Volume 36: Intelligent Energy Solutions for Resilient Urban Systems

Performance of an above-ground compressed air energy storage Yao Zhang, Junwei Liu, Yilun Zhang, Zhan Liu, Chuanqi Su, Xiaohu Yang

Abstract

Compressed air energy storage technology has become a crucial mechanism to realize large-scale power generation from renewable energy. This essay proposes an above-ground compressed air energy storage and the thermo-economic performance are analyzed. The advantages of discharge pressure and mechanical efficiency have positive effects on round-trip efficiency of the system. Levelized Cost of Storage has a lowest value about 0.173 $/kWh as varying discharge pressure and mechanical efficiency. At the same time, internal rate of return has peak values as varying discharge pressure and mechanical efficiency. The thermoeconomic performance of the system is linearly related with the pressure loss of the heat exchanger. When the charging pressure is 10MPa and the discharge pressure is 3.5MPa, the system has the best performance.

Keywords above-ground compressed air energy storage system, renewable energy, thermo-economic analysis