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You searched for +publisher:"Mississippi State University" +contributor:("Alta Knizley"). Showing records 1 – 3 of 3 total matches.

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Mississippi State University

1. Carey, Ashley Suzanne. Improved understanding of ultra-high performance concrete via mechanical property testing of mixes with varying ingredients and proportions.

Degree: MS, Mechanical Engineering, 2019, Mississippi State University

This thesis evaluated constituent proportions on mechanical and thermal properties of ultra-high performance concrete. This thesis assessed how fine aggregates and fibers at varying proportions enhance cement paste and can improve its mechanical properties to a desired compressive strength, elastic modulus, or tensile strength. Approximately 400 specimens, comprised of 22 different mixtures, were tested for mechanical properties within four curing regimes. Thermal experiments were also performed on select specimens. These experiments aimed to add to the body of knowledge found during literature review which showed these efforts have drawn conclusions by varying one ingredient at a time, whereas this thesis systematically varied multiple ingredients. Results showed compressive strength to be due to synergistic relationships between cement paste, fine aggregates, and steel fibers where absence of any ingredient reduced strength. Tensile strength and elastic modulus were dominated by one ingredient, and steel fibers were shown as promising to lessen thermal gradients. Advisors/Committee Members: Alta Knizley (chair), Isaac L. Howard (chair), Matthew W. Priddy (committee member).

Subjects/Keywords: optimization; proportioning; ultra-high performance concrete

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APA (6th Edition):

Carey, A. S. (2019). Improved understanding of ultra-high performance concrete via mechanical property testing of mixes with varying ingredients and proportions. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-02232019-143114/ ;

Chicago Manual of Style (16th Edition):

Carey, Ashley Suzanne. “Improved understanding of ultra-high performance concrete via mechanical property testing of mixes with varying ingredients and proportions.” 2019. Masters Thesis, Mississippi State University. Accessed July 19, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-02232019-143114/ ;.

MLA Handbook (7th Edition):

Carey, Ashley Suzanne. “Improved understanding of ultra-high performance concrete via mechanical property testing of mixes with varying ingredients and proportions.” 2019. Web. 19 Jul 2019.

Vancouver:

Carey AS. Improved understanding of ultra-high performance concrete via mechanical property testing of mixes with varying ingredients and proportions. [Internet] [Masters thesis]. Mississippi State University; 2019. [cited 2019 Jul 19]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-02232019-143114/ ;.

Council of Science Editors:

Carey AS. Improved understanding of ultra-high performance concrete via mechanical property testing of mixes with varying ingredients and proportions. [Masters Thesis]. Mississippi State University; 2019. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-02232019-143114/ ;


Mississippi State University

2. Zhang, Jian. Techno-economic analysis and optimization of distributed energy systems.

Degree: PhD, Mechanical Engineering, 2018, Mississippi State University

As a promising approach for sustainable development, distributed energy systems have receive increasing attention worldwide and have become a key topic explored by researchers in the areas of building energy systems and smart grid. In line with this research trend, this dissertation presents a techno-economic analysis and optimization of distributed energy systems including combined heat and power (CHP), photovoltaics (PV), battery energy storage (BES), and thermal energy storage (TES) for commercial buildings. First, the techno-economic performance of the CHP system is analyzed and evaluated for four building types including hospital, large office, large hotel, and secondary school, located in different U.S. regions. The energy consumption of each building is obtained by EnergyPlus simulation software. The simulation models of CHP system are established for each building type. From the simulation results, the payback period (PBP) of the CHP system in different locations is calculated. The parameters that have an influence on the PBP of the CHP system are analyzed. Second, PV system and integrated PV and BES (PV-BES) system are investigated for several commercial building types, respectively. The effects of the variation in key parameters, such as PV system capacity, capital cost of PV, sell back ratio, battery capacity, and capital cost of battery, on the performance of PV and/or PV-BES system are explored. Finally, subsystems in previous chapters (CHP, PV, and BES) along with TES system are integrated together based on a proposed control strategy to meet the electric and thermal energy demand of commercial buildings (i.e., hospital and large hotel). A multi-objective particle swarm optimization (PSO) is conducted to determine the optimal size of each subsystem with the objective to minimize the payback period and maximize the reduction of carbon dioxide emissions. The results reveal how the key factors affect the performance of distributed energy system and demonstrate the proposed optimization can be effectively utilized to obtain an optimized design of distributed energy systems that can get a tradeoff between the environmental and economic impacts for different buildings. Advisors/Committee Members: Heejin Cho (committee member), Rogelio Luck (committee member), Pedro J. Mago (committee member), Alta Knizley (committee member).

Subjects/Keywords: payback period; multi-objective optimization; distributed energy systems; Techno-economic analysis

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APA (6th Edition):

Zhang, J. (2018). Techno-economic analysis and optimization of distributed energy systems. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-06222018-180048/ ;

Chicago Manual of Style (16th Edition):

Zhang, Jian. “Techno-economic analysis and optimization of distributed energy systems.” 2018. Doctoral Dissertation, Mississippi State University. Accessed July 19, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-06222018-180048/ ;.

MLA Handbook (7th Edition):

Zhang, Jian. “Techno-economic analysis and optimization of distributed energy systems.” 2018. Web. 19 Jul 2019.

Vancouver:

Zhang J. Techno-economic analysis and optimization of distributed energy systems. [Internet] [Doctoral dissertation]. Mississippi State University; 2018. [cited 2019 Jul 19]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06222018-180048/ ;.

Council of Science Editors:

Zhang J. Techno-economic analysis and optimization of distributed energy systems. [Doctoral Dissertation]. Mississippi State University; 2018. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06222018-180048/ ;

3. Warren, Edward Harrison Randall. Performance evaluation of a power generation unit-organic Rankine cycle system with electric energy storage.

Degree: MS, Mechanical Engineering, 2017, Mississippi State University

This research proposes the use of electric energy storage (EES) in conjunction with a power generation unit organic Rankine cycle system (PGU-ORC). The EES is used when available so that continuous operation of the PGU is not required. The potential of the PGU-ORC-EES systems performance is evaluated in terms of operational cost, primary energy consumption (PEC), and carbon dioxide emissions (CDE) from simulations of a restaurant building in twelve U.S. locations with different climate conditions. The performance of the proposed system is compared to a conventional system. Results indicate that the EES addition to the PGU-ORC system is beneficial for most locations. Ratios between electricity and fuel cost, CDE conversion factors, and PEC conversion factors are used to estimate potential performance benefits. The effect of the EES size and the capital cost available are also analyzed. Advisors/Committee Members: Dr. Heejin Cho (committee member), Dr. Alta Knizley (committee member), Dr. Pedro J. Mago (chair).

Subjects/Keywords: primary energy reduction; emissions reduction; cost reduction; battery; CHP

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Warren, E. H. R. (2017). Performance evaluation of a power generation unit-organic Rankine cycle system with electric energy storage. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03212017-164003/ ;

Chicago Manual of Style (16th Edition):

Warren, Edward Harrison Randall. “Performance evaluation of a power generation unit-organic Rankine cycle system with electric energy storage.” 2017. Masters Thesis, Mississippi State University. Accessed July 19, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03212017-164003/ ;.

MLA Handbook (7th Edition):

Warren, Edward Harrison Randall. “Performance evaluation of a power generation unit-organic Rankine cycle system with electric energy storage.” 2017. Web. 19 Jul 2019.

Vancouver:

Warren EHR. Performance evaluation of a power generation unit-organic Rankine cycle system with electric energy storage. [Internet] [Masters thesis]. Mississippi State University; 2017. [cited 2019 Jul 19]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03212017-164003/ ;.

Council of Science Editors:

Warren EHR. Performance evaluation of a power generation unit-organic Rankine cycle system with electric energy storage. [Masters Thesis]. Mississippi State University; 2017. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03212017-164003/ ;

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