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Design of a Hybrid Residential Compressed Air Energy Storage System Focusing on Its Economic Considerations

Khedmati, Amir Reza | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53868 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Saeedi, Mohammad Hassan
  7. Abstract:
  8. In recent years, energy storage systems have received widespread attention from researchers to increase the reliability of the power grid. These systems have different types that compressed air system is of special importance due to its high stored energy and long life. In this system, the surplus of electricity generated from renewable energy sources or grid electricity at low power consumption is compressed and stored in a tank. When there is a need for power consumption or peak power consumption, compressed air will generate electricity by passing through the turbine and will help the network. Large-scale type of the system requires special geographical location for air storage; for this reason, researchers have turned their attention to the small-scale type of this system for home use. The aim of the present study is to design a hybrid compressed air energy storage system with economical use for home use. For this purpose, first for two common types of thermal storage systems, functional comparison has been done in MATLAB software and then the appropriate type has been used to design a novel compressed air energy storage system based on photovoltaic thermal collectors. The storage section is modeled in EES software and coupled with the solar section in TRNSYS software. Then, parametric analysis was performed for the variables affecting its performance, in which the important role of preheating temperature of turbines in improving efficiency was proved. At last, the best scenario with 78.2% for overall efficiency and 0/234 $/kWh for life cost of energy was achieved, which is much better than the results of similar systems
  9. Keywords:
  10. Energy Storage ; Economic Analysis ; Small Scale Modeling ; Compressed Air Energy Storage (CAES) ; Photovoltaic-Thermal System ; Energy Life Cost ; Renewable Energy Resources ; Photovoltaic-Thermal Collector

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