One Way Utility Control.
The data used for the analysis includes 45 households with PEVs from Mueller area; 24 were under a Time of Use trial with pricing incentives to charge at night, and 21 receive normal
Austin Energy rates. Data analysis shows that 66% of Time of Use trial group successfully shifted PEV load to Off Peak hours (10:00PM to 6:00AM).
The potential of One Way control, based on load availability for interruption, shows that it will not be possible to implement until there are 37,000 PEVs in the
Austin Energy area. Uncontrolled Charging represents a risk by increasing load during the residential peak. Time of Use Rates program will incentivize load shifting, reduce wholesale energy costs for
Austin Energy while allowing customers to reduce their overall electricity bill.
Advisors/Committee Members: Baldick, Ross (advisor), Webber, Michael E., 1971- (advisor).
Subjects/Keywords: Electric vehicle; Time of use; Demand response
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APA (6th Edition):
Hernandez, Guillermo, a. 2. c. (2014). Utility management of plug-in electric vehicle residential charging. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/26005
Chicago Manual of Style (16th Edition):
Hernandez, Guillermo, active 21st century. “Utility management of plug-in electric vehicle residential charging.” 2014. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/26005.
MLA Handbook (7th Edition):
Hernandez, Guillermo, active 21st century. “Utility management of plug-in electric vehicle residential charging.” 2014. Web. 19 Jan 2021.
Vancouver:
Hernandez, Guillermo a2c. Utility management of plug-in electric vehicle residential charging. [Internet] [Masters thesis]. University of Texas – Austin; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/26005.
Council of Science Editors:
Hernandez, Guillermo a2c. Utility management of plug-in electric vehicle residential charging. [Masters Thesis]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/26005

University of Texas – Austin
8.
-3677-5743.
The effect of channel parameters on the adiabatic film cooling effectiveness of shaped holes in crossflow.
Degree: MSin Engineering, Mechanical engineering, 2015, University of Texas – Austin
URL: http://hdl.handle.net/2152/34143
► There is limited information in the literature on the behavior of shaped film cooling holes fed by crossflow and even less information on the effect…
(more)
▼ There is limited information in the literature on the behavior of shaped film cooling holes fed by crossflow and even less information on the effect of crossflow parameters on film cooling performance. Here, two scaled film cooling models were used to independently vary the crossflow Reynolds numbers in the range of 36,000 to 57,000 and the crossflow velocity ratio from 0.36 to 0.64. Careful attention was paid to controlling physical parameters between comparisons to isolate the effects of internal velocity ratio or Reynolds number on the performance of shaped holes. In the process of controlling the physical parameters of the system, a novel correction for coolant to mainstream density ratio was proposed. The results of this study showed that channel velocity ratio had a larger effect on the film cooling performance of shaped holes than channel Reynolds number. When the mass flux of fluid through the film cooling holes was at the highest and lowest value, increasing the channel velocity ratio decreased the film cooling effectiveness. At a middle mass flux, the outcome was opposite such that an increase in channel velocity ratio resulted in increased effectiveness.
Advisors/Committee Members: Bogard, David G. (advisor), Webber, Michael E. (committee member).
Subjects/Keywords: Film cooling; Turbomachinery
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APA (6th Edition):
-3677-5743. (2015). The effect of channel parameters on the adiabatic film cooling effectiveness of shaped holes in crossflow. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/34143
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-3677-5743. “The effect of channel parameters on the adiabatic film cooling effectiveness of shaped holes in crossflow.” 2015. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/34143.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-3677-5743. “The effect of channel parameters on the adiabatic film cooling effectiveness of shaped holes in crossflow.” 2015. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-3677-5743. The effect of channel parameters on the adiabatic film cooling effectiveness of shaped holes in crossflow. [Internet] [Masters thesis]. University of Texas – Austin; 2015. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/34143.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-3677-5743. The effect of channel parameters on the adiabatic film cooling effectiveness of shaped holes in crossflow. [Masters Thesis]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/34143
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
9.
-1099-6871.
Low temperature heat and water recovery from supercritical coal plant flue gas.
Degree: MSin Engineering, Mechanical engineering, 2015, University of Texas – Austin
URL: http://hdl.handle.net/2152/31996
► For this work, I constructed an original thermodynamic model to estimate waste heat and water recovery from the flue gas of a supercritical coal plant…
(more)
▼ For this work, I constructed an original thermodynamic model to estimate waste heat and water recovery from the flue gas of a supercritical coal plant burning lignite, subbituminous, or bittuminous coal. This model was written in MATLAB as a list of linear equations based on first and second law analyses of the power plant components. This research is relevant because coal accounted for the largest increase in primary energy consumption worldwide as recently as 2013. Coal-fired electricity generation is particularly water intensive. As populations increase, especially in the developing world, much of the increased demand for electricity will be provided by new coal-fired power plants. One way to improve the efficiency of a coal-fired power plant is to recover the low temperature waste heat from the flue gas and use it to preheat combustion air or boiler feedwater. A low temperature economizer or flue gas cooler can be used for this purpose to achieve overall efficiency improvements as high as 0.4%. However, a side effect of the efficiency improvements is an increase in water consumption factor of nearly 10%. The water consumption factor can be reduced with the addition of a flue gas dryer after the flue gas cooler. The flue gas dryer is a condensing heat exchanger between the flue gas and ambient air. As the flue gas cools, its water content condenses and can be recovered and treated for use within the plant. In general, the results indicate that low temperature waste heat and water recover from boiler flue gas would be more feasible and beneficial for coal plants burning lignite as opposed to higher quality coal. Because these plants already have a lower efficiency, the relative increase in efficiency is somewhat higher. Similarly, the relative increase in water consumption factor is somewhat lower for a lignite plant. The high moisture content and dew point of the flue gas produced from lignite combustion makes it easier to recover water with a flue gas dryer. The higher water recovery factor along with the lower water consumption factor means that a greater percentage of the water evaporated in the cooling tower can be recovered in the flue gas dryer of a lignite plant than for a plant burning higher quality coal.
Advisors/Committee Members: Webber, Michael E., 1971- (advisor), Buckingham, Fred P (committee member).
Subjects/Keywords: Energy efficiency; Water recovery; Coal boiler; Flue gas
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-1099-6871. (2015). Low temperature heat and water recovery from supercritical coal plant flue gas. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/31996
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-1099-6871. “Low temperature heat and water recovery from supercritical coal plant flue gas.” 2015. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/31996.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-1099-6871. “Low temperature heat and water recovery from supercritical coal plant flue gas.” 2015. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-1099-6871. Low temperature heat and water recovery from supercritical coal plant flue gas. [Internet] [Masters thesis]. University of Texas – Austin; 2015. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/31996.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-1099-6871. Low temperature heat and water recovery from supercritical coal plant flue gas. [Masters Thesis]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/31996
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
10.
McGuirk, George Brennan.
Food expenditure measures to supplement net energy ratios for selected countries 1961-2011.
Degree: MSin Energy and Earth Resources, Energy and Earth Resources, 2014, University of Texas – Austin
URL: http://hdl.handle.net/2152/26910
► This thesis focuses on the relationship between food expenditures and the economy. In analogous fashion to Maxwell 2013 which calculated energy expenditures as a percentage…
(more)
▼ This thesis focuses on the relationship between food expenditures and the economy. In analogous fashion to Maxwell 2013 which calculated energy expenditures as a percentage of national and global gross domestic product (GDP), this thesis examined three available food expenditure datasets to study the relationship between food expenditures as a percentage of GDP and economic growth. The analysis calculated two metrics, Primary Consumption Expenditures and Final Consumption Expenditures which were used to compare the available datasets and create a more robust hybrid dataset containing data for 178 countries with an average time span of 40 years that was used to study the relationship between global economic growth and food expenditures. Historical evidence does not suggest that food has imposed a limit on economic growth; however, recent trends over the past decade associated with biofuel production suggest the global economy has entered a new era with rapidly rising food prices and expenditures. As food resources continue to be used as industrial energy inputs, it is critical to include food expenditures in further analysis of potential impacts energy expenditures may have on economic growth.
Advisors/Committee Members: King, Carey Wayne, 1974- (advisor), Webber, Michael E., 1971- (advisor).
Subjects/Keywords: Food expenditures; Economy; Energy
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
McGuirk, G. B. (2014). Food expenditure measures to supplement net energy ratios for selected countries 1961-2011. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/26910
Chicago Manual of Style (16th Edition):
McGuirk, George Brennan. “Food expenditure measures to supplement net energy ratios for selected countries 1961-2011.” 2014. Masters Thesis, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/26910.
MLA Handbook (7th Edition):
McGuirk, George Brennan. “Food expenditure measures to supplement net energy ratios for selected countries 1961-2011.” 2014. Web. 19 Jan 2021.
Vancouver:
McGuirk GB. Food expenditure measures to supplement net energy ratios for selected countries 1961-2011. [Internet] [Masters thesis]. University of Texas – Austin; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/26910.
Council of Science Editors:
McGuirk GB. Food expenditure measures to supplement net energy ratios for selected countries 1961-2011. [Masters Thesis]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/26910

University of Texas – Austin
11.
-7869-081X.
An experimental and analytical method for assessing the integration of electric vehicles into the bulk power system.
Degree: PhD, Electrical and Computer Engineering, 2017, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/10195
► In recent years, several trends are indicating a move towards a very different bulk power system. Increased integration of renewables, energy storage, synchrophasors, microgrids, Internet…
(more)
▼ In recent years, several trends are indicating a move towards a very different bulk power system. Increased integration of renewables, energy storage, synchrophasors, microgrids, Internet of Things devices, and electric vehicles are increasing the complexity of the system. While these changes have the potential to lead to significant reductions in environmental impact and peak demand growth, they also require significantly stronger, granular, and faster-moving controls to ensure reliability and resiliency. Previous research shows that electric vehicles have the potential to significantly reduce global (e.g., CO2), and regional (e.g., particulate) emissions associated with transportation. As fast-responding flexible loads, it was hypothesized that electric vehicles could participate in reliability-centric markets. To study the integration of these vehicles into the bulk power system, this project involved building an experimental charging system for electric vehicles with bulk modeling of the electric grid. This research test bed was developed in Taylor,
Texas, to analyze real-world behavior of EVs in response to control signals. The diverse group of participating vehicles provided rapid response between 1/6 and 1/2 second, suggesting a strong capacity for providing grid reliability services. Successful real-world tests of primary frequency response and dispatched load control highlight the scalability of this approach. Vehicle charging patterns (as measured by load ramp and current waveform at peak) were observed to be clustered by vehicle make, indicating predictive value of high-resolution waveform measurement at the beginning of a charging session. Simulation of a network with intermittent renewables shows that inclusion of these rapidly responding EVs can strengthen system stability in normal, black start, and islanded situations. It shows that controlled EV charging can provide reliable means for improved renewables integration. The aggregation of electric vehicle charging can certainly provide fast-responding services that provide frequency support, congestion management, synthetic inertia, and many other useful services of significant value to the reliability of the bulk power system
Advisors/Committee Members: Baldick, Ross (advisor), Webber, Michael E., 1971- (advisor), Barber, Suzanne (committee member), Markman, Arthur (committee member), Santoso, Surya (committee member).
Subjects/Keywords: Electric vehicles; Ancillary services; Synchrophasor
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-7869-081X. (2017). An experimental and analytical method for assessing the integration of electric vehicles into the bulk power system. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/10195
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-7869-081X. “An experimental and analytical method for assessing the integration of electric vehicles into the bulk power system.” 2017. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://dx.doi.org/10.26153/tsw/10195.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-7869-081X. “An experimental and analytical method for assessing the integration of electric vehicles into the bulk power system.” 2017. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-7869-081X. An experimental and analytical method for assessing the integration of electric vehicles into the bulk power system. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2017. [cited 2021 Jan 19].
Available from: http://dx.doi.org/10.26153/tsw/10195.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-7869-081X. An experimental and analytical method for assessing the integration of electric vehicles into the bulk power system. [Doctoral Dissertation]. University of Texas – Austin; 2017. Available from: http://dx.doi.org/10.26153/tsw/10195
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
12.
James, Corey Matthew, 1976-.
Reducing the cost of operational water on military bases through modeling, optimization, and control.
Degree: PhD, Chemical Engineering, 2017, University of Texas – Austin
URL: http://hdl.handle.net/2152/62970
► Military municipal water systems provide safe and clean water to the surrounding community while also supporting the intense and often unpredictable training schedules of the…
(more)
▼ Military municipal water systems provide safe and clean water to the surrounding community while also supporting the intense and often unpredictable training schedules of the tenant units. Much like their civilian counterparts, military water systems are also consumers of great amounts of energy and capital. As a part of the Army Net Zero program in 2011, an annual water inventory conducted on eight U.S. Army installations concluded that consumption was 5.5 billion gallons. Using the Environmental Protection Agency’s average national estimate of 1,500 kWh of energy consumed for every 1,000 gallons of treated water, it is readily apparent that the department of defense is a heavy consumer of both water and energy. Because the scale of the military’s usage is so vast, so too is their waste. Waste in water systems is common and commonly neglected, as many were initially constructed decades ago and the commodity that they transport is relatively inexpensive. However, recent droughts affecting regions of the United States highlighted the need to conserve and avoid waste, regardless of the commodity price. The efficiency of water systems is highly dependent upon developing accurate models and using those models to accurately deal with disturbances such as demand and chlorine concentration. This work extends water distribution system modeling, optimization, and control to a military setting where constraints are tighter for resiliency purposes, demands are often unpredictable, and saving money and water improves defense capabilities. First, a discretized nonlinear, equation based model of a known system at an existing U.S. Army installation that accurately predicts system behavior under typical demand considerations. The model is calibrated for accuracy using actual system data from a military installation and employed in a nonlinear optimization program to study reduction of costs, minimizing waste, and improvements in energy efficiency. Demand profiles were constructed from residential data and scaled to better represent demand on military bases. With very little adjustment, this model can be used to optimize similar systems in the military inventory. Water and energy savings exceed 10% in the optimized system, which predicts the Army could save greater than $1.5 million per year in the continental United States if rigorous optimization was conducted on storage and pumping at every base. It is shown that a reduced order empirical model is a viable alternative to the computationally expensive equation based approach. The empirical model is used to implement model predictive control, providing the system protection against large and unpredictable disturbances. This method adds an additional manipulated variable, chlorine injection, to ensure efficient constraint compliance. Experimental results show this method further supports the aforementioned savings in the optimized system alone, while efficiently handling disturbances. This research closes previous gaps in research, particularly on military installations. First,…
Advisors/Committee Members: Edgar, Thomas F. (advisor), Webber, Michael E., 1971- (advisor), Rochelle, Gary T (committee member), Baldea, Michael (committee member), Werth, Charles J (committee member).
Subjects/Keywords: Control; Optimization; Water; Energy; Military
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
James, Corey Matthew, 1. (2017). Reducing the cost of operational water on military bases through modeling, optimization, and control. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/62970
Chicago Manual of Style (16th Edition):
James, Corey Matthew, 1976-. “Reducing the cost of operational water on military bases through modeling, optimization, and control.” 2017. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/62970.
MLA Handbook (7th Edition):
James, Corey Matthew, 1976-. “Reducing the cost of operational water on military bases through modeling, optimization, and control.” 2017. Web. 19 Jan 2021.
Vancouver:
James, Corey Matthew 1. Reducing the cost of operational water on military bases through modeling, optimization, and control. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2017. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/62970.
Council of Science Editors:
James, Corey Matthew 1. Reducing the cost of operational water on military bases through modeling, optimization, and control. [Doctoral Dissertation]. University of Texas – Austin; 2017. Available from: http://hdl.handle.net/2152/62970

University of Texas – Austin
13.
Perez, Krystian Xavier.
Analysis, modeling and optimization of residential energy use from smart meter data.
Degree: PhD, Chemical engineering, 2016, University of Texas – Austin
URL: http://hdl.handle.net/2152/46454
► Approximately 38% of electricity consumption within the United States can be attributed to residential buildings, a vast share of which is in heating, ventilation and…
(more)
▼ Approximately 38% of electricity consumption within the United States can be attributed to residential buildings, a vast share of which is in heating, ventilation and cooling. The load placed on the grid by residential consumers is highly variable and strongly influenced by weather and human activity patterns. Meeting fluctuations in demand is challenging and expensive for electricity producers and grid operators. Reducing variability in residential energy use can contribute significantly to increasing the uniformity of energy demand on the grid and diminish reliance on inefficient, polluting “peaking” plants that are used to meet extremely high demands. Achieving this goal requires tight coordination between energy consumption and generation, as well as the means to store energy generated in periods of low demand for use during the time intervals when consumer demand peaks. There is a common perception that a single home has a minor impact on the entire grid. However, owing to the fact that consumption patterns of homes are similar, while a single home does not have a large impact on the grid, entire neighborhoods do. Motivated by the above, this work explores the interaction between residential energy consumption and the electric grid. An analysis, modeling and optimization framework on smart meter data is developed to anticipate and modulate energy usage of ensembles of residential homes in order to reduce peak power demand. Much of the data used in this work come from Pecan Street, Inc., a smart grid demonstration project in
Austin, TX. First, a nonintrusive load monitoring algorithm is developed to isolate air-conditioning (A/C) energy use from whole-house energy consumption data. Subsequently, a simplified reduced-order model is derived from smart meter data and thermostat set-point data to predict A/C energy use. The models of an ensemble of homes are placed within a centralized model predictive control scheme to minimize peak community A/C energy use. Reductions in peak energy use are achieved by shifting the thermostat set-points of individual homes. The approach is further expanded by simultaneously scheduling the operation of time-shiftable appliances to further reduce the community peak load. This integrated operation reduces peak loads by an average of 25.5%. This work also considers the impact of control and optimization techniques on designing a micro-grid that operates near autonomously from the electric power grid. Lastly, this work presents a tool to compare energy demand patterns of houses from smart meter data and indicates that high-energy houses would benefit from energy audits to improve energy efficiency.
Advisors/Committee Members: Edgar, Thomas F. (advisor), Baldea, Michael (advisor), Novoselac, Atila (committee member), Webber, Michael E (committee member), Rochelle, Gary T (committee member).
Subjects/Keywords: Residential energy; Home energy management
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Perez, K. X. (2016). Analysis, modeling and optimization of residential energy use from smart meter data. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/46454
Chicago Manual of Style (16th Edition):
Perez, Krystian Xavier. “Analysis, modeling and optimization of residential energy use from smart meter data.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/46454.
MLA Handbook (7th Edition):
Perez, Krystian Xavier. “Analysis, modeling and optimization of residential energy use from smart meter data.” 2016. Web. 19 Jan 2021.
Vancouver:
Perez KX. Analysis, modeling and optimization of residential energy use from smart meter data. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/46454.
Council of Science Editors:
Perez KX. Analysis, modeling and optimization of residential energy use from smart meter data. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/46454
14.
-6209-4423.
Wind power forecasting and its applications to the power system.
Degree: PhD, Electrical & Computer Engineering, 2015, University of Texas – Austin
URL: http://hdl.handle.net/2152/31412
► The goal of research in this dissertation is to bring more wind resources into the power grid by mitigating the uncertainty of the current wind…
(more)
▼ The goal of research in this dissertation is to bring more wind resources into the power grid by mitigating the uncertainty of the current wind power, by developing a new algorithm to respond to the fluctuation of the future wind power, and by building additional transmission lines to bring more wind resources from a remote area to the load center. First, in order to overcome the wind power uncertainty, the probabilistic and ensemble wind power forecasting is proposed to increase the forecasting accuracy and to deliver the probability density function of the uncertainty. Accurate wind power forecasting reduces the amounts and cost of ancillary services (AS). As the mismatch between the bid and actual amount of delivered energy decreases, the imbalance between supply and demand also decreases. If the forecasting ahead is increased up to 24 hours, accurate wind power forecasting can also help wind farm owners bid the exact amount of wind power in the day ahead (DA) market. Furthermore, wind power owners can use the parametric probabilistic density of error distributions for hedging the price risk and building a better offer curve. Second, a novel algorithm to generate many wind power scenarios as a function of installed capacity of wind power is proposed based on an analysis of the power spectral density of wind power. Scenarios can be used to simulate the power system to estimate the required amount of AS to respond to the fluctuation of future wind power as the installed capacity of wind power increases. Scenarios have statistical characteristics of the future wind power that are regressed as a function of the installed capacity of wind power from the statistical characteristics of the current wind power. This algorithm can generate many possible scenarios to simulate the power system in many different situations. Third, optimal transmission expansion by simulating the power system with the multiple load and wind power scenarios in different locations is planned to prepare the preliminary result to bring more wind resources in remote areas to the load center in
Texas. In this process, the geographical smoothing effects of wind power and the stochastic correlation structure between the load and wind power are considered. Furthermore, the generalized dynamic factor model (GDFM) is used to synthesize load and wind power scenarios to keep their correlation structure. The premise of the GDFM is that a few factors can drive the correlated movements of load and wind power simultaneously, so the scenario generation process is parsimonious.
Advisors/Committee Members: Baldick, Ross (advisor), Santoso, Surya (committee member), Arapostathis, Aristotle (committee member), Webber, Michael (committee member), Morton, David (committee member).
Subjects/Keywords: Wind power forecasting; Generalized dynamic factor model; Power spectral density
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APA ·
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
-6209-4423. (2015). Wind power forecasting and its applications to the power system. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/31412
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-6209-4423. “Wind power forecasting and its applications to the power system.” 2015. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/31412.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-6209-4423. “Wind power forecasting and its applications to the power system.” 2015. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-6209-4423. Wind power forecasting and its applications to the power system. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2015. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/31412.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-6209-4423. Wind power forecasting and its applications to the power system. [Doctoral Dissertation]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/31412
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
15.
DeRosa, Sean Edward.
Impact of natural gas and natural gas liquids on chemical manufacturing in the United States.
Degree: PhD, Chemical engineering, 2016, University of Texas – Austin
URL: http://hdl.handle.net/2152/39644
► Natural gas and natural gas liquids production in the United States has increased dramatically since 2005, due primarily to recent advancements in horizontal drilling and…
(more)
▼ Natural gas and natural gas liquids production in the United States has increased dramatically since 2005, due primarily to recent advancements in horizontal drilling and hydraulic fracturing. As raw materials for chemical production, the increased availability, at low cost, of these materials has the potential to change the structure of the United States chemical manufacturing industry. Industry-wide modeling, coupled with region-specific analysis, was used to map potential changes in chemical manufacturing as natural gas liquids continue to expand their influence in the chemical manufacturing industry. A network model was used to analyze technology development and to evaluate trends in the industry based on material flows throughout supply chains. Agent-based modeling and simulation was used for analysis of individual chemical markets and to determine the viability of emerging markets. The network model was used to quantify how downstream chemical supply chains respond to changes in natural gas and natural gas liquid prices. The model was also used to identify new reaction pathways that may become viable as the industry evolves and how those new pathways will impact costs and utility consumption in the system of chemical manufacturing technologies. Using the Four Corners region as a case study, an analytic process was developed and implemented to evaluate greenfield manufacturing based on regional feedstock availability and global chemical markets. Conceptual development of a comprehensive model of the natural gas liquids industry was also completed to map the challenges in developing chemical manufacturing system models that will include the impacts of exports, midstream infrastructure, supply, and new chemical demand.
Advisors/Committee Members: Allen, David T. (advisor), Edgar, Thomas F (committee member), Baldea, Michael (committee member), Webber, Michael E (committee member), Olmstead, Sheila M (committee member).
Subjects/Keywords: Petrochemical; Network model; Agent-based model; Life cycle assessment
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
DeRosa, S. E. (2016). Impact of natural gas and natural gas liquids on chemical manufacturing in the United States. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/39644
Chicago Manual of Style (16th Edition):
DeRosa, Sean Edward. “Impact of natural gas and natural gas liquids on chemical manufacturing in the United States.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/39644.
MLA Handbook (7th Edition):
DeRosa, Sean Edward. “Impact of natural gas and natural gas liquids on chemical manufacturing in the United States.” 2016. Web. 19 Jan 2021.
Vancouver:
DeRosa SE. Impact of natural gas and natural gas liquids on chemical manufacturing in the United States. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/39644.
Council of Science Editors:
DeRosa SE. Impact of natural gas and natural gas liquids on chemical manufacturing in the United States. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/39644
16.
-0693-3990.
The benefits and challenges of renewables on the electric grid and opportunities for systems integration and demand side management.
Degree: PhD, Mechanical Engineering, 2018, University of Texas – Austin
URL: http://hdl.handle.net/2152/67639
► Environmental policies, reduced manufacturing costs, and technology improvements have all contributed to the growing installation of wind turbines and solar photovoltaic arrays in the electric…
(more)
▼ Environmental policies, reduced manufacturing costs, and technology improvements have all contributed to the growing installation of wind turbines and solar photovoltaic arrays in the electric grid. While these new sources of renewable electrical power provide environmental and economic benefits to the electric grid, they also complicate the balancing of supply and demand required to reliably operate the grid. The seasonal, daily, and sub-hourly fluctuations in the energy output of wind and solar generators must be compensated by operating the existing power plant fleet more flexibly or by providing more flexible sources of electricity demand. This dissertation categorizes and quantifies this compensation by studying the "flexibility requirements'' imposed by wind and solar generation, approximates the economically optimal capacities of regional wind and solar resources in the grid, and explores the ability of a central utility plant to add a flexible source of demand to the electric grid system. These topics are covered in the four chapters described below. Chapter 3 utilizes a unit commitment and dispatch (UC&D) model to simulate large solar generation assets with different geographic locations and orientations. The simulations show the sensitivity of the wholesale energy price, reserve market prices, total dispatch cost, fuel mix, emissions, and water use to changes in net load flexibility requirements. The results show that generating 22,500 GWh of solar energy in a 2011 simulation of the Electric Reliability Council of
Texas (ERCOT) reduces total dispatch cost by approximately 900 Million (a 10.3% decrease) while increasing ancillary services costs by approximately 10 Million (a 3% increase). The results also show that solar PV reduces water consumption, water withdrawals, and CO₂, NO [subscript x], and SO [subscript x] emissions. Installing sufficient solar panel capacity to generate that much electricity also reduces peak load by 4% but increases net load volatility by 40 – 79% and ramping by 11 – 33%. In addition, west-located, west-oriented solar resources reduce total dispatch cost more than the other simulated solar scenarios. The west-located, west-oriented solar simulation required greater system flexibility, but utilized more low-cost generators and fewer high-cost generators for energy production than other simulated scenarios. These results suggest that the mix of energy provided by different generation technologies influences the dispatch cost more than the net load flexibility requirements. Chapter 4 develops a quantitative framework for calculating flexibility requirements and performs a statistical analysis of load, wind, and solar data from the Electric Reliability Council of
Texas (ERCOT) to show how wind and solar capacity impacts these grid flexibility requirements. Growing wind capacity shows only minor correlation with increasing flexibility requirements, but shows some correlation with ramp down rates and daily volatility in the net load. Growing solar capacity shows a direct correlation…
Advisors/Committee Members: Webber, Michael E., 1971- (advisor), (advisor), Baldick, Ross (committee member), Hebner, Robert E (committee member), Leibowicz, Benjamin D (committee member).
Subjects/Keywords: Grid modeling; Renewable energy integration; Demand-side flexibility
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APA ·
Chicago ·
MLA ·
Vancouver ·
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APA (6th Edition):
-0693-3990. (2018). The benefits and challenges of renewables on the electric grid and opportunities for systems integration and demand side management. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/67639
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-0693-3990. “The benefits and challenges of renewables on the electric grid and opportunities for systems integration and demand side management.” 2018. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/67639.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-0693-3990. “The benefits and challenges of renewables on the electric grid and opportunities for systems integration and demand side management.” 2018. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-0693-3990. The benefits and challenges of renewables on the electric grid and opportunities for systems integration and demand side management. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2018. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/67639.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-0693-3990. The benefits and challenges of renewables on the electric grid and opportunities for systems integration and demand side management. [Doctoral Dissertation]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/67639
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
17.
-8778-6733.
Deliver me from waste : impacts of e-commerce on food supply chain energy use.
Degree: PhD, Civil Engineering, 2019, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/3406
► An increasing portion of food is purchased online through e-commerce services such as meal-kit and grocery delivery. As these services change the way food is…
(more)
▼ An increasing portion of food is purchased online through e-commerce services such as meal-kit and grocery delivery. As these services change the way food is purchased and distributed, they also impact how energy is used along the food supply chain. Impacts will differ based on type of service, location, and consumer habits. In particular, meal-kit and grocery delivery services might impact consumer food waste, packaging waste, and energy consumption for transportation related to deliveries. This research attempts to assess the potential impact of food delivery services to energy use along the entire food supply chain, accounting for food loss and waste. An analytical model was developed to compare the energy requirements of meal-kit delivery systems to conventional grocery shopping. Meal-kit services can reduce food waste because the kits pre-portion ingredients for each recipe, thereby saving energy. However, the supply chain and packaging requirements of meal-kit delivery are different than for grocery stores, potentially offsetting any reduction of food waste. Furthermore, if meal-kit delivery replaces some trips to the grocery store, then transportation-related savings might be significant. Mass and energy balances were used to assess embedded energy in both pathways. The model was illustrated under representative operating conditions for a consumer in
Austin,
Texas using Monte Carlo simulation. Both per-meal and per-week, a meal-kit delivery service meal is more energy intensive than procuring the same meal from conventional grocery stores primarily due to single-use packaging. Consumer transportation to the grocery store was also found to be particularly energy intensive. Results also indicated that there might be a greater potential to reduce energy use when consumers live further from a grocery store. A second analytical model was developed to compare the energy requirements of grocery delivery services to grocery shopping. Two types of grocery delivery services were considered: decentralized (store-centric) and centralized (warehouse-centric). The supply chains for both store- and warehouse-centric grocery delivery services also differ from conventional grocery shopping, and might offset changes in food waste. Store-centric grocery delivery services primarily affect last-mile transportation by replacing a personal trip with a delivery, though they might be able to reduce energy by bundling multiple orders together in one trip. Warehouse-centric grocery delivery services might have a greater impact on energy use because they set up their own separate supply chain with primary fulfillment centers and delivery vehicles. Mass and energy balances were used to assess embedded energy per-week in both pathways. The model was illustrated under two consumer case studies using Monte Carlo simulation. In both cases, the warehouse-centric grocery delivery service was the least energy intensive. The store-centric grocery delivery service showed slight energy savings. Results suggest that consumer transportation and…
Advisors/Committee Members: Webber, Michael E., 1971- (advisor), Apte, Joshua (committee member), Lieberknecht, Katherine (committee member), Allen, David (committee member), Faust, Kasey (committee member).
Subjects/Keywords: Meal-kit; Grocery; Delivery; Energy; E-commerce; Last-mile; Packaging; Food
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-8778-6733. (2019). Deliver me from waste : impacts of e-commerce on food supply chain energy use. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/3406
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-8778-6733. “Deliver me from waste : impacts of e-commerce on food supply chain energy use.” 2019. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://dx.doi.org/10.26153/tsw/3406.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-8778-6733. “Deliver me from waste : impacts of e-commerce on food supply chain energy use.” 2019. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-8778-6733. Deliver me from waste : impacts of e-commerce on food supply chain energy use. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2019. [cited 2021 Jan 19].
Available from: http://dx.doi.org/10.26153/tsw/3406.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-8778-6733. Deliver me from waste : impacts of e-commerce on food supply chain energy use. [Doctoral Dissertation]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/3406
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
18.
Zavala Araiza, Daniel.
Atmospheric emissions and air quality impacts of natural gas production from shale formations.
Degree: PhD, Chemical Engineering, 2014, University of Texas – Austin
URL: http://hdl.handle.net/2152/31301
► Natural gas is at the core of the energy supply and security debates; new extraction technologies, such as horizontal drilling and hydraulic fracturing, have expanded…
(more)
▼ Natural gas is at the core of the energy supply and security debates; new extraction technologies, such as horizontal drilling and hydraulic fracturing, have expanded natural gas production. As with any energy system, however, natural gas has an environmental footprint and this thesis examines the air quality impacts of natural gas production. Greenhouse gas (GHG), criteria pollutant, and toxic emissions from natural gas production have been subject to a great amount of uncertainty, largely due to limited measurements of emission rates from key sources. This thesis reports direct and indirect measurements of emissions, assessing the spatial and temporal distributions of emissions, as well as the role of very high emitting wells and high emitting sources in determining national emissions. Direct measurements are used to identify, characterize and classify the most important sources of continuous and episodic emissions, and to analyze mitigation opportunities. Methods are proposed and demonstrated for reconciling these direct measurements of emissions from sources with measurements of ambient concentrations. Collectively, the direct source measurements, and analyses of ambient air pollutant measurements in natural gas production regions reported in this work improve the estimation, characterization, and methods for monitoring air quality implications of shale gas production.
Advisors/Committee Members: Allen, David T. (advisor), Webber, Michael (committee member), McDonald-Buller, Elena (committee member), Hildebrandt Ruiz, Lea (committee member), Edgar, Thomas (committee member).
Subjects/Keywords: Energy; Climate change; GHG; Natural gas; Hydraulic fracturing
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zavala Araiza, D. (2014). Atmospheric emissions and air quality impacts of natural gas production from shale formations. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/31301
Chicago Manual of Style (16th Edition):
Zavala Araiza, Daniel. “Atmospheric emissions and air quality impacts of natural gas production from shale formations.” 2014. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/31301.
MLA Handbook (7th Edition):
Zavala Araiza, Daniel. “Atmospheric emissions and air quality impacts of natural gas production from shale formations.” 2014. Web. 19 Jan 2021.
Vancouver:
Zavala Araiza D. Atmospheric emissions and air quality impacts of natural gas production from shale formations. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/31301.
Council of Science Editors:
Zavala Araiza D. Atmospheric emissions and air quality impacts of natural gas production from shale formations. [Doctoral Dissertation]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/31301

University of Texas – Austin
19.
Glazer, Yael Rebecca.
A techno-economic framework for mitigating environmental liabilities from unconventional oil and gas operations in the United States.
Degree: PhD, Civil Engineering, 2018, University of Texas – Austin
URL: http://hdl.handle.net/2152/71425
► Unconventional oil and gas (O&G) activity is associated with many environmental liabilities including 1) high water use, 2) substantial volumes of generated wastewater, and 3)…
(more)
▼ Unconventional oil and gas (O&G) activity is associated with many environmental liabilities including 1) high water use, 2) substantial volumes of generated wastewater, and 3) flaring of co-produced natural gas. The work in this dissertation aims to holistically examine and find strategies to mitigate these environmental challenges through three studies:
1. Designing a method to select the most appropriate wastewater treatment technology or product based on numerous metrics and across many potential options.
2. Conducting an inventory and engineering assessment of the flared gas and wastewater.
3. Building a decision tree model to investigate and compare the economic feasibility of several potential traditional and nontraditional produced water management pathways, including treatment, disposal, discharge, and crop production.
Based on the results of these analyses, the following general conclusions are drawn:
The first study shows, through the tremendous number of technologies and products that claim to handle wastewater associated with O&G activities, mechanical vapor recompression, and to a lesser extent, reverse osmosis are the top contenders when treating to freshwater standards is desired. In the process, a down-selection tool that can be tailored to an operator’s specific requirements and a database containing many of the available technologies and products were created.
The second study shows that from the seven prominent shale regions included in this analysis, Marcellus/Utica (in the Northeast), Bakken (North Dakota), and Niobrara (Rocky Mountains) flared between 2 and 48 times the amount of natural gas needed to provide energy for treatment of their wastewater volumes. The Permian Basin, Eagle Ford, and Haynesville did not have sufficient flared gas to treat wastewater produced in each respective region. As such, these regions would require additional energy sources for wastewater treatment.
The third study shows that several nontraditional produced water management pathways might be economically feasible depending on the realized 1) price for the commodities produced and 2) cost associated with implementing the strategy. In this case, the traditional pathway to minimally treat and discharge to a nearby stream had the highest expected value by a slim margin over growing switchgrass onsite. This result suggests that further investigation should be considered to determine, with greater certainty, the attainable price for switchgrass.
These general conclusions, along with further details, provide insight into the challenges and mitigation strategies with some of the environmental liabilities associated with unconventional O&G activity. As onsite resources (e.g., available water) become more constrained and regulations become more stringent (e.g., curtailment of flaring), implementing these or similar approaches to the industry’s waste streams will become increasingly imperative.
Advisors/Committee Members: Webber, Michael E., 1971- (advisor), Lawler, Desmond F (committee member), Werth, Charles J (committee member), Passalacqua, Paola (committee member), Kreitler, Charles (committee member).
Subjects/Keywords: Hydraulic fracturing; Water; Wastewater; Produced water; Unconventional oil and gas; Flared gas; Environmental liabilities
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Glazer, Y. R. (2018). A techno-economic framework for mitigating environmental liabilities from unconventional oil and gas operations in the United States. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/71425
Chicago Manual of Style (16th Edition):
Glazer, Yael Rebecca. “A techno-economic framework for mitigating environmental liabilities from unconventional oil and gas operations in the United States.” 2018. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/71425.
MLA Handbook (7th Edition):
Glazer, Yael Rebecca. “A techno-economic framework for mitigating environmental liabilities from unconventional oil and gas operations in the United States.” 2018. Web. 19 Jan 2021.
Vancouver:
Glazer YR. A techno-economic framework for mitigating environmental liabilities from unconventional oil and gas operations in the United States. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2018. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/71425.
Council of Science Editors:
Glazer YR. A techno-economic framework for mitigating environmental liabilities from unconventional oil and gas operations in the United States. [Doctoral Dissertation]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/71425

University of Texas – Austin
20.
-1323-0046.
Opportunities for urban water systems to deliver demand-side benefits to the electric grid.
Degree: PhD, Mechanical Engineering, 2018, University of Texas – Austin
URL: http://hdl.handle.net/2152/68069
► The U.S. electricity grid's ongoing transformation to integrate renewable or distributed generation, address aging infrastructure, and improve grid resilience and reliability all motivate increasing the…
(more)
▼ The U.S. electricity grid's ongoing transformation to integrate renewable or distributed generation, address aging infrastructure, and improve grid resilience and reliability all motivate increasing the base of available demand-side resources that offer services to the grid. Water systems have several characteristics relevant to increasing the amount of demand-side services provided to the electric grid, including unique physical and chemical properties, location within urban areas, inextricable linkages between energy and water use, and untapped potential in the space. This research addresses opportunities to provide two types of demand-side service from within the water sector: load management and energy efficiency.
Improved pump scheduling at municipal pump stations was explored in a case study to quantify the influence of electric rate design on the amount of load management that water utilities can affordably provide. The analysis found significant potential for electric and water utilities to cooperate on rate design and load scheduling, and that rate structure is a key enabler of mutually beneficial arrangements.
Environmental and economic impacts of community-scale water recycling were addressed through the formulation of an optimal capacity and dispatch model. The model was demonstrated in a case study, which found that the community-scale system can be economically feasible in certain areas and might significantly decrease reliance on central water utilities, but that relying on grid electricity will significantly increase demand and associated emissions. The results motivate exploration of community-scale systems within microgrids with increased availability of renewable energy.
In the residential sector, very high sampling rate data is used to develop machine learning classifiers to categorize end use water events by appliance type. Classifier performance is shown to improve with the addition of coincident electricity data and dedicated sub-meter data. Results from this work have potential to improve customer awareness of water use and facilitate adoption of efficient appliances or conservation behaviors. This work is extended via a spatio-economic analysis of cost effectiveness for residential water-related appliance retrofits. The analysis unites novel data sets to create an interactive online tool that allows users to evaluate energy savings and avoided emissions based on heterogenous usage, behavioral parameters, and geographic factors.
Together, this body of research identifies promising opportunities for new technology, operational strategies, and policies within the water sector to support ongoing transformation towards a cleaner, responsive, and resilient electric grid.
Advisors/Committee Members: Webber, Michael E., 1971- (advisor), Leibowicz, Benjamin D. (committee member), Rai, Varun (committee member), Nagy, Zoltan (committee member).
Subjects/Keywords: Energy and water nexus; Urban water systems; Load management; Energy efficiency; Pump scheduling; Load shifting; Water recycling; Distributed water infrastructure; Water end-use disaggregation; Spatio-economic analysis; Appliance retrofit; Abatement costs
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-1323-0046. (2018). Opportunities for urban water systems to deliver demand-side benefits to the electric grid. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/68069
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-1323-0046. “Opportunities for urban water systems to deliver demand-side benefits to the electric grid.” 2018. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/68069.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-1323-0046. “Opportunities for urban water systems to deliver demand-side benefits to the electric grid.” 2018. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-1323-0046. Opportunities for urban water systems to deliver demand-side benefits to the electric grid. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2018. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/68069.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-1323-0046. Opportunities for urban water systems to deliver demand-side benefits to the electric grid. [Doctoral Dissertation]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/68069
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
21.
Rhodes, Joshua Daniel.
Optimal residential energy consumption, prediction, and analysis.
Degree: PhD, Civil Engineering, 2014, University of Texas – Austin
URL: http://hdl.handle.net/2152/33342
► In the United States, buildings are responsible for 40.36 Quads (40.36 x 10¹⁵ BTU) of total primary energy consumption per year, 22.15 of which are…
(more)
▼ In the United States, buildings are responsible for 40.36 Quads (40.36 x 10¹⁵ BTU) of total primary energy consumption per year, 22.15 of which are used in residential buildings (reference year 2010). Also, the United States residential sector is responsible for about 20% of United States carbon emissions or about 4% of the world's total. While there are over 130 million residential units in the United States, only 0.1% of R&D is spent in the residential sector. This means the residential sector represents an underinvested opportunity for energy savings. Tackling that problem, this dissertation presents work that is focused on assessing, analyzing, and optimizing how residential buildings use and generate energy. This work presents an analysis of a unique dataset of 4971 energy audits performed on homes in
Austin,
Texas in 2009 - 2010. The analysis quantifies the prevalence of typical air-conditioner design and installation issues such as low efficiency, oversizing, duct leakage, and low measured capacity, then estimates the impacts that resolving these issues would have on peak power demand and cooling energy consumption. It is estimated that air-conditioner use in single-family residences currently accounts for 17 - 18% of peak demand in
Austin, and that improving equipment efficiency alone could save up to 205 MW, or 8%, of peak demand. It was also found that 31% of systems in this study were oversized, leading to up to 41 MW of excess peak demand. Replacing oversized systems with correctly sized higher efficiency units has the potential for further savings of up to 81 MW. Also, the mean system could achieve 18% and 20% in cooling energy savings by sealing duct leaks and servicing air-conditioning units to achieve 100% of nominal capacity, respectively. A different dataset of measured whole-home electricity consumption from 103 homes in
Austin, TX was analyzed to 1) determine the shape of seasonally-resolved residential demand profiles, 2) determine the optimal number of normalized representative residential electricity use profiles within each season, and 3) draw correlations to the different profiles based on survey data from the occupants of the 103 homes. Within each season, homes with similar hourly electricity use patterns were clustered into groups using the k-means clustering algorithm. The number of groups within each season was determined by comparing 30 different optimal clustering criteria. Then probit regression was performed to determine if homeowner survey responses could serve as explanatory variables for the clustering results. This analysis found that
Austin homes typically fall into one of two seasonal groups. Because these groups differ in temporal energy use and the wholesale electricity price is temporal, homes in one group use more expensive electricity than others. The probit regression results indicated that variables such as whether or not someone worked from home, the number of hours of television watched per week, and level of education have significant correlation with average profile…
Advisors/Committee Members: Webber, Michael E., 1971- (advisor), Blackhurst, Michael F (committee member), Edgar, Thomas F (committee member), King, Carey (committee member), Novoselac, Atila (committee member).
Subjects/Keywords: Residential energy use; Peak energy use; HVAC; Temporal energy use
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rhodes, J. D. (2014). Optimal residential energy consumption, prediction, and analysis. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/33342
Chicago Manual of Style (16th Edition):
Rhodes, Joshua Daniel. “Optimal residential energy consumption, prediction, and analysis.” 2014. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/33342.
MLA Handbook (7th Edition):
Rhodes, Joshua Daniel. “Optimal residential energy consumption, prediction, and analysis.” 2014. Web. 19 Jan 2021.
Vancouver:
Rhodes JD. Optimal residential energy consumption, prediction, and analysis. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/33342.
Council of Science Editors:
Rhodes JD. Optimal residential energy consumption, prediction, and analysis. [Doctoral Dissertation]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/33342

University of Texas – Austin
22.
-5473-5000.
Peak load reduction and water savings potential of integrated thermal energy and auxiliary water storage systems for residential buildings in Austin, Texas.
Degree: PhD, Mechanical engineering, 2016, University of Texas – Austin
URL: http://hdl.handle.net/2152/39739
► Long-term climatic shift is projected to lead to a hotter and dryer Texas. At the same time, the population is expected to grow by approximately…
(more)
▼ Long-term climatic shift is projected to lead to a hotter and dryer
Texas. At the same time, the population is expected to grow by approximately 80% over the next 50 years. Both of these trends will increase demand for both water and electricity for air conditioning. As a result, cities and consumers are looking for ways to reduce stress on local water supplies, and reduce on-peak electricity consumption. Utilizing auxiliary water sources such as rainwater, graywater, and air conditioner condensate could be a way to reduce consumption from municipal water supplies, and thermal storage is on viable method to significantly reduce on-peak electricity demand from cooling systems. This research is aimed at reducing municipally-supplied water consumption and on-peak electricity load using integrated thermal energy and auxiliary water storage systems, referred to herein as `ITHERST' systems. This dissertation describes the design and operation of these systems, and develops semi-empirical thermodynamic, heat transfer, and fluid flow system operation models to estimate peak load reduction and municipal water savings from residential ITHERST systems. Two system configurations are discussed: the first scenario (referred to as ITHERST-DX) uses condenser-side thermal storage for a typical residential house with a direct expansion air conditioning system, and auxiliary water collection for reducing irrigation water consumption; the second scenario (referred to as the ITHERST-Hydro) uses indirect chilled water thermal storage in a hydronic cooling system, and a potable rainwater collection system to reduce household water consumption, as part of a prototype next-generation sustainable house. Analysis of the ITHERST-DX thermal storage system, showed average peak load reductions on the order of 40%, and average energy consumption increased by approximately 5-10+% over the base case depending on tank size and weather data input. Irrigation water savings from the ITHERST-DX system were approximately 20-90% depending on auxiliary water storage volume. Similarly, the ITHERST-Hydro analysis showed peak load reductions on the order of 75%, energy consumption increased by approximately 7-9%, and household water savings on the order of 60-90%. Lastly, net annual utility bill savings were calculated by incorporating electricity and water billing logic and pricing information into the two ITHERST system models. Annual savings were on the order of approximately 500-1000 per year for the ITHERST-DX system, and 200-500 per year for the ITHERST-Hydro system, depending on the weather year and specified utility rates. The biggest savings were from water and wastewater, since both systems substantially reduced water demand at larger volumes. Electric bill savings from thermal storage were only substantial when the on-peak price of electricity was very high, and the off-peak price was comparatively low. This economic analysis suggests these systems could have economic value to the homeowner, but savings are highly rate-dependent. …
Advisors/Committee Members: Webber, Michael E., 1971- (advisor), Crawford, Richard (committee member), Nichols, Steven (committee member), Novoselac, Atila (committee member), Liedl, Petra (committee member).
Subjects/Keywords: Residential; Air conditioning; Thermal storage; Rainwater harvesting; Graywater reuse
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-5473-5000. (2016). Peak load reduction and water savings potential of integrated thermal energy and auxiliary water storage systems for residential buildings in Austin, Texas. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/39739
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-5473-5000. “Peak load reduction and water savings potential of integrated thermal energy and auxiliary water storage systems for residential buildings in Austin, Texas.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/39739.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-5473-5000. “Peak load reduction and water savings potential of integrated thermal energy and auxiliary water storage systems for residential buildings in Austin, Texas.” 2016. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-5473-5000. Peak load reduction and water savings potential of integrated thermal energy and auxiliary water storage systems for residential buildings in Austin, Texas. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/39739.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-5473-5000. Peak load reduction and water savings potential of integrated thermal energy and auxiliary water storage systems for residential buildings in Austin, Texas. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/39739
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
23.
Stoll, Brady Leigh.
Coupling photovoltaics and grid-scale energy storage : performance and sitability.
Degree: PhD, Mechanical Engineering, 2015, University of Texas – Austin
URL: http://hdl.handle.net/2152/46558
► The Fifth Assessment of the International Panel on Climate Change has called for a four fold increase in the use of low-carbon sources of electricity…
(more)
▼ The Fifth Assessment of the International Panel on Climate Change has called for a four fold increase in the use of low-carbon sources of electricity to help stabilize climate change by mid century. Many people look to solar power systems to help reduce carbon intensity, but cost and variability have been significant obstacles to their widespread deployment. However, the cost of photovoltaics has dropped significantly in recent years, and grid-scale energy storage technologies are available to allow for production of dispatchable electricity from photovoltaics. In particular, compressed-air energy storage is both low-cost and can be built in a wide variety of geologies as well as above ground. I show that coupling large-scale photovoltaic arrays and grid-scale storage allows for dispatchable electricity production at costs that are comparable to other low carbon electricity sources. I examine four load curves: base-load generation, on-peak generation, and averaged load curves for the Electric Reliability Council of
Texas (ERCOT) and PJM Independent System Operators. I found that on-peak and ERCOT loads typically required the lowest amount of storage, up to 2000 MWh [subscript e] less than that for base-load generation. However, in some regions, and for some storage amounts, baseload output actually provided the lowest cost of electricity. I also show that such coupled systems could provide base-load electricity for ≤ 0.08/kWh [subscript e] on more than 40% of global land surface, with a capacity factor equivalent to that of the US nuclear fleet. Importantly, this is below the projected cost of electricity from new nuclear power systems. While cost is a major factor, also of importance is where systems of photovoltaics and grid-scale storage would provide the most benefit. Locations expected to provide energy at the lowest cost do not necessarily correspond to load and population centers, where the electricity is most needed. I use multi-criteria decision analysis techniques to perform a global study of the optimal locations for siting these coupled systems to maximize their social benefit. I found that the most ideal locations are generally located in Africa, Iraq, and southeast Asia, as these locations have both high irradiance levels as well as expanding populations and low grid connectivity.
Advisors/Committee Members: Deinert, Mark (advisor), Baldick, Ross (committee member), Edgar, Thomas (committee member), Howell, John (committee member), Shi, Li (committee member), Webber, Michael (committee member).
Subjects/Keywords: Photovoltaics; Energy storage; Solar power; Irradiance; Renewable energy
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Stoll, B. L. (2015). Coupling photovoltaics and grid-scale energy storage : performance and sitability. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/46558
Chicago Manual of Style (16th Edition):
Stoll, Brady Leigh. “Coupling photovoltaics and grid-scale energy storage : performance and sitability.” 2015. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/46558.
MLA Handbook (7th Edition):
Stoll, Brady Leigh. “Coupling photovoltaics and grid-scale energy storage : performance and sitability.” 2015. Web. 19 Jan 2021.
Vancouver:
Stoll BL. Coupling photovoltaics and grid-scale energy storage : performance and sitability. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2015. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/46558.
Council of Science Editors:
Stoll BL. Coupling photovoltaics and grid-scale energy storage : performance and sitability. [Doctoral Dissertation]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/46558

University of Texas – Austin
24.
Wirsching, Andrea Christina.
Oil and gas in the great state of Tejas : centering land tenure histories of fracking geographies within the Texas-Mexico border landscape.
Degree: PhD, Community and Regional Planning, 2020, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/10086
► This dissertation examines the Texas-Mexico border oil and gas landscape and the unequitable distributions of impacts and benefits these extractive activities produce. I situate my…
(more)
▼ This dissertation examines the
Texas-Mexico border oil and gas landscape and the unequitable distributions of impacts and benefits these extractive activities produce. I situate my work within critical, interdisciplinary literature on the relationship between the exploitation of natural resources and wealth distribution, and the explicit problematization of inherent uniqueness of border spaces. I utilized a critical, multi-disciplinary framework drawing from political ecology, planning, and border studies, to critique and inform more nuanced vulnerability assessments and literatures across temporal and spatial scales. I argue consideration of the role of who owns what and how they obtained it in policy and planning, not just land use, is key to understanding the reproduction of oppressive and exclusive political structures and land rights regimes along the border. Using a mixed method approach to examine this exemplary case study, I integrated spatial, quantitative methods with qualitative interviews and archival document analysis to trace the historical land tenure patterns of property ownership in Webb County, as well as conduct vulnerability and risk assessments. Using governance geographies as a spatial and conceptual lens for analyses, I demonstrate how land tenure and ownership illuminate the important role of the gradations of informality, and by extension the state, is in producing social vulnerabilities in borderlands. The following themes emerged from analysis of my case study: relationship between land wealth and political power and vulnerability; tensions between land control, stewardship, and exploitation; and the value in learning from histories of land tenure and borderlands in reconceptualizing, identifying, and developing policies that aim to address vulnerability. My research suggests the confluence of physical and regulatory remnants of past colonial powers along the border region continue to be visible and influence the balance and power and distribution of public resources. Furthermore, their corresponding land rights regimes, dispossession via subsequent sovereign land grants, and generational wealth accumulation and political power from these activities, are significant in shaping this particular oil and gas producing landscape. As one of the least regulated, pro-property rights and pro-oil-and-gas states in the country, this study serves as an example of what happens when wealth and political power continues to fortify the structural mechanisms that, in the absence of regulatory controls and avenues for redistribution and remediation, effectively rendering moot a government meant to serve and protect everyone else.
Advisors/Committee Members: Sletto, Bjørn (advisor), Mueller, Elizabeth (committee member), Paterson, Robert (committee member), Guidotti-Hernández, Nicole (committee member), Webber, Michael (committee member).
Subjects/Keywords: Land tenure; Eagle Ford Shale; Fracking; Texas; Environmental justice
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wirsching, A. C. (2020). Oil and gas in the great state of Tejas : centering land tenure histories of fracking geographies within the Texas-Mexico border landscape. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/10086
Chicago Manual of Style (16th Edition):
Wirsching, Andrea Christina. “Oil and gas in the great state of Tejas : centering land tenure histories of fracking geographies within the Texas-Mexico border landscape.” 2020. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://dx.doi.org/10.26153/tsw/10086.
MLA Handbook (7th Edition):
Wirsching, Andrea Christina. “Oil and gas in the great state of Tejas : centering land tenure histories of fracking geographies within the Texas-Mexico border landscape.” 2020. Web. 19 Jan 2021.
Vancouver:
Wirsching AC. Oil and gas in the great state of Tejas : centering land tenure histories of fracking geographies within the Texas-Mexico border landscape. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2020. [cited 2021 Jan 19].
Available from: http://dx.doi.org/10.26153/tsw/10086.
Council of Science Editors:
Wirsching AC. Oil and gas in the great state of Tejas : centering land tenure histories of fracking geographies within the Texas-Mexico border landscape. [Doctoral Dissertation]. University of Texas – Austin; 2020. Available from: http://dx.doi.org/10.26153/tsw/10086

University of Texas – Austin
25.
-7892-5500.
Variable incidence angle film cooling experiments on a scaled up turbine airfoil model.
Degree: PhD, Mechanical Engineering, 2016, University of Texas – Austin
URL: http://hdl.handle.net/2152/68221
► This study focused on three main areas of research - the development of a new type of low-speed, closed-loop wind tunnel design to test at…
(more)
▼ This study focused on three main areas of research - the development of a new type of low-speed, closed-loop wind tunnel design to test at varying incidence angles, the investigation of film cooling for gas turbine components at varying incidence angles, and the analysis of the heat transfer and flow field predictive capability of RANS models. In order to develop the closed loop wind tunnel, a rigorous design and validation process was followed. This validated design is unique for low-speed closed-loop facilities. The development of this wind tunnel enabled measurements of adiabatic and overall effectiveness of two highly realistic airfoil models with shaped holes at varying incidence angles. This was accomplished through application of the appropriate aerodynamic and heat transfer scaling parameters for all measurements. Among other results, it was found that the shaped holes at the stagnation row of holes significantly enhanced film cooling effectiveness in the high curvature region of the showerhead depending on the incidence angle tested, and that the incidence angle effect persisted on the matched Biot number model. No previous studies had experimentally investigated the effects of incidence angle effects on overall effectiveness of a full-coverage airfoil. Furthermore, no previous studies had investigated the effect of shaped holes in the showerhead region of a realistic airfoil model such as the one used in this study. Finally, the computational predictive capability of various RANS turbulence models were analyzed by predicting the heat transfer coefficient of the model as well as the turbulence production and turning angle of a vertical array of rods used to generate turbulence in the tunnel. It was found that the computational predictions of leading-edge heat transfer were under-predicted due to the shape of the model leading edge. It was also found that the SST-Transition model appropriately predicted downstream turbulence and turning angle of the vertical rod array when compared to experimental results and empirical correlations in the literature. This is the first study to experimentally and computationally investigate the turning angle of a vertical grid array over a range of zero and non-zero inlet flow angles.
Advisors/Committee Members: Bogard, David G. (advisor), Davidson, Frederick T (committee member), Kohli, Atul (committee member), Ezekoye, Ofodike A. (committee member), Webber, Michael E (committee member).
Subjects/Keywords: Film-cooling; Gas turbine; Low-speed; Wind tunnel; Heat transfer; Incidence angle; Facility design
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-7892-5500. (2016). Variable incidence angle film cooling experiments on a scaled up turbine airfoil model. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/68221
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-7892-5500. “Variable incidence angle film cooling experiments on a scaled up turbine airfoil model.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/68221.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-7892-5500. “Variable incidence angle film cooling experiments on a scaled up turbine airfoil model.” 2016. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-7892-5500. Variable incidence angle film cooling experiments on a scaled up turbine airfoil model. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/68221.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-7892-5500. Variable incidence angle film cooling experiments on a scaled up turbine airfoil model. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/68221
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
26.
-5734-0418.
Fire safety in sustainable buildings : status, options, alternatives.
Degree: PhD, Mechanical Engineering, 2017, University of Texas – Austin
URL: http://hdl.handle.net/2152/47453
► Sustainable design is a holistic goal of efficiency and optimization to reduce building energy consumption and environmental impact while improving occupant health and safety. Sustainable…
(more)
▼ Sustainable design is a holistic goal of efficiency and optimization to reduce building energy consumption and environmental impact while improving occupant health and safety. Sustainable building construction is one of the fastest growing industries in the United States. Changes in materials, products, designs, and methodologies are occurring to accommodate this green progression. While these changes have energy and environmental benefits, questions have been raised about the impacts on fire safety. As sustainability is rapidly adopted in the building construction industry, so too must our understanding of fire safety implications. It is possible that a single fire event can negate several, if not all, elements of green design. Intermingling green design and fire safety such that they reinforce rather than undermine each other would produce a net benefit to both humans and the environment. Without this consideration, green design could unintentionally increase fire risk and damage. To begin addressing some of these concerns, a three-pronged approach was taken in this research. First, a detailed qualitative examination of the relationship between fire safety and sustainability in buildings was conducted, including a discussion on the status of the fire and sustainability communities and recommendations on areas for development and implementation to promote fire safe sustainable designs. This first analysis concludes that exchange between the sustainability and fire safety communities is inadequate. The fire safety community is focused on quantifying and tracking such implications with a concern for firefighter security and training, while the sustainability community is focused on meeting the minimum building code requirements for fire protection. Second, a quantitative analysis on thermal insulation, an essential building material, was performed to demonstrate the current options available to designers and regulators and, more generally, how to integrate both fire safety and sustainability in material selection. A pointed result of this work is that rockwool, an insulation popular in Europe but rarely used in the United States, consistently ranked as a top performer. In the third component of this work, an investigation into the viability of two alternative, reportedly environmentally benign flame retardants (FRs) was conducted for use on flexible polyurethane foam (PU), a prevalent material in interior furnishings. Several previously unknown characteristics of these unique FRs were discovered through this work, including dissimilarities to a conventional halogenated FR treatment. In summary, this research elucidates the current status of the nexus of fire safety and sustainability, offers an immediate method of selecting preferable material options, and validates sustainable FR alternatives.
Advisors/Committee Members: Ezekoye, Ofodike A. (advisor), Webber, Michael E., 1971- (advisor), Ellison, Christopher J. (committee member), Ellzey, Janet L. (committee member).
Subjects/Keywords: Fire safety; Sustainability; Insulation; Green building; Optimization; Flame retardant; Polydopamine; Flexible polyurethane foam; Thermal degradation; Kinetic parameters
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-5734-0418. (2017). Fire safety in sustainable buildings : status, options, alternatives. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/47453
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-5734-0418. “Fire safety in sustainable buildings : status, options, alternatives.” 2017. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/47453.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-5734-0418. “Fire safety in sustainable buildings : status, options, alternatives.” 2017. Web. 19 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-5734-0418. Fire safety in sustainable buildings : status, options, alternatives. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2017. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/47453.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-5734-0418. Fire safety in sustainable buildings : status, options, alternatives. [Doctoral Dissertation]. University of Texas – Austin; 2017. Available from: http://hdl.handle.net/2152/47453
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
27.
Cetin, Kristen Sara.
Smart technology enabled residential building energy use and peak load reduction and their effects on occupant thermal comfort.
Degree: PhD, Civil Engineering, 2015, University of Texas – Austin
URL: http://hdl.handle.net/2152/30516
► Residential buildings in the United States are responsible for the consumption of 38% of electricity, and for much of the fluctuations in the power demands…
(more)
▼ Residential buildings in the United States are responsible for the consumption of 38% of electricity, and for much of the fluctuations in the power demands on the electric grid, particularly in hot climates. Residential buildings are also where occupants spend nearly 69% of their time. As “smart” technologies, including electric grid-connected devices and home energy management systems are increasingly available and installed in buildings, this research focuses on the use of these technologies combined with available energy use data in accomplishing three main objectives. The research aims to: (a) better understand how residential buildings currently use electricity, (b) evaluate the use of these smart technologies and data to reduce buildings’ electricity use and their contribution to peak loads, and (c) develop a methodology to assess the impacts of these operational changes on occupant thermal comfort. Specifically this study focuses on two of the most significant electricity consumers in residential buildings: large appliances, including refrigerators, clothes washers, clothes dryers and dishwashers, and heating, ventilation and air conditioning (HVAC) systems. First, to develop an improved understanding of current electricity use patterns of large appliances and residential HVAC systems, this research analyzes a large set of field-collected data. This dataset includes highly granular electricity consumption information for residential buildings located in a hot and humid climate. The results show that refrigerators have the most reliable and consistent use, while the three user-dependent appliances varied more greatly among houses and by time-of-day. In addition, the daily use patterns of appliances vary in shape depending on a number of factors, particularly whether or not the occupants work from home, which contrasts with common residential building energy modeling assumptions. For the all-air central HVAC systems studied, the average annual HVAC duty cycle was found to be approximately 20%, and varied significantly depending on the season, time of day, and type of residential building. Duty cycle was also correlated to monthly energy use. This information provides an improvement to previously assumed values in indoor air modeling studies. Overall, the work presented here enhances the knowledge of how the largest consumers of residential buildings, large appliances and HVAC, operate and use energy, and identifies influential factors that affect these use patterns. The methodologies developed can be applied to determine use patterns for other energy consuming devices and types of buildings, to further expand the body of knowledge in this area. Expanding on this knowledge of current energy use, smart large appliances and residential HVAC systems are investigated for use in reducing peak electric grid loads, and building energy use, respectively. This includes a combination of laboratory testing, field-collected data, and modeling. For appliance peak load reduction, refrigerators are found to have a good…
Advisors/Committee Members: Novoselac, Atila (advisor), Webber, Michael (committee member), Blackhurst, Michael (committee member), Tabares, Paulo (committee member), Manuel, Lance (committee member), Corsi, Richard (committee member).
Subjects/Keywords: Building energy efficiency; Smart buildings; Peak load reduction; Thermal comfort
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cetin, K. S. (2015). Smart technology enabled residential building energy use and peak load reduction and their effects on occupant thermal comfort. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/30516
Chicago Manual of Style (16th Edition):
Cetin, Kristen Sara. “Smart technology enabled residential building energy use and peak load reduction and their effects on occupant thermal comfort.” 2015. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/30516.
MLA Handbook (7th Edition):
Cetin, Kristen Sara. “Smart technology enabled residential building energy use and peak load reduction and their effects on occupant thermal comfort.” 2015. Web. 19 Jan 2021.
Vancouver:
Cetin KS. Smart technology enabled residential building energy use and peak load reduction and their effects on occupant thermal comfort. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2015. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/30516.
Council of Science Editors:
Cetin KS. Smart technology enabled residential building energy use and peak load reduction and their effects on occupant thermal comfort. [Doctoral Dissertation]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/30516

University of Texas – Austin
28.
Cohen, Stuart Michael, 1984-.
A techno-economic plant- and grid-level assessment of flexible CO2 capture.
Degree: PhD, Mechanical Engineering, 2012, University of Texas – Austin
URL: http://hdl.handle.net/2152/ETD-UT-2012-08-6150
► Carbon dioxide (CO₂) capture and sequestration (CCS) at fossil-fueled power plants is a critical technology for CO₂ emissions mitigation during the transition to a sustainable…
(more)
▼ Carbon dioxide (CO₂) capture and sequestration (CCS) at fossil-fueled power plants is a critical technology for CO₂ emissions mitigation during the transition to a sustainable energy system. Post-combustion amine scrubbing is a relatively mature CO₂ capture technology, but barriers to implementation include high capital costs and energy requirements that reduce net power output by 20-30%. Capture energy requirements are typically assumed constant, but work investigates whether flexibly operating amine scrubbing systems in response to electricity market conditions can add value to CO₂ capture facilities while maintaining environmental benefits. Two versatile optimization models have been created to study the electricity system implications of flexible CO₂ capture. One model assesses the value of flexible capture at a single facility in response to volatile electricity prices, while the other represents a full electricity system to study the ability of flexible capture to meet electricity demand and reliability (ancillary) service requirements. Price-responsive flexible CO₂ capture has limited value at market conditions that justify CO₂ capture investments. Solvent storage can add value for price arbitrage by allowing flexible operation without additional CO₂ emissions, but only with favorable capital costs. The primary advantage of flexible CO₂ capture is an increased ability to provide grid reliability services and improve grid resiliency at minimum and maximum electricity demand. Flexibility mitigates capacity shortages because capture energy requirements need not be replaced, and variable capture at low demand helps respond to intermittent renewable generation.
Advisors/Committee Members: Rochelle, Gary T. (advisor), Webber, Michael E., 1971- (advisor), Baldick, Ross (committee member), Schmidt, Philip S. (committee member), Bickel, Eric (committee member).
Subjects/Keywords: CO₂ capture; Flexibility; Electricity; Optimization; Unit commitment; Amine scrubbing; ERCOT
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cohen, Stuart Michael, 1. (2012). A techno-economic plant- and grid-level assessment of flexible CO2 capture. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2012-08-6150
Chicago Manual of Style (16th Edition):
Cohen, Stuart Michael, 1984-. “A techno-economic plant- and grid-level assessment of flexible CO2 capture.” 2012. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/ETD-UT-2012-08-6150.
MLA Handbook (7th Edition):
Cohen, Stuart Michael, 1984-. “A techno-economic plant- and grid-level assessment of flexible CO2 capture.” 2012. Web. 19 Jan 2021.
Vancouver:
Cohen, Stuart Michael 1. A techno-economic plant- and grid-level assessment of flexible CO2 capture. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2012. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/ETD-UT-2012-08-6150.
Council of Science Editors:
Cohen, Stuart Michael 1. A techno-economic plant- and grid-level assessment of flexible CO2 capture. [Doctoral Dissertation]. University of Texas – Austin; 2012. Available from: http://hdl.handle.net/2152/ETD-UT-2012-08-6150

University of Texas – Austin
29.
Zhang, Tong, active 2013.
Generation planning using Screening Curve Method.
Degree: PhD, Electrical and Computer Engineering, 2016, University of Texas – Austin
URL: http://hdl.handle.net/2152/68262
► The Screening Curve Method (SCM) is an intuitive and fast model that estimates the least-cost generation mix for generation planning purposes. As an approximation method,…
(more)
▼ The Screening Curve Method (SCM) is an intuitive and fast model that estimates the least-cost generation mix for generation planning purposes. As an approximation method, it calculates an optimized generation mix within a few seconds, but, in its original form, lacks many detailed considerations of the generation system. In order to improve SCM, many developments had been made in recent years. However, there were still some limitations to the SCM when compared to mathematical optimization models. Features like unit commitment, outage issues, ancillary services, and existing generation capacity were not considered in the SCM model. This dissertation proposes approaches targeted to solving these drawbacks. In addition, the basics of SCM and the cost definitions are discussed to prepare for the proposed new approaches. Finally, numerical calculations are performed on a real system case (ERCOT 2030) to illustrate the performance of the proposed models. We compare our simulation result with commercial software (PLEXOS) to demonstrate the effectiveness of the improved SCM.
Advisors/Committee Members: Baldick, Ross (advisor), Santoso, Surya (committee member), Ghosh, Joydeep (committee member), Hallock, Gary (committee member), Webber, Michael (committee member).
Subjects/Keywords: Generation planning; Screening Curve Method; Unit commitment; Economic dispatch; Ancillary services; Planned outage; Forced outage
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhang, Tong, a. 2. (2016). Generation planning using Screening Curve Method. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/68262
Chicago Manual of Style (16th Edition):
Zhang, Tong, active 2013. “Generation planning using Screening Curve Method.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://hdl.handle.net/2152/68262.
MLA Handbook (7th Edition):
Zhang, Tong, active 2013. “Generation planning using Screening Curve Method.” 2016. Web. 19 Jan 2021.
Vancouver:
Zhang, Tong a2. Generation planning using Screening Curve Method. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/2152/68262.
Council of Science Editors:
Zhang, Tong a2. Generation planning using Screening Curve Method. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/68262
30.
Cook, Margaret Allison.
A techno-economic and policy analysis of integrated, cross-sectoral water management and conservation.
Degree: PhD, Civil Engineering, 2018, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/1049
► Increasing demands on water resources from growing populations and industries coupled with periodic, yet severe, drought have revealed vulnerabilities in water supplies around the world.…
(more)
▼ Increasing demands on water resources from growing populations and industries coupled with periodic, yet severe, drought have revealed vulnerabilities in water supplies around the world. However, in some locations, partnerships between water rights holders (such as the agricultural sector) and those with water needs and available capital (such as the energy sector) could improve water efficiency. A market with cross-sectoral participation that creates incentives for reduction of fresh water consumption could improve water availability for many stakeholders. This work lays out the methodology of evaluating these hypotheses with an original water and cost model that is developed and demonstrated using three case studies in the Lower Rio Grande Basin, the Brazos River Basin, and the Permian Basin in
Texas with the intent that the findings would be generally applicable to other regions. This work uses an integrated, geographically resolved allocation model to evaluate water market participants and management strategies that could be implemented to encourage water demand reductions to supply new water users. Best practices are evaluated for increasing water availability through market mechanisms based on costs, benefits, and technological viability. The work closes with a discussion of regional variations to this integrated approach. Results of this analysis show that, in the Rio Grande Basin, up to 900 million gallons per year could be made available through 15% water conservation in irrigation areas. The water would supply approximately 30% of the annual hydraulic fracturing demand for 2016 and 2017 in the area. Reductions would also improve reliability for irrigators. In the Brazos Basin, results show that low-cost conservation scenarios could lead to savings of up to 4.1 billion gallons of water per year with mixed effects on reliability and resilience in the basin. The price paid for water used in oil and gas operations would not offset conservation strategies in every scenario, but agriculture and some municipal strategies are available. In the Permian Basin in West
Texas, results show that a market heavily reliant on centrally treated flowback and produced water would reduce water management costs and offset approximately 9 billion gallons of fresh water consumption annually. These transactions show that water could be provided without increasing total supplies through the combination of consumptive water conservation strategies and market mechanisms. Third party effects and transaction costs need to be fully evaluated, though. Moreover, spurring these saved water transactions might require incentives at the regional or state level.
Advisors/Committee Members: Webber, Michael E., 1971- (advisor), Lawler, Desmond (committee member), McKinney, Daene (committee member), Olmstead, Sheila (committee member), Passalacqua, Paola (committee member).
Subjects/Keywords: Water planning and management; Water markets; Water policy; Irrigation water management; Oil and gas water management; Water conservation; Water recycling; Produced water
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APA (6th Edition):
Cook, M. A. (2018). A techno-economic and policy analysis of integrated, cross-sectoral water management and conservation. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/1049
Chicago Manual of Style (16th Edition):
Cook, Margaret Allison. “A techno-economic and policy analysis of integrated, cross-sectoral water management and conservation.” 2018. Doctoral Dissertation, University of Texas – Austin. Accessed January 19, 2021.
http://dx.doi.org/10.26153/tsw/1049.
MLA Handbook (7th Edition):
Cook, Margaret Allison. “A techno-economic and policy analysis of integrated, cross-sectoral water management and conservation.” 2018. Web. 19 Jan 2021.
Vancouver:
Cook MA. A techno-economic and policy analysis of integrated, cross-sectoral water management and conservation. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2018. [cited 2021 Jan 19].
Available from: http://dx.doi.org/10.26153/tsw/1049.
Council of Science Editors:
Cook MA. A techno-economic and policy analysis of integrated, cross-sectoral water management and conservation. [Doctoral Dissertation]. University of Texas – Austin; 2018. Available from: http://dx.doi.org/10.26153/tsw/1049
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