Conventional and advanced exergy analysis of a grid connected underwater compressed air energy storage facility

2019 ◽  
Vol 242 ◽  
pp. 1198-1208 ◽  
Author(s):  
Mehdi Ebrahimi ◽  
Rupp Carriveau ◽  
David S.-K. Ting ◽  
Andrew McGillis
Keyword(s):  
Energy Storage ◽  
Exergy Analysis ◽  
Compressed Air ◽  
Storage Facility ◽  
Compressed Air Energy Storage

Compressed Air Energy Storage System Exergy Analysis and its Combined Operation with Nuclear Power Plants

2013 ◽  
Vol 448-453 ◽  
pp. 2786-2789 ◽  
Author(s):  
Jin Li ◽  
Chu Fu Li ◽  
Yan Xia Zhang ◽  
Hui Guo Yue
Keyword(s):  
Energy Storage ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Exergy Analysis ◽  
Compressed Air ◽  
Air Cooling ◽  
Compressed Air Energy Storage ◽  
Tracking Mode ◽  
Combined Operation

Nuclear plants are facing more and more peaking pressure, and combined operation with compressed air energy storage (CAES) systems is an effective approach to improve its peaking capacity. This work first simulates and conducts the exergy analysis for the CAES system. The results show that exergy efficiency of the CAES system is about 51.7%, as well as the exergy loss are primary in the fuel combustion and compressed air cooling processes, accounted for 25.4% and 11.3% of total exergy, respectively. Subsequently, three combined operation modes between CAES system and nuclear power plants for power grid peaking are investigated, which shows that three section tracking mode and incomplete tracking mode can achieve the balance between peaking effects and peaking cost.

Exergy analysis of a small-scale trigenerative compressed air energy storage system

2021 ◽  
pp. 193-226
Author(s):  
Raghuveera Sai Sarath Dittakavi ◽  
David S-K. Ting ◽  
Rupp Carriveau ◽  
Mehdi Ebrahimi
Keyword(s):  
Energy Storage ◽  
Exergy Analysis ◽  
Storage System ◽  
Energy Storage System ◽  
Compressed Air ◽  
Small Scale ◽  
Compressed Air Energy Storage

Comparative Study of Various Constant-Pressure Compressed Air Energy Storage Systems Based on Energy and Exergy Analysis

2020 ◽  
Vol 143 (5) ◽  
Author(s):  
Youssef Mazloum ◽  
Haytham Sayah ◽  
Maroun Nemer
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Exergy Analysis ◽  
Constant Pressure ◽  
Storage Systems ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Storage Medium ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis

Abstract The balance between supply and demand for electricity is mainly disrupted by the growing contribution of renewable energy sources to the electrical grid since these sources are intermittent by nature. Therefore, the energy storage systems, mainly those of considerable size, become essential to restore the electricity balance. The compressed air energy storage (CAES) system is one of the mature technologies used to store electricity on a large scale. Therefore, this article discusses the energy and exergy analysis of different configurations of a constant-pressure CAES system to improve its overall efficiency and energy density. The exergy efficiency of our basic adiabatic configuration using water as thermal storage medium is 56.4% and the energy density is 12.17 kWh/m3. The results show that the CAES system using a packed bed of quartzite rock as thermal storage medium has the best efficiency (67.2%) and energy density (17 kWh/m3) among adiabatic systems. The diabatic CAES systems could have a net efficiency up to 70.1% and an energy density up to 31.95 kWh/m3 by using combustion chambers. Finally, the waste heat recovery from other installations such as a gas turbine power plant has the potential to improve the energy density to 20.53 kWh/m3 without using fossil fuel sources.

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