Thermodynamic performance analysis, assessment and comparison of an advanced trigenerative compressed air energy storage system under different operation strategies

Runhua Jiang, Frank G.F. Qin, Baiman Chen, Xiaoping Yang, Huibin Yin and Yongjun Xu

Energy, 2019, vol. 186, issue C

Abstract: Trigenerative compressed air energy storage (T-CAES) system, placed to energy demand, can supply power, heat and cooling load to users simultaneously. In order to improve the performance of T-CAES system, an advanced T-CAES system is proposed in this paper, in which a burner is added before turbine to further heat turbine inlet air. In order to cope with the variation of energy demand, three operation strategies of turbine considering off-design condition is presented to control output power of the T-CAES system: turbine inlet mass flow rate of air control (TIM), turbine inlet pressure control (TIP) and turbine inlet temperature control (TIT). Thermodynamic performance analysis in design condition of the proposed T-CAES system has been carried out, and off-design performance analysis and comparison of the T-CAES system under different operation strategies have been investigated. Comparing with conventional T-CAES, the total consumed power of the proposed T-CAES system is a 495.0 kW decrease, and the power efficiency improves 1.2%. The turbine output power and assessment indicators should be both taken account to determine the best choice of operation strategy. This research may provide a guide line for system integration and operation strategy of T-CAES system under off-design condition to improve thermodynamic performance.

Keywords: Compressed air energy storage; Trigenerative; Off-design; Operation strategies; Assessment (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:186:y:2019:i:c:s0360544219315348

DOI: 10.1016/j.energy.2019.115862

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