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Performance analysis of a new compressed air energy storage system coupled with the municipal solid waste power generation systems

Author

Listed:
  • Xue, Xiaojun
  • Li, Yang
  • Liu, Shugen
  • Xu, Gang
  • Zheng, Lixing

Abstract

In order to improve the performance of the compressed air energy storage (CAES) system, a novel design is proposed: the CAES system is combined with the municipal solid waste power generation systems, including a waste incineration power generation system and a biogas power generation system. During the charging process, the feedwater and the condensate from the waste incineration power generation system are used to cool the compressed air. During the discharge process, the released compressed air is heated by the flue gas from the waste incineration power generation system, and the high-temperature compressed air works in the expander. Finally, the expanded air from the expander is fed into the combustor of the biogas power generation system, thus replacing the compressor of the gas cycle. Through the system integration, the efficiency of the CAES system is improved, and some equipment of the original CAES system is reduced. Based on the systems simulation, energy analysis, exergy analysis, economic analysis, and sensitivity analysis are performed. As a result, for the CAES subsystem, the round-trip efficiency, the energy storage density, and the exergy efficiency can reach 75.32 %, 14.10 MJ/m3, and 74.31 %. Besides, the dynamic payback period can reach 6.82 years.

Suggested Citation

  • Xue, Xiaojun & Li, Yang & Liu, Shugen & Xu, Gang & Zheng, Lixing, 2024. "Performance analysis of a new compressed air energy storage system coupled with the municipal solid waste power generation systems," Energy, Elsevier, vol. 304(C).
    • Handle: RePEc:eee:energy:v:304:y:2024:i:c:s0360544224017997
    DOI: 10.1016/j.energy.2024.132025
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