You searched for +publisher:"University of Colorado" +contributor:("Michael J. Brandemuehl").
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University of Colorado
1.
Hubler, Darrell J.
Regeneration of Liquid Desiccants in Evacuated Tube Solar Collectors.
Degree: MS, 2014, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/434 
► Liquid desiccants can be regenerated by heating the solution to evaporate water from the solution. While conventional methods rely on the vapor pressure difference…
(more)
▼ Liquid desiccants can be regenerated by heating the solution to evaporate water from the solution. While conventional methods rely on the vapor pressure difference between water in the solution and that in moist air, it has been proposed to directly boil the desiccant in evacuated tube solar collectors. Regeneration by boiling makes the evacuated tube regenerator less susceptible to performance decreases due to humid weather. The low thermal loss through the walls of the evacuated tube also allows regeneration in colder climates. An experimental study was conducted to characterize the opportunity to directly regenerate liquid desiccants in evacuated tube solar collectors. Measurements were performed on a single tilted evacuated tube during outdoor tests using solutions of calcium chloride and water at nominal mass fractions of 10%, 30%, and 50%. The amount of water evaporated from a desiccant solution was determined by measuring both the change in mass of a solution and the mass of water evaporated during regeneration. The test apparatus was further instrumented to provide incident solar radiation on the tube and transient solution temperature measurements inside the collector tube. Test results indicated that the desiccant could be regenerated without significant concentration stratification in the tube. A model of the collector tube was developed, based on well-established efficiency relationships for solar collectors that relate useful energy production to the incident solar radiation and the thermal losses. Using model parameters identified by the experimental data, the model was demonstrated to effectively predict desiccant regeneration rates. The results suggest that regeneration performance can be predicted using simple models with conventional collector efficiency curves.
Advisors/Committee Members: Michael J. Brandemuehl, Moncef Krarti.
Subjects/Keywords: liquid; desiccant; evacuated tubes; regeneration; solar collectors; Architectural Engineering; Civil and Environmental Engineering
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APA (6th Edition):
Hubler, D. J. (2014). Regeneration of Liquid Desiccants in Evacuated Tube Solar Collectors. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/434
Chicago Manual of Style (16th Edition):
Hubler, Darrell J. “Regeneration of Liquid Desiccants in Evacuated Tube Solar Collectors.” 2014. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/434.
MLA Handbook (7th Edition):
Hubler, Darrell J. “Regeneration of Liquid Desiccants in Evacuated Tube Solar Collectors.” 2014. Web. 08 Mar 2021.
Vancouver:
Hubler DJ. Regeneration of Liquid Desiccants in Evacuated Tube Solar Collectors. [Internet] [Masters thesis]. University of Colorado; 2014. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/434.
Council of Science Editors:
Hubler DJ. Regeneration of Liquid Desiccants in Evacuated Tube Solar Collectors. [Masters Thesis]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/cven_gradetds/434
University of Colorado
2.
Osborne, Anna Louise.
Assessing the Impact of Occupant Behavior on Pre- and Post-Retrofit Energy Usage in Multi-Family Housing.
Degree: MS, 2014, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/431
► This investigation creates a tool to aid in the assessment of the impacts that behavior modifications and retrofits have on whole building energy usage. The…
(more)
▼ This investigation creates a tool to aid in the assessment of the impacts that behavior modifications and retrofits have on whole building energy usage. The tool was created to analyze pre- and post-retrofit/behavior modification data to determine the degree of savings incurred. The main focus of the project is a sensitivity analysis on the effects of behavior. The study includes the impacts of high- and low-energy-consuming behavior, and the total savings when coupled with building energy retrofits. For heating-dominated climates, results show a potential energy use savings of 10% from behavior, and a savings of 40% when combined with a whole-building retrofit. The number of air changes per hour, the setpoint, and the setback had the most significant savings. In the cooling-dominated climate, behavior had a much higher impact, accounting for 27% of the total 37% energy savings. Equipment schedule and setpoint had the highest impact.
Advisors/Committee Members: Moncef Krarti, John Z. Zhai, Michael J. Brandemuehl.
Subjects/Keywords: behavior; energy; equest; multifamily; retrofit; Architectural Engineering; Civil and Environmental Engineering
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APA (6th Edition):
Osborne, A. L. (2014). Assessing the Impact of Occupant Behavior on Pre- and Post-Retrofit Energy Usage in Multi-Family Housing. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/431
Chicago Manual of Style (16th Edition):
Osborne, Anna Louise. “Assessing the Impact of Occupant Behavior on Pre- and Post-Retrofit Energy Usage in Multi-Family Housing.” 2014. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/431.
MLA Handbook (7th Edition):
Osborne, Anna Louise. “Assessing the Impact of Occupant Behavior on Pre- and Post-Retrofit Energy Usage in Multi-Family Housing.” 2014. Web. 08 Mar 2021.
Vancouver:
Osborne AL. Assessing the Impact of Occupant Behavior on Pre- and Post-Retrofit Energy Usage in Multi-Family Housing. [Internet] [Masters thesis]. University of Colorado; 2014. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/431.
Council of Science Editors:
Osborne AL. Assessing the Impact of Occupant Behavior on Pre- and Post-Retrofit Energy Usage in Multi-Family Housing. [Masters Thesis]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/cven_gradetds/431
University of Colorado
3.
Spencer, Justin Sidney.
Analysis of EnergyPlus for Use in Residential Building Energy Optimization.
Degree: MS, 2010, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/33
► This work explored the utility of EnergyPlus as a simulation engine for doing residential building energy optimization, with the objective of finding the modeling…
(more)
▼ This work explored the utility of EnergyPlus as a simulation engine for doing residential building energy optimization, with the objective of finding the modeling areas that require further development in EnergyPlus for residential optimization applications. This work was conducted primarily during 2006-2007, with publication occurring later in 2010. The assessments and recommendations apply to the simulation tool versions available in 2007.
During this work, an EnergyPlus v2.0 (2007) input file generator was developed for use in BEopt 0.8.0.4 (2007). BEopt 0.8.0.4 is a residential Building Energy optimization program developed at the National Renewable Energy Laboratory in Golden,
Colorado.
Residential modeling capabilities of EnergyPlus v2.0 were scrutinized and tested. Modeling deficiencies were identified in a number of areas. These deficiencies were compared to deficiencies in the DOE2.2 V44E4(2007)/TRNSYS simulation engines. The highest priority gaps in EnergyPlus v2.0's residential modeling capability are in infiltration, duct leakage, and foundation modeling.
Optimization results from DOE2.2 V44E4 and EnergyPlus v2.0 were analyzed to search for modeling differences that have a significant impact on optimization results. Optimal buildings at different energy savings levels were compared to look for biases. It was discovered that the EnergyPlus v2.0 optimizations consistently chose higher wall insulation levels than the DOE2.2 V44E4 optimizations. The points composing the optimal paths chosen by DOE2.2 V44E4 and EnergyPlus v2.0 were compared to look for points chosen by one optimization that were significantly different from the other optimal path. These outliers were compared to consensus optimal points to determine the simulation differences that cause disparities in the optimization results. The differences were primarily caused by modeling of window radiation exchange and HVAC autosizing.
Advisors/Committee Members: Michael J. Brandemuehl, Moncef Krarti, Craig Christensen.
Subjects/Keywords: BEopt; building; energy; optimization; simulation; Architectural Engineering; Energy Systems; Engineering
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APA (6th Edition):
Spencer, J. S. (2010). Analysis of EnergyPlus for Use in Residential Building Energy Optimization. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/33
Chicago Manual of Style (16th Edition):
Spencer, Justin Sidney. “Analysis of EnergyPlus for Use in Residential Building Energy Optimization.” 2010. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/33.
MLA Handbook (7th Edition):
Spencer, Justin Sidney. “Analysis of EnergyPlus for Use in Residential Building Energy Optimization.” 2010. Web. 08 Mar 2021.
Vancouver:
Spencer JS. Analysis of EnergyPlus for Use in Residential Building Energy Optimization. [Internet] [Masters thesis]. University of Colorado; 2010. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/33.
Council of Science Editors:
Spencer JS. Analysis of EnergyPlus for Use in Residential Building Energy Optimization. [Masters Thesis]. University of Colorado; 2010. Available from: https://scholar.colorado.edu/cven_gradetds/33
University of Colorado
4.
Langner, Margarete Rois.
An Investigation of Design Parameters that Affect Commercial High-Rise Office Building Energy Consumption and Demand.
Degree: MS, 2010, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/41
► There are many factors that drive energy consumption and demand in high-rise commercial office buildings. Understanding the effects of individual building parameters and two-factor…
(more)
▼ There are many factors that drive energy consumption and demand in high-rise commercial office buildings. Understanding the effects of individual building parameters and two-factor interactions can be very useful for directing building audits, developing energy simulation models, and for building science research in general. In an effort to expedite building audit processes and energy model development, the work presented in this thesis offers strategies and best practices for efficiently conducting audits and developing building energy models. In conjunction, a fractional factorial analysis (FFA) was conducted to evaluate a large number of building parameters in an effort to quantify their effect on energy consumption and demand associated with the chiller, HVAC system, and the facility as a whole. The FFA utilized building data collected from twenty-two building audits of high-rise commercial office buildings located in the downtown Chicago Loop area. Data from these buildings were used to determine base and test values for each factor that was evaluated. Simulation results show the effects of each factor and two-factor interactions on energy consumption and demand over a set of climate zones. They also show that there is a particular sub-set of driving factors that are of primary importance. These factors include chiller COP, supply fan pressure rise, the window solar heat gain coefficient and U-value, and lighting and equipment power density. Similarly, the two-factor interaction study identified factors that have a significant effect on building energy when paired with another factor. The two-factor interactions with high significance included the thermal mass associated with both structural components and interior furnishings paired with one of the driving factors listed above. From these results, a better understanding of the effects and interactions of building parameters on energy consumption and demand was obtained, and recommendations were made to help accelerate building audit and energy model development processes.
Advisors/Committee Members: Gregor P. Henze, Michael J. Brandemuehl, Moncef Krarti.
Subjects/Keywords: building energy simulation; energy consumption and demand; EnergyPlus; fractional factorial analysis; high-rise commercial office buildings; Architectural Engineering; Mechanical Engineering
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APA (6th Edition):
Langner, M. R. (2010). An Investigation of Design Parameters that Affect Commercial High-Rise Office Building Energy Consumption and Demand. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/41
Chicago Manual of Style (16th Edition):
Langner, Margarete Rois. “An Investigation of Design Parameters that Affect Commercial High-Rise Office Building Energy Consumption and Demand.” 2010. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/41.
MLA Handbook (7th Edition):
Langner, Margarete Rois. “An Investigation of Design Parameters that Affect Commercial High-Rise Office Building Energy Consumption and Demand.” 2010. Web. 08 Mar 2021.
Vancouver:
Langner MR. An Investigation of Design Parameters that Affect Commercial High-Rise Office Building Energy Consumption and Demand. [Internet] [Masters thesis]. University of Colorado; 2010. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/41.
Council of Science Editors:
Langner MR. An Investigation of Design Parameters that Affect Commercial High-Rise Office Building Energy Consumption and Demand. [Masters Thesis]. University of Colorado; 2010. Available from: https://scholar.colorado.edu/cven_gradetds/41
University of Colorado
5.
Singh-Chhabra, Mohit.
Solar Domestic Hot Water Heater Performance: Effect of Changing Annual Load and Average Use Profile.
Degree: ME, 2015, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/131
► The objective of this research is to understand, using computer simulation, the effects of changing domestic hot water load and usage patterns on the…
(more)
▼ The objective of this research is to understand, using computer simulation, the effects of changing domestic hot water load and usage patterns on the system performance of active and passive solar domestic hot water (SDHW) systems. Annual hot water load, mains water temperature, daily hot water load profile shape, and daily hot water load were the parameters varied to simulate variations in load and usage patterns that we expect would occur in a household. The effect of changing these parameters was quantified by studying change in annual solar fraction and annual system efficiency. Active and passive SDHW system construction was first defined. The system components of both active and passive system solar hot water systems simulated were determined by market research. The components were sized adequately using accepted component sizing guidelines. Daily hot water draw profiles developed at NREL (National Renewable Energy Laboratory) were used as the base draw profiles. The base profile has morning and evening hump and a daily hot water load of 60 gallons on weekdays and 75 gallons on weekends. The annual simulations were conducted in TRNSYS using a five minute time-step. Active (glycol) systems show greatest variation in simulated performance due to large changes in annual load. Passive (ICS) systems display high sensitivity to hot water profile shape. This difference between the two systems is due to the presence of a well-insulated solar storage tank in the glycol system. The glycol system shows less variation in performance due to variation in draw profile than the ICS system due to the presence of an appropriately sized and insulated solar storage tank in the glycol system. The solar storage tank helps glycol systems meet the demand for hot water during hours of low sunlight (early morning and late evening). ICS systems show higher sensitivity to profile shape as they cannot meet hot water load during morning and evening times; this morning and evening hot water load is met by the auxiliary heating tank.
Advisors/Committee Members: Michael J. Brandemuehl, John Zhai, Moncef Krarti.
Subjects/Keywords: active systems; glycol systems; ICS systems; passive systems; Solar hot water; Civil Engineering
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APA (6th Edition):
Singh-Chhabra, M. (2015). Solar Domestic Hot Water Heater Performance: Effect of Changing Annual Load and Average Use Profile. (Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/131
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Singh-Chhabra, Mohit. “Solar Domestic Hot Water Heater Performance: Effect of Changing Annual Load and Average Use Profile.” 2015. Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/131.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Singh-Chhabra, Mohit. “Solar Domestic Hot Water Heater Performance: Effect of Changing Annual Load and Average Use Profile.” 2015. Web. 08 Mar 2021.
Vancouver:
Singh-Chhabra M. Solar Domestic Hot Water Heater Performance: Effect of Changing Annual Load and Average Use Profile. [Internet] [Thesis]. University of Colorado; 2015. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/131.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Singh-Chhabra M. Solar Domestic Hot Water Heater Performance: Effect of Changing Annual Load and Average Use Profile. [Thesis]. University of Colorado; 2015. Available from: https://scholar.colorado.edu/cven_gradetds/131
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Colorado
6.
Hermansen, Knud A.
Validation of Simplified Rack Boundary Conditions for Numerical Data Center Models.
Degree: MS, 2011, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/211
► As cloud computing and computational needs grow, data centers will continue to become a larger part of our energy load. Proper design and layout is…
(more)
▼ As cloud computing and computational needs grow, data centers will continue to become a larger part of our energy load. Proper design and layout is crucial to efficient energy use in data centers. Modeling the rack is one of critical pieces in this design. Often this is done as a black box rather than modeling the rack in detail. Modeling a computer rack as a black box has been done in numerous data center studies, but rarely has it been validated against experimental temperature and velocity data. This study looks at two simplified rack models and compares them against a rack composed of four 10U server simulators. The first model is an open box model that has a heating and fan plate and allows air to flow through the rack. The second model is a black box model that allows no flow through the rack and imposes a constant pressure boundary across the inlet and exhaust. The model adds the proportion of the rack load to the upwind cells at the rack inlet plate to generate the exhaust temperature profile. The models were tested across a range of airflows and rack loads. Agreements were found to be within 3°C and 0.2 m/s on average over all experiments. An interesting finding of this study was the importance of correctly capturing the boundary conditions at the perforated floor tile. Modeling the perforated floor tile as a nozzle using the momentum method described in ASHRAE RP-1009 was found to produce acceptable results for airflow from the perforated floor tile.
Advisors/Committee Members: John Zhai, James VanGilder, Michael J. Brandemuehl.
Subjects/Keywords: computational fluid dynamics; data centers; numerical modeling; rack modeling; temperature distribution; thermal managment; Architectural Engineering
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APA (6th Edition):
Hermansen, K. A. (2011). Validation of Simplified Rack Boundary Conditions for Numerical Data Center Models. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/211
Chicago Manual of Style (16th Edition):
Hermansen, Knud A. “Validation of Simplified Rack Boundary Conditions for Numerical Data Center Models.” 2011. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/211.
MLA Handbook (7th Edition):
Hermansen, Knud A. “Validation of Simplified Rack Boundary Conditions for Numerical Data Center Models.” 2011. Web. 08 Mar 2021.
Vancouver:
Hermansen KA. Validation of Simplified Rack Boundary Conditions for Numerical Data Center Models. [Internet] [Masters thesis]. University of Colorado; 2011. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/211.
Council of Science Editors:
Hermansen KA. Validation of Simplified Rack Boundary Conditions for Numerical Data Center Models. [Masters Thesis]. University of Colorado; 2011. Available from: https://scholar.colorado.edu/cven_gradetds/211
University of Colorado
7.
Gibson, Todd Allen.
Daylighting Software Validation Study and Development of a Simplified Method to Predict the Energy Impacts of Facade Design and Daylighting Control for Private Offices.
Degree: MS, 2011, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/223
► Early design phase decisions can be critically important to the energy impact of a building. Building orientation and exterior aesthetics which drive window sizes…
(more)
▼ Early design phase decisions can be critically important to the energy impact of a building. Building orientation and exterior aesthetics which drive window sizes and types are often made by architects and owners prior to the involvement of any daylighting or sustainability consultants. Because these designs can be difficult, if not impossible, to change as the design process proceeds, the need to inform and educate these decisions has led through this research to the development of a set of EnergyPlus based regression equations capable of predicting annual lighting, cooling, and heating loads of a private office design with minimal input. The ability to evaluate the impact of these three main energy consumption sources provides a complete picture of the consequences of design decisions that most other early design phase methods do not achieve. A test case using these equations calculated to within 4% to 8% of EnergyPlus simulation results. The development of the regression equations began with a validation study of four daylighting programs: EnergyPlus Detailed, EnergyPlus DELight, DAYSIM, and SPOT. Full scale daylighting measurements recorded in an empty private office in Ottawa, Ontario by the National Research Council of Canada provided data to validate the daylighting software against with EnergyPlus Detailed method selected for its accuracy and runtime. EnergyPlus was then used to perform parametric simulations of various building design parameters from which the regression formulas are created. These formulas are produced for four US cities of varying climates to confirm the regression approach is transferable.
Advisors/Committee Members: Moncef Krarti, Jonathon B. Protzman, Michael J. Brandemuehl.
Subjects/Keywords: daylighting; design tool; energy consumption; energy efficiency; energyplus; energy simulation; Architectural Engineering; Architecture
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APA (6th Edition):
Gibson, T. A. (2011). Daylighting Software Validation Study and Development of a Simplified Method to Predict the Energy Impacts of Facade Design and Daylighting Control for Private Offices. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/223
Chicago Manual of Style (16th Edition):
Gibson, Todd Allen. “Daylighting Software Validation Study and Development of a Simplified Method to Predict the Energy Impacts of Facade Design and Daylighting Control for Private Offices.” 2011. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/223.
MLA Handbook (7th Edition):
Gibson, Todd Allen. “Daylighting Software Validation Study and Development of a Simplified Method to Predict the Energy Impacts of Facade Design and Daylighting Control for Private Offices.” 2011. Web. 08 Mar 2021.
Vancouver:
Gibson TA. Daylighting Software Validation Study and Development of a Simplified Method to Predict the Energy Impacts of Facade Design and Daylighting Control for Private Offices. [Internet] [Masters thesis]. University of Colorado; 2011. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/223.
Council of Science Editors:
Gibson TA. Daylighting Software Validation Study and Development of a Simplified Method to Predict the Energy Impacts of Facade Design and Daylighting Control for Private Offices. [Masters Thesis]. University of Colorado; 2011. Available from: https://scholar.colorado.edu/cven_gradetds/223
University of Colorado
8.
Estep, Gregory Martin.
Low-Cost Building-Integrated Photovoltaic/Thermal Module Prototype Design and Analysis.
Degree: MS, 2012, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/253
► In order to maximize solar energy gains per square foot on a residential roof, the development of a new Building-Integrated Photovoltaic/Thermal (BIPV/T) module was…
(more)
▼ In order to maximize solar energy gains per square foot on a residential roof, the development of a new Building-Integrated Photovoltaic/Thermal (BIPV/T) module was designed, built and tested. The concept for the design was constrained by a provisional patent entitled,
Low-cost, modular mounting system for building-integrated photovoltaic/thermal collector. The novel aspect of the patent required that the framing/mounting system include an integrated heat conducting fluid conduit. Photovoltaic/Thermal collectors are capable of simultaneously producing electricity and hot water. A heat conducting fluid is passed underneath the PV laminate picking up the waste heat from the PV panel. The waste heat rejected to the fluid is useful for two reasons: 1) it cools the PV cells allowing for higher power conversion efficiencies and 2) it provides a source of heat for low-grade temperature applications. In addition to the solar performance, the building-integrated modules are to serve as façade elements, replacing traditional shingles or siding, which is accomplished by designing the frame with integrating flanges and gaskets that overlap one another providing a smooth, low-profile and aesthetic array. A prototype was fabricated by a local plastic shop and a physical experiment was built on the roof of the engineering center. Data collected from the experiment was used to calibrate a TRNSYS computer model which simulated the annual performance of a 5kW BIPV/T array on a typical American household for 20 non-freezing climate cities. The computer simulation found the BIPV/T modules were capable of meeting up to 80% of the domestic hot water load (the solar fraction), and an improved electrical power efficiency up to 2.6% in certain climates.
Advisors/Committee Members: Michael J. Brandemuehl, Moncef Krarti, John Zhai.
Subjects/Keywords: building-integrated; photovoltaic; solar; thermal; TRNSYS; Architectural Engineering; Electrical and Computer Engineering; Mechanical Engineering
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APA (6th Edition):
Estep, G. M. (2012). Low-Cost Building-Integrated Photovoltaic/Thermal Module Prototype Design and Analysis. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/253
Chicago Manual of Style (16th Edition):
Estep, Gregory Martin. “Low-Cost Building-Integrated Photovoltaic/Thermal Module Prototype Design and Analysis.” 2012. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/253.
MLA Handbook (7th Edition):
Estep, Gregory Martin. “Low-Cost Building-Integrated Photovoltaic/Thermal Module Prototype Design and Analysis.” 2012. Web. 08 Mar 2021.
Vancouver:
Estep GM. Low-Cost Building-Integrated Photovoltaic/Thermal Module Prototype Design and Analysis. [Internet] [Masters thesis]. University of Colorado; 2012. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/253.
Council of Science Editors:
Estep GM. Low-Cost Building-Integrated Photovoltaic/Thermal Module Prototype Design and Analysis. [Masters Thesis]. University of Colorado; 2012. Available from: https://scholar.colorado.edu/cven_gradetds/253
University of Colorado
9.
Kwag, Byung Chang.
Thermal Performance and Design Guidelines of Thermo-Active Foundations.
Degree: MS, 2012, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/306
► A thermo-active foundation system can be a cost-effective technology to utilize ground thermal energy to heat and cool buildings. Indeed, thermo-active foundations, also known…
(more)
▼ A thermo-active foundation system can be a cost-effective technology to utilize ground thermal energy to heat and cool buildings. Indeed, thermo-active foundations, also known as thermal piles, integrate heat exchangers with the foundation elements and thus eliminate the need of drilling deep boreholes typically required by the conventional ground source heat pumps. In order to properly design thermo-active foundation systems, their thermal performance under various operating and climatic conditions are evaluated as part of this study using detailed modeling and simulation analyses. In particular, a transient three-dimensional finite difference numerical model has been developed and validated to analyze thermal performances of thermo-active foundations. The numerical model is then used to assess the impact of design parameters such as foundation depth, shank space, fluid flow rate, and the number of loops on the effectiveness of thermal piles to exchange heat between the building and the ground. Moreover, thermal response factors have been developed to integrate the performance of thermo-active foundations within detailed whole-building simulation programs. In this study, response factors specific to thermo-active foundations are implemented into EnergyPlus to investigate the impact of various design and operating conditions. The results from the detailed simulation analysis are then used to develop a set of guidelines to properly design thermo-active foundation to meet heating and cooling loads of commercial buildings. The design guidelines define the required number of thermal piles needed heating and cooling loads for prototypical office buildings in selected US climatic zones. In particular, charts have been developed to help determine the number of thermal piles needed depending on heating and cooling loads, heat pump size, foundation depth, and climate.
Advisors/Committee Members: Moncef Krarti, Michael J. Brandemuehl, John Z. Zhai.
Subjects/Keywords: energy pile; foundation heat exchanger; geothermal; thermo-active foundation; Civil Engineering
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APA (6th Edition):
Kwag, B. C. (2012). Thermal Performance and Design Guidelines of Thermo-Active Foundations. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/306
Chicago Manual of Style (16th Edition):
Kwag, Byung Chang. “Thermal Performance and Design Guidelines of Thermo-Active Foundations.” 2012. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/306.
MLA Handbook (7th Edition):
Kwag, Byung Chang. “Thermal Performance and Design Guidelines of Thermo-Active Foundations.” 2012. Web. 08 Mar 2021.
Vancouver:
Kwag BC. Thermal Performance and Design Guidelines of Thermo-Active Foundations. [Internet] [Masters thesis]. University of Colorado; 2012. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/306.
Council of Science Editors:
Kwag BC. Thermal Performance and Design Guidelines of Thermo-Active Foundations. [Masters Thesis]. University of Colorado; 2012. Available from: https://scholar.colorado.edu/cven_gradetds/306
University of Colorado
10.
Rader, Emily Rose.
Field Measurement, Model Development, and Building Component Library Population of Retail Plug Loads.
Degree: MS, 2012, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/321
► Miscellaneous electric loads (MELs) comprise a growing percentage of commercial building energy use, expected to increase from 31% to 43% of total commercial building primary…
(more)
▼ Miscellaneous electric loads (MELs) comprise a growing percentage of commercial building energy use, expected to increase from 31% to 43% of total commercial building primary energy use by 2030. In building energy simulations, these loads are often poorly modeled or are outright neglected. A big box retail building with grocery was found to contain over 700 MELs. Through this study, 256 of those devices were metered, and the measured time-series data informed the creation of 260 EnergyPlus model snippets. Those model snippets were made publicly available through the newly developed Building Component Library (BCL). The use of these BCL components was worked into a modeler workflow, resulting in accuracy equal to the best of the commonly used plug load modeling strategies for an example building. The precision and detail of the BCL components exceeded the other methods.
Advisors/Committee Members: Gregor P. Henze, Larry J. Brackney, Michael J. Brandemuehl.
Subjects/Keywords: building energy modeling; component library; energyplus; miscellaneous electric load; plug load; Architectural Engineering; Energy Systems; Sustainability
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APA (6th Edition):
Rader, E. R. (2012). Field Measurement, Model Development, and Building Component Library Population of Retail Plug Loads. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/321
Chicago Manual of Style (16th Edition):
Rader, Emily Rose. “Field Measurement, Model Development, and Building Component Library Population of Retail Plug Loads.” 2012. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/321.
MLA Handbook (7th Edition):
Rader, Emily Rose. “Field Measurement, Model Development, and Building Component Library Population of Retail Plug Loads.” 2012. Web. 08 Mar 2021.
Vancouver:
Rader ER. Field Measurement, Model Development, and Building Component Library Population of Retail Plug Loads. [Internet] [Masters thesis]. University of Colorado; 2012. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/321.
Council of Science Editors:
Rader ER. Field Measurement, Model Development, and Building Component Library Population of Retail Plug Loads. [Masters Thesis]. University of Colorado; 2012. Available from: https://scholar.colorado.edu/cven_gradetds/321
University of Colorado
11.
Ryan, Miles.
Optimal Control Strategy Selection for Intelligent Pressure Independent Control Valves.
Degree: MS, Anthropology, 2014, University of Colorado
URL: https://scholar.colorado.edu/aren_gradetds/2
► Low Delta T Syndrome increases the energy consumption of chilled water systems. Numerous causes of Low Delta T lie at the cooling coils. As…
(more)
▼ Low Delta T Syndrome increases the energy consumption of chilled water systems. Numerous causes of Low Delta T lie at the cooling coils. As higher loads are put on a coil, more chilled water is sent through it. A point of saturation is reached when significant increases in chilled water flow results in negligible increases in provided cooling power. Recognition of when such saturation is occurring, and the ability to restrict flow in such situations, is needed to combat Low Delta T. An intelligent, pressure independent control valve attempts this. Through non-linear regression of measured coil data, a new approach for the valve to predict saturation was developed and tested. The resulting curve fit was also used to predict whether a coil was operating in a Constant Air Volume or Variable Air Volume system. 132 test coils over four climates and various system characteristics showed a 79.7% correct identification rate.
Advisors/Committee Members: Gregor P. Henze, Michael J. Brandemuehl, Moncef Krarti.
Subjects/Keywords: Four-Parameter Curve Fit; Intelligent Pressure Independent Control Valve; Architectural Engineering; Mechanical Engineering
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APA (6th Edition):
Ryan, M. (2014). Optimal Control Strategy Selection for Intelligent Pressure Independent Control Valves. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/aren_gradetds/2
Chicago Manual of Style (16th Edition):
Ryan, Miles. “Optimal Control Strategy Selection for Intelligent Pressure Independent Control Valves.” 2014. Masters Thesis, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/aren_gradetds/2.
MLA Handbook (7th Edition):
Ryan, Miles. “Optimal Control Strategy Selection for Intelligent Pressure Independent Control Valves.” 2014. Web. 08 Mar 2021.
Vancouver:
Ryan M. Optimal Control Strategy Selection for Intelligent Pressure Independent Control Valves. [Internet] [Masters thesis]. University of Colorado; 2014. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/aren_gradetds/2.
Council of Science Editors:
Ryan M. Optimal Control Strategy Selection for Intelligent Pressure Independent Control Valves. [Masters Thesis]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/aren_gradetds/2
University of Colorado
12.
Kang, Yoonsuk.
Bayesian Based Parameter Identification for Building Energy Models.
Degree: PhD, 2014, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/115
► In this research work, a series of sensitivity analyses were performed to validate the proposed Bayesian approach to identify unknown parameters in building energy…
(more)
▼ In this research work, a series of sensitivity analyses were performed to validate the proposed Bayesian approach to identify unknown parameters in building energy models. The proposed Bayesian approach mainly consisted of creating a Gaussian process emulator to sample the posterior distribution. Sensitivity case studies were carried out to investigate followings: appropriate sampling numbers, size of Gaussian process, observation noise, continuous/discrete variables situation. Validation on the proposed approach was done with closed loop results (one RC model and two DOE2.2 models) as well as three actual buildings (two commercial buildings and one residential building). The result showed success of identifying unknown parameters by higher occurrences on target values. Moreover, the proposed approach was tested in actual buildings and shown to calibrate the building energy models with unknown parameters still inside. As an application of the proposed Bayesian approach, development of identification of Energy Conservative Measures (ECMs) were carried out. The proposed approach succeeded in identifying the appropriate ECMs with uncertainties in budgets, initial costs, and actual performance of the ECMs. Furthermore, comparison studies between other linear models and traditional Bayesian approach have been carried out to demonstrate the characteristic of the proposed approach to other methods. Also, this study has validated the possibility of utilizing the simplified approach in a future study.
Advisors/Committee Members: Moncef Krarti, Michael J. Brandemuehl, John Zhai, Walter Beamer, Wisit Kumphai.
Subjects/Keywords: Bayesian; existing building; Gaussian process; parameter identification; prior belief; Architectural Engineering
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APA (6th Edition):
Kang, Y. (2014). Bayesian Based Parameter Identification for Building Energy Models. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/115
Chicago Manual of Style (16th Edition):
Kang, Yoonsuk. “Bayesian Based Parameter Identification for Building Energy Models.” 2014. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/115.
MLA Handbook (7th Edition):
Kang, Yoonsuk. “Bayesian Based Parameter Identification for Building Energy Models.” 2014. Web. 08 Mar 2021.
Vancouver:
Kang Y. Bayesian Based Parameter Identification for Building Energy Models. [Internet] [Doctoral dissertation]. University of Colorado; 2014. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/115.
Council of Science Editors:
Kang Y. Bayesian Based Parameter Identification for Building Energy Models. [Doctoral Dissertation]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/cven_gradetds/115
University of Colorado
13.
Kim, Joowook.
Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings.
Degree: PhD, 2017, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/377
► A large number of building energy simulation programs are used to evaluate indoor conditions and energy performance of buildings. Every building energy modeling tool…
(more)
▼ A large number of building energy simulation programs are used to evaluate indoor conditions and energy performance of buildings. Every building energy modeling tool calculates the heat and moisture exchange among the outdoor environment, the building envelope, and indoor environments as a fundamental component of heating, ventilating, and air conditioning (HVAC) loads. While all tools account for moisture flow through the envelope by infiltration, almost no users calculate moisture diffusion through the envelope or moisture storage in the building due to excessive computation time and unavailable material properties. However, research has shown, and work in this dissertation has confirmed, that significant errors in energy consumption predictions occur when moisture exchange is ignored, especially in hot and humid climates. This dissertation explores the impact of moisture exchange in building energy models and develops recommendations for improving simplified moisture exchange calculations under circumstances where the errors are the greatest. A research model has been developed to model detailed heat and moisture transfer in building envelopes, based on the HAMT model in EnergyPlus, which allows for the examination of both vapor and liquid transport mechanisms. The detailed model is validated through international benchmark tests and is used as a reference model to test simpler methods. Models for conduction transfer function (CTF) and effective mean penetration depth (EMPD) methods have also been developed. The research explored the opportunities to improve existing simplified moisture exchange models, specifically the heat and moisture transfer function (MTF) methods and the EMPD method. The MTF method accounts for transport of moisture vapor, but ignores liquid transport mechanism. An analysis was conducted to assess the impact of liquid transport on overall heat and mass transfer under various external environmental conditions for walls made of different building construction materials. Results indicate that liquid transport mechanism can have a significant impact on moisture flow through some construction materials, specifically concrete and gypsum, at high relative humidity. However, sensible and latent fluxes on the inside surface of multi-layer walls are not significantly impacted by the presence of liquid transport in the heat and moisture transfer calculations model. It is concluded that changes to the MTF model to account for liquid transport are not warranted. The EMPD model accounts for cyclic moisture storage at the surface of building materials and assemblies. As an extension of the conventional EMPD method, which accounts for buffering only on the inside surface, a two-sided moisture penetration depth model is proposed and evaluated how much the EMPD model at the external surface would influence thermal and moisture transfer at the inside surface. The results indicate that the two-sided EMPD model has no significant impact on inside sensible and latent heat…
Advisors/Committee Members: Michael J. Brandemuehl, Moncef Krarti, John Z. Zhai, Wil V. Srubar, Jason Woods.
Subjects/Keywords: building simulation; empd; energyplus; heat and moisture; latent to sensible ratio; ssmf; Architectural Engineering; Construction Engineering
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APA (6th Edition):
Kim, J. (2017). Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/377
Chicago Manual of Style (16th Edition):
Kim, Joowook. “Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings.” 2017. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/377.
MLA Handbook (7th Edition):
Kim, Joowook. “Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings.” 2017. Web. 08 Mar 2021.
Vancouver:
Kim J. Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings. [Internet] [Doctoral dissertation]. University of Colorado; 2017. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/377.
Council of Science Editors:
Kim J. Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings. [Doctoral Dissertation]. University of Colorado; 2017. Available from: https://scholar.colorado.edu/cven_gradetds/377
University of Colorado
14.
Tanner, Ryan Adams.
Stochastic Optimization of Building Control Systems for Mixed-Mode Buildings.
Degree: PhD, 2014, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/441
► Mixed mode (MM) buildings are a subset of low-energy buildings that employ both natural mechanical ventilation, often using manually operable windows for natural ventilation,…
(more)
▼ Mixed mode (MM) buildings are a subset of low-energy buildings that employ both natural mechanical ventilation, often using manually operable windows for natural ventilation, along with other low-exergy cooling systems such as radiant cooling. This combination of systems has proven difficult to control in practice, in particular due to the potential for occupants to significantly impact building performance. Model predictive control (MPC) and rule extraction are promising methods for optimizing MM building systems in an offline setting, and for generating usable control rules that can be implemented in practice. Simulation studies were performed to investigate the impact that occupant actions have on mixed mode buildings, and to improve the performance of natural ventilation controls in mixed mode buildings while accounting for uncertain occupant behavior. Results show that accounting for occupant behavior in building simulations provides useful insight into the robustness of different control strategies with respect to the impact of occupant actions. Two approaches to improving natural ventilation controls are applied to a physical building; the first seeks to improve on existing control logic by optimizing setpoints, while the second employs MPC and rule extraction to generate all new control logic. Each approach provides insight into potential flaws in existing logic and suggests revised logic that leads to better performance in the presence of occupant behavior. In a final study, rule extraction is applied to optimal control datasets for multiple seasons and locations to develop control rules that approximate optimal controller performance. Converting state information to state-change information prior to applying rule extraction is shown to improve the performance of extracted rules, and it is shown that rules generated using data for a single season or location do not transfer well to other seasons or locations.
Advisors/Committee Members: Gregor P. Henze, Gail S. Brager, Balaji Rajagopalan, Michael J. Brandemuehl, Clemens Felsmann.
Subjects/Keywords: hvac control; model predictive control; natural ventilation; occupant behavior; stochastic optimization; uncertainty quantification; Architectural Engineering; Civil Engineering; Mechanical Engineering
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APA (6th Edition):
Tanner, R. A. (2014). Stochastic Optimization of Building Control Systems for Mixed-Mode Buildings. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/441
Chicago Manual of Style (16th Edition):
Tanner, Ryan Adams. “Stochastic Optimization of Building Control Systems for Mixed-Mode Buildings.” 2014. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/441.
MLA Handbook (7th Edition):
Tanner, Ryan Adams. “Stochastic Optimization of Building Control Systems for Mixed-Mode Buildings.” 2014. Web. 08 Mar 2021.
Vancouver:
Tanner RA. Stochastic Optimization of Building Control Systems for Mixed-Mode Buildings. [Internet] [Doctoral dissertation]. University of Colorado; 2014. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/441.
Council of Science Editors:
Tanner RA. Stochastic Optimization of Building Control Systems for Mixed-Mode Buildings. [Doctoral Dissertation]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/cven_gradetds/441
University of Colorado
15.
Corbin, Charles David.
Assessing Impact of Large-Scale Distributed Residential HVAC Control Optimization on Electricity Grid Operation and Renewable Energy Integration.
Degree: PhD, 2014, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/460
► Demand management is an important component of the emerging Smart Grid, and a potential solution to the supply-demand imbalance occurring increasingly as intermittent renewable electricity…
(more)
▼ Demand management is an important component of the emerging Smart Grid, and a potential solution to the supply-demand imbalance occurring increasingly as intermittent renewable electricity is added to the generation mix. Model predictive control (MPC) has shown great promise for controlling HVAC demand in commercial buildings, making it an ideal solution to this problem. MPC is believed to hold similar promise for residential applications, yet very few examples exist in the literature despite a growing interest in residential demand management. This work explores the potential for residential buildings to shape electric demand at the distribution feeder level in order to reduce peak demand, reduce system ramping, and increase load factor using detailed sub-hourly simulations of thousands of buildings coupled to distribution power flow software. More generally, this work develops a methodology for the directed optimization of residential HVAC operation using a distributed but directed MPC scheme that can be applied to today's programmable thermostat technologies to address the increasing variability in electric supply and demand. Case studies incorporating varying levels of renewable energy generation demonstrate the approach and highlight important considerations for large-scale residential model predictive control.
Advisors/Committee Members: Gregor P. Henze, Michael J. Brandemuehl, Timothy X. Brown, Moncef Krarti, Clemens Felsmann.
Subjects/Keywords: demand response; electric grid; heating ventilating and air conditioning; model predictive control; optimization; residential buildings; Architectural Engineering; Engineering; Power and Energy
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APA (6th Edition):
Corbin, C. D. (2014). Assessing Impact of Large-Scale Distributed Residential HVAC Control Optimization on Electricity Grid Operation and Renewable Energy Integration. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/460
Chicago Manual of Style (16th Edition):
Corbin, Charles David. “Assessing Impact of Large-Scale Distributed Residential HVAC Control Optimization on Electricity Grid Operation and Renewable Energy Integration.” 2014. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/460.
MLA Handbook (7th Edition):
Corbin, Charles David. “Assessing Impact of Large-Scale Distributed Residential HVAC Control Optimization on Electricity Grid Operation and Renewable Energy Integration.” 2014. Web. 08 Mar 2021.
Vancouver:
Corbin CD. Assessing Impact of Large-Scale Distributed Residential HVAC Control Optimization on Electricity Grid Operation and Renewable Energy Integration. [Internet] [Doctoral dissertation]. University of Colorado; 2014. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/460.
Council of Science Editors:
Corbin CD. Assessing Impact of Large-Scale Distributed Residential HVAC Control Optimization on Electricity Grid Operation and Renewable Energy Integration. [Doctoral Dissertation]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/cven_gradetds/460
University of Colorado
16.
Pavlak, Gregory S.
Building-To-Grid Integration Through Commercial Building Portfolios Participating in Energy and Frequency Regulation Markets.
Degree: PhD, 2014, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/464
► Building energy use is a significant contributing factor to growing worldwide energy demands. In pursuit of a sustainable energy future, commercial building operations must be…
(more)
▼ Building energy use is a significant contributing factor to growing worldwide energy demands. In pursuit of a sustainable energy future, commercial building operations must be intelligently integrated with the electric system to increase efficiency and enable renewable generation. Toward this end, a model-based methodology was developed to estimate the capability of commercial buildings to participate in frequency regulation ancillary service markets. This methodology was integrated into a supervisory model predictive controller to optimize building operation in consideration of energy prices, demand charges, and ancillary service revenue. The supervisory control problem was extended to building portfolios to evaluate opportunities for synergistic effect among multiple, centrally-optimized buildings. Simulation studies performed showed that the multi-market optimization was able to determine appropriate opportunities for buildings to provide frequency regulation. Total savings were increased by up to thirteen percentage points, depending on the simulation case. Furthermore, optimizing buildings as a portfolio achieved up to seven additional percentage points of savings, depending on the case. Enhanced energy and cost savings opportunities were observed by taking the novel perspective of optimizing building portfolios in multiple grid markets, motivating future pursuits of advanced control paradigms that enable a more intelligent electric grid.
Advisors/Committee Members: Gregor P. Henze, Michael J. Brandemuehl, Moncef Krarti, Rajagopalan Balaji, Clemens Felsmann.
Subjects/Keywords: building energy modeling; buildings to grid integration; frequency regulation ancillary service; portfolio optimization; supervisory model predictive control; thermal mass optimization; Architectural Engineering; Mechanical Engineering; Power and Energy
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APA (6th Edition):
Pavlak, G. S. (2014). Building-To-Grid Integration Through Commercial Building Portfolios Participating in Energy and Frequency Regulation Markets. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/464
Chicago Manual of Style (16th Edition):
Pavlak, Gregory S. “Building-To-Grid Integration Through Commercial Building Portfolios Participating in Energy and Frequency Regulation Markets.” 2014. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/464.
MLA Handbook (7th Edition):
Pavlak, Gregory S. “Building-To-Grid Integration Through Commercial Building Portfolios Participating in Energy and Frequency Regulation Markets.” 2014. Web. 08 Mar 2021.
Vancouver:
Pavlak GS. Building-To-Grid Integration Through Commercial Building Portfolios Participating in Energy and Frequency Regulation Markets. [Internet] [Doctoral dissertation]. University of Colorado; 2014. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/464.
Council of Science Editors:
Pavlak GS. Building-To-Grid Integration Through Commercial Building Portfolios Participating in Energy and Frequency Regulation Markets. [Doctoral Dissertation]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/cven_gradetds/464
University of Colorado
17.
Florita, Anthony Reed.
A Data-Driven Toolchain for the Operational Performance Analysis and Optimization of Buildings.
Degree: PhD, 2019, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/480
► Automation has proven indispensable to advancing human endeavors. Within the built environment its evolution and sophistication are on the cusp of moving beyond automatic control…
(more)
▼ Automation has proven indispensable to advancing human endeavors. Within the built environment its evolution and sophistication are on the cusp of moving beyond automatic control into automated prediction and diagnosis. A data-driven toolchain is developed so human efforts can be focused on high-value concerns. The research examines smart buildings as a cyberphysical construct and places the Bayesian perspective as paramount. Prior knowledge is leveraged through common building energy modeling and simulation tools, which are utilized and extended. An iterative, three-step process is developed to 1) classify building energy performance scenarios, 2) forecast dynamics over a planning horizon of interest, and 3) signal human decision-makers concerning deviations from ideal behavior. In the classification step, focus is placed on the discrete wavelet transformation of electrical demand profiles, producing energy and entropy feature extraction from the wavelet levels at definitive time frames, and Bayesian probabilistic hierarchical clustering. The process yields a categorized and manageable set of representative electrical demand profiles for smart grid applications. In the forecasting step, a cyclical two-stage model predictive control process of policy planning followed by execution is evaluated. The results show that even the most complicated nonlinear autoregressive neural network with exogenous input does not appear to warrant the additional efforts in forecasting model development and training in comparison to the simpler models. In the signaling step, a simulation study is considered to assess whole-building energy signaling accuracy in the presence of uncertainty and faults at the submetered level, which may lead to tradeoffs at the whole-building level that are not detectable without submetering. Together, the steps form a data-driven toolchain for the operational performance analysis and optimization of buildings.
Advisors/Committee Members: Gregor P. Henze, Michael J. Brandemuehl, Balaji Rajagopalan, Kyri A. Baker, Robert H. Dodier.
Subjects/Keywords: buildings; classification; forecasting; operations; optimization; signaling; Architectural Engineering; Mechanical Engineering; Oil, Gas, and Energy
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APA (6th Edition):
Florita, A. R. (2019). A Data-Driven Toolchain for the Operational Performance Analysis and Optimization of Buildings. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/480
Chicago Manual of Style (16th Edition):
Florita, Anthony Reed. “A Data-Driven Toolchain for the Operational Performance Analysis and Optimization of Buildings.” 2019. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/480.
MLA Handbook (7th Edition):
Florita, Anthony Reed. “A Data-Driven Toolchain for the Operational Performance Analysis and Optimization of Buildings.” 2019. Web. 08 Mar 2021.
Vancouver:
Florita AR. A Data-Driven Toolchain for the Operational Performance Analysis and Optimization of Buildings. [Internet] [Doctoral dissertation]. University of Colorado; 2019. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/480.
Council of Science Editors:
Florita AR. A Data-Driven Toolchain for the Operational Performance Analysis and Optimization of Buildings. [Doctoral Dissertation]. University of Colorado; 2019. Available from: https://scholar.colorado.edu/cven_gradetds/480
University of Colorado
18.
Al-Saadi, Saleh Nasser.
Modeling and Simulation of PCM-Enhanced Façade Systems.
Degree: PhD, 2014, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/52
► Building façade contributes to the overall architectural aesthetic but can be utilized for heat storage when proper systems are incorporated. Latent heat storage such…
(more)
▼ Building façade contributes to the overall architectural aesthetic but can be utilized for heat storage when proper systems are incorporated. Latent heat storage such as using a phase change material (PCM) gains growing attentions recently due to its ability of storing significant thermal energy within a small volume, making it one of most promising technologies for developing energy efficient buildings. This research is focused on modeling and simulation of PCM when integrated into advanced façade systems. The study first reviews the different mathematical modeling methods generally used for PCM's simulations. It categorizes the PCM's numerical models that are implemented for standalone facade systems. The study then evaluates the PCM's models that are integrated into whole building simulation tools such as EnergyPlus, TRNSYS, ESPr etc. It is revealed that the heat capacity method is mostly used in programs, despite its limitations on time and spatial resolutions. Therefore, alternative numerical models are investigated to overcome the above constrains and limitations in current PCM's simulation practice. Eight potential computational models based on a fully implicit finite volume method are developed in MATLAB/SIMULINK environment, validated using experimental results from the literature and verified against well-known building simulation programs. A linearized enthalpy method with hybrid correction scheme is proposed and validated in this work as an improvement to the existing numerical schemes for implementation into building simulation tools. Through sensitivity analysis achieved by varying the PCM thermal properties, the models have been analyzed for their computational efficiency and prediction accuracy. Some models are found sensitive to melting range of PCM, for example heat capacity method, but less sensitive to the variations of latent heat. Among the correction schemes, the non-iterative scheme is inaccurate due to the significant temperature spikes when PCM changes a state. The iterative and the hybrid correction schemes are computationally efficient and less sensitive to variations of PCM's thermal properties. Hence, these two schemes can potentially be implemented for modeling PCM instead of existing slow and unstable numerical algorithms. Based on this conclusion, a library of modules capable of modeling Advanced Façade Systems, entitled "AdvFacSy" toolbox, is developed in SIMULINK GUI environment. The toolbox can be easily used to evaluate innovative advanced façade systems with and without PCM. Using this toolbox, two PCM-enhanced façade designs are evaluated and general conclusions have been drawn. Using a novel coupling methodology, several modules from the toolbox are then fully integrated into TRNSYS; a whole-building simulation tool. In addition, a standard TRNSYS module, Type-285, is specifically developed under this research work for modeling multilayer wall with/without PCM. A typical residential building with PCM-embedded walls is analyzed under representative US…
Advisors/Committee Members: Zhiqiang (John) Zhai, Moncef Krarti, Michael J. Brandemuehl, Harihar Rajaram, Kurt Maute.
Subjects/Keywords: energy efficiency; façade system; latent heat storage; MATLAB/SIMULINK; PCM; TRNSYS; Architectural Engineering; Civil Engineering; Energy Systems
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APA (6th Edition):
Al-Saadi, S. N. (2014). Modeling and Simulation of PCM-Enhanced Façade Systems. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/52
Chicago Manual of Style (16th Edition):
Al-Saadi, Saleh Nasser. “Modeling and Simulation of PCM-Enhanced Façade Systems.” 2014. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/52.
MLA Handbook (7th Edition):
Al-Saadi, Saleh Nasser. “Modeling and Simulation of PCM-Enhanced Façade Systems.” 2014. Web. 08 Mar 2021.
Vancouver:
Al-Saadi SN. Modeling and Simulation of PCM-Enhanced Façade Systems. [Internet] [Doctoral dissertation]. University of Colorado; 2014. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/52.
Council of Science Editors:
Al-Saadi SN. Modeling and Simulation of PCM-Enhanced Façade Systems. [Doctoral Dissertation]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/cven_gradetds/52
University of Colorado
19.
Kim, Joowook.
Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings.
Degree: PhD, Civil, Environmental & Architectural Engineering, 2017, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/82
► A large number of building energy simulation programs are used to evaluate indoor conditions and energy performance of buildings. Every building energy modeling tool…
(more)
▼ A large number of building energy simulation programs are used to evaluate indoor conditions and energy performance of buildings. Every building energy modeling tool calculates the heat and moisture exchange among the outdoor environment, the building envelope, and indoor environments as a fundamental component of heating, ventilating, and air conditioning (HVAC) loads. While all tools account for moisture flow through the envelope by infiltration, almost no users calculate moisture diffusion through the envelope or moisture storage in the building due to excessive computation time and unavailable material properties. However, research has shown, and work in this dissertation has confirmed, that significant errors in energy consumption predictions occur when moisture exchange is ignored, especially in hot and humid climates. This dissertation explores the impact of moisture exchange in building energy models and develops recommendations for improving simplified moisture exchange calculations under circumstances where the errors are the greatest. A research model has been developed to model detailed heat and moisture transfer in building envelopes, based on the HAMT model in EnergyPlus, which allows for the examination of both vapor and liquid transport mechanisms. The detailed model is validated through international benchmark tests and is used as a reference model to test simpler methods. Models for conduction transfer function (CTF) and effective mean penetration depth (EMPD) methods have also been developed. The research explored the opportunities to improve existing simplified moisture exchange models, specifically the heat and moisture transfer function (MTF) methods and the EMPD method. The MTF method accounts for transport of moisture vapor, but ignores liquid transport mechanism. An analysis was conducted to assess the impact of liquid transport on overall heat and mass transfer under various external environmental conditions for walls made of different building construction materials. Results indicate that liquid transport mechanism can have a significant impact on moisture flow through some construction materials, specifically concrete and gypsum, at high relative humidity. However, sensible and latent fluxes on the inside surface of multi-layer walls are not significantly impacted by the presence of liquid transport in the heat and moisture transfer calculations model. It is concluded that changes to the MTF model to account for liquid transport are not warranted. The EMPD model accounts for cyclic moisture storage at the surface of building materials and assemblies. As an extension of the conventional EMPD method, which accounts for buffering only on the inside surface, a two-sided moisture penetration depth model is proposed and evaluated how much the EMPD model at the external surface would influence thermal and moisture transfer at the inside surface. The results indicate that the two-sided EMPD model has no significant impact on inside sensible and latent heat…
Advisors/Committee Members: Michael J. Brandemuehl, Moncef Krarti, John Z. Zhai, Wil V. Srubar, Jason Woods.
Subjects/Keywords: Building simulation; EMPD; EnergyPlus; Heat and moisture; Latent to sensible ratio; SSMF; Architectural Engineering
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APA (6th Edition):
Kim, J. (2017). Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/82
Chicago Manual of Style (16th Edition):
Kim, Joowook. “Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings.” 2017. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/82.
MLA Handbook (7th Edition):
Kim, Joowook. “Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings.” 2017. Web. 08 Mar 2021.
Vancouver:
Kim J. Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings. [Internet] [Doctoral dissertation]. University of Colorado; 2017. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/82.
Council of Science Editors:
Kim J. Development of a Simplified Heat and Moisture Transfer Model for Residential Buildings. [Doctoral Dissertation]. University of Colorado; 2017. Available from: https://scholar.colorado.edu/cven_gradetds/82
University of Colorado
20.
Zhao, Peng.
Dynamic Building-To-Grid Integration Through Combined Building System Resources for Frequency Regulation Service.
Degree: PhD, 2015, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/114
► Frequency regulation (FR) is the electric grid service responsible for maintaining the system frequency at its nominal value of 60 Hz in the United States…
(more)
▼ Frequency regulation (FR) is the electric grid service responsible for maintaining the system frequency at its nominal value of 60 Hz in the United States - an indicator of energy balance on the grid. In cases of mismatch between power supply and demand, frequency regulation resources either on the generation or the demand side, responding rapidly to restore system frequency to its nominal value. Due to the limited responsiveness of electric generators, fast and accurate demand side resources (DSR) have recently been encouraged to participate in frequency regulation. The tested DSR's include flywheels and battery banks. However, high initial equipment investment is typically required for these projects. Large commercial buildings dominating many urban cores have been shown to provide effective load shaping with little or no impact on occupants' comfort. This allows FR participation by manipulating the operation of heating, ventilating and air-conditioning (HVAC) systems. Commercial buildings are characterized by numerous interdependent HVAC subsystems and their controls. Therefore, a high-level supervisory control strategy is developed to take advantage of interactions between HVAC subsystems for FR with buildings' available capacity. This dynamically integrates building operations into grid operations (i.e., the ancillary services market) so that both parties know each other's capacities and constraints ahead of time. Unlike traditional demand response (DR) programs that engage only sporadically during times of grid stress, dynamic building-to-grid integration automatically and continuously provides solutions from the demand side maintaining energy balance on the gird. The benefit is expected to go beyond any current demand response programs.
Advisors/Committee Members: Gregor P. Henze, Frank S. Barnes, Michael J. Brandemuehl, Clemens Felsmann, John Zhai.
Subjects/Keywords: building controls; building HVAC systems; building-to-grid integration; demand response; dynamic frequency regulation; Architectural Engineering
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APA (6th Edition):
Zhao, P. (2015). Dynamic Building-To-Grid Integration Through Combined Building System Resources for Frequency Regulation Service. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/114
Chicago Manual of Style (16th Edition):
Zhao, Peng. “Dynamic Building-To-Grid Integration Through Combined Building System Resources for Frequency Regulation Service.” 2015. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/114.
MLA Handbook (7th Edition):
Zhao, Peng. “Dynamic Building-To-Grid Integration Through Combined Building System Resources for Frequency Regulation Service.” 2015. Web. 08 Mar 2021.
Vancouver:
Zhao P. Dynamic Building-To-Grid Integration Through Combined Building System Resources for Frequency Regulation Service. [Internet] [Doctoral dissertation]. University of Colorado; 2015. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/114.
Council of Science Editors:
Zhao P. Dynamic Building-To-Grid Integration Through Combined Building System Resources for Frequency Regulation Service. [Doctoral Dissertation]. University of Colorado; 2015. Available from: https://scholar.colorado.edu/cven_gradetds/114
University of Colorado
21.
Kwag, Byung Chang.
Thermal Performance and Design Guidelines of Thermo-Active Foundations.
Degree: PhD, 2015, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/144
► A thermo-active foundation system can be a cost-effective technology to utilize ground thermal energy to heat and cool buildings. Indeed, thermo-active foundations, also known…
(more)
▼ A thermo-active foundation system can be a cost-effective technology to utilize ground thermal energy to heat and cool buildings. Indeed, thermo-active foundations, also known as thermal piles, integrate heat exchangers with the foundation elements and thus eliminate the need of drilling deep boreholes typically required by the conventional ground source heat pumps. In order to properly design thermo-active foundation systems, their thermal performance under various operating and climatic conditions are evaluated as part of this study using detailed modeling and simulation analyses. In particular, a transient three-dimensional finite difference numerical model has been developed and validated to analyze thermal performances of thermo-active foundations. The numerical model is then used to assess the impact of design parameters such as foundation depth, shank space, fluid flow rate, and the number of loops on the effectiveness of thermal piles to exchange heat between the building and the ground. Moreover, thermal response factors have been developed to integrate the performance of thermo-active foundations within detailed whole-building simulation programs. In this study, response factors specific to thermo-active foundations are implemented into EnergyPlus to investigate the impact of design and operating conditions. The results from the detailed simulation analysis are then used to develop a set of guidelines to properly design thermo-active foundation to meet heating and cooling loads of commercial buildings. This paper develops the design guide chart for TAF systems. The design guide chart provides the determination of required heat exchanger pipe length per water-to-water heat pump capacity for certain annual average ground temperature and for certain targeted maximum entering water temperature to a heat pump. Using an example application, this paper presents the usage of the design guide chart as well as shows the potential of the design guide chart for designing TAF system.
Advisors/Committee Members: Moncef Krarti, Michael J. Brandemuehl, John Z. Zhai, Wil V. Srubar, Junghyon Mun.
Subjects/Keywords: design guideline; energy foundation; ground source heat pump system; thermal response factors; thermo-active foundation; Architectural Engineering
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APA (6th Edition):
Kwag, B. C. (2015). Thermal Performance and Design Guidelines of Thermo-Active Foundations. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/144
Chicago Manual of Style (16th Edition):
Kwag, Byung Chang. “Thermal Performance and Design Guidelines of Thermo-Active Foundations.” 2015. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/144.
MLA Handbook (7th Edition):
Kwag, Byung Chang. “Thermal Performance and Design Guidelines of Thermo-Active Foundations.” 2015. Web. 08 Mar 2021.
Vancouver:
Kwag BC. Thermal Performance and Design Guidelines of Thermo-Active Foundations. [Internet] [Doctoral dissertation]. University of Colorado; 2015. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/144.
Council of Science Editors:
Kwag BC. Thermal Performance and Design Guidelines of Thermo-Active Foundations. [Doctoral Dissertation]. University of Colorado; 2015. Available from: https://scholar.colorado.edu/cven_gradetds/144
University of Colorado
22.
May-Ostendorp, Peter Thomas.
Offline Model Predictive Control of Mixed Mode Buildings for Near-Optimal Supervisory Control.
Degree: PhD, 2012, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/304
► Model predictive control (MPC) is a powerful technique that can be used to reduce the operational cost, energy consumption, and environmental footprint of buildings.…
(more)
▼ Model predictive control (MPC) is a powerful technique that can be used to reduce the operational cost, energy consumption, and environmental footprint of buildings. MPC optimizes control decisions to minimize the objective function produced by a building energy model and has been successfully applied to a range of control problems in buildings, usually thermal mass storage. Parametric simulation studies are typically conducted, and the resulting solution patterns are used to inform control strategies. A model predictive controller can also directly control building equipment, but in order to achieve faster solution convergence needed for real-time implementation, reduced-order gray- and black-box models are often employed that can be optimized through linear or quadratic programming. Despite the widespread potential for thermal mass control in buildings, MPC of this kind is challenging to implement due to the necessity of reduced-order models and the need to integrate with building automation systems (BAS). This dissertation examines the possibility of using MPC conducted on white-box building energy models—the same types used to evaluate building designs—to develop datasets from which near-optimal control rules can be extracted using supervised learning techniques. This allows for the development of custom supervisory controllers that more closely approximate optimal energy and thermal comfort results compared to conventional control heuristics. Rules are developed in such a form that they can be implemented in a conventional BAS. The dissertation uses the case of mixed mode (MM) buildings to test these techniques. A proof-of-concept rule extraction case is first presented for a simple binary natural ventilation control problem to test the utility of several data mining and statistical techniques to the problem, including generalized linear models (GLM), classification and regression trees (CART) and adaptive boosting. Next, a simulation study is conducted to explore a variety of more complex MM optimal control problems on four different MM building types and in five different climates. Two of these cases form the training set for further rule extraction, testing the applicability of this technique beyond simple binary decisions. CARTs were found to be successful in reproducing optimal supervisory control sequences, often yielding greater than 90% of optimizer energy savings with minimal thermal comfort consequences. Robustness of extracted rules and generalizability to broader cases (e.g. other building types and climates) is examined. Finally, an experiment is presented in which the energy and comfort performance of extracted rules are tested on a radiantly cooled test cell. The impacts of model calibration mismatch and weather forecast uncertainty are examined and are found to contribute significantly to the reduced experimental performance of the rules. The research provides two key outcomes for the larger building community. For designers of MM buildings, the simulation study…
Advisors/Committee Members: Gregor P. Henze, Balaji Rajagopalan, Michael J. Brandemuehl, Moncef Krarti, Gail S. Brager.
Subjects/Keywords: building energy simulation; mixed mode buildings; model predictive control; optimal control; rule extraction; thermal comfort; Civil Engineering; Mechanical Engineering
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APA (6th Edition):
May-Ostendorp, P. T. (2012). Offline Model Predictive Control of Mixed Mode Buildings for Near-Optimal Supervisory Control. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/304
Chicago Manual of Style (16th Edition):
May-Ostendorp, Peter Thomas. “Offline Model Predictive Control of Mixed Mode Buildings for Near-Optimal Supervisory Control.” 2012. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/304.
MLA Handbook (7th Edition):
May-Ostendorp, Peter Thomas. “Offline Model Predictive Control of Mixed Mode Buildings for Near-Optimal Supervisory Control.” 2012. Web. 08 Mar 2021.
Vancouver:
May-Ostendorp PT. Offline Model Predictive Control of Mixed Mode Buildings for Near-Optimal Supervisory Control. [Internet] [Doctoral dissertation]. University of Colorado; 2012. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/304.
Council of Science Editors:
May-Ostendorp PT. Offline Model Predictive Control of Mixed Mode Buildings for Near-Optimal Supervisory Control. [Doctoral Dissertation]. University of Colorado; 2012. Available from: https://scholar.colorado.edu/cven_gradetds/304
University of Colorado
23.
Chinnis, Darcie Alanna O'Connor.
Exploration of a Dynamic Lighting Energy Modeling Algorithm for Data Collection Support.
Degree: PhD, 2013, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/341
► The purpose of this research was to identify appropriate occupancy and lighting energy models for predicting lighting energy use in buildings and use those results…
(more)
▼ The purpose of this research was to identify appropriate occupancy and lighting energy models for predicting lighting energy use in buildings and use those results to inform data collection recommendations. A first-order inhomogeneous Markov-chain occupancy model was selected to simulate occupancy patterns in single-occupancy offices. A stochastic lighting action model, modified to bring it in line with current research, was used to simulate the interaction of those occupants with their lighting system assuming certain luminous conditions, including the contribution of daylight. Additionally, the lighting control model was expanded to include a range of user types between a true "active" user who acts in a very energy-aggressive manner and a true "passive" user who uses their lighting independent of daylight conditions and with less regard for wasted energy. The combination of these two models was assessed in a sensitivity analysis using both sensitivity index and total sensitivity for each parameter, which allows their contribution to the combined model's variance to be evaluated. It was found that the mobility parameter in the occupancy model contributed most to the model variance, followed closely by the probability of a switch-off action at departure. The switch-on actions, both at arrival and during occupancy, contributed the least to the model's variance. The combination of models was also applied to assess their ability to predict lighting energy use through comparison to deterministic modeling results and sub-metered lighting energy data from an actual building. Based on the results of that validation assessment, it was found that the limitations in the occupancy model prevented good agreement between measured and predicted performance. Additional model parameters were proposed for integration into the occupancy model, and the revised occupancy model was validated against the sub-metered lighting energy data. The modifications to the occupancy model were found to substantially improve the accuracy of the predictions compared to the sub-metered data.
Advisors/Committee Members: Gregor P. Henze, Michael J. Brandemuehl, Moncef Krarti, David Bortz, Kevin Houser.
Subjects/Keywords: energy; lighting; occupancy; sensitivity analysis; simulation; Architectural Engineering
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APA (6th Edition):
Chinnis, D. A. O. (2013). Exploration of a Dynamic Lighting Energy Modeling Algorithm for Data Collection Support. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/341
Chicago Manual of Style (16th Edition):
Chinnis, Darcie Alanna O'Connor. “Exploration of a Dynamic Lighting Energy Modeling Algorithm for Data Collection Support.” 2013. Doctoral Dissertation, University of Colorado. Accessed March 08, 2021.
https://scholar.colorado.edu/cven_gradetds/341.
MLA Handbook (7th Edition):
Chinnis, Darcie Alanna O'Connor. “Exploration of a Dynamic Lighting Energy Modeling Algorithm for Data Collection Support.” 2013. Web. 08 Mar 2021.
Vancouver:
Chinnis DAO. Exploration of a Dynamic Lighting Energy Modeling Algorithm for Data Collection Support. [Internet] [Doctoral dissertation]. University of Colorado; 2013. [cited 2021 Mar 08].
Available from: https://scholar.colorado.edu/cven_gradetds/341.
Council of Science Editors:
Chinnis DAO. Exploration of a Dynamic Lighting Energy Modeling Algorithm for Data Collection Support. [Doctoral Dissertation]. University of Colorado; 2013. Available from: https://scholar.colorado.edu/cven_gradetds/341
. 
Open Access Theses and Dissertations