Compressed Air Energy Storage by Ting David S. -K.;Stagner Jacqueline A.;

Author:Ting, David S. -K.;Stagner, Jacqueline A.;
Language: eng
Format: epub
Publisher: Institution of Engineering & Technology
Published: 2021-09-28T16:00:00+00:00

1Universidad Politécnica de Madrid, ETSI Minas y Energía, Madrid, Spain

Chapter 8

Compressed air energy storage system dynamic modelling and simulation

Jieren Ke1, Wei He1, Mark Dooner1, Xing Luo1 and Jihong Wang1

Trigenerative compressed air energy storage (T-CAES) capitalizes on the heat of the compression process, something that is often wasted in more conventional compressed air energy storage (CAES) approaches. A T-CAES system with a 4 kW compressor and 2 kW turbine is thermodynamically analyzed in this study. Exergy analyses performed on each component in the system identify specific areas for improvement. It is found that, under actual conditions, more than half of the total exergy destruction is caused by the accumulator and about a quarter of the destruction is caused by the pressure regulator and turbine. Further, the pressure regulator, accumulator, and turbine offer 66%, 27%, and 32% of individual component recoverable exergies, respectively. These recoveries can improve the overall exergy efficiency of the system by 35%.

Keywords: Compressed air energy storage; multi-physical system simulation; data-driven modelling; model selection

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