Conventional and advanced exergy analysis of large-scale adiabatic compressed air energy storage system

被引:13
|
作者
Tian, Yingnan [1 ]
Zhang, Tong [2 ]
Xie, Ningning [3 ]
Dong, Zhen [1 ]
Yu, Zeting [1 ]
Lyu, Mingxin [1 ]
Lai, Yanhua [1 ]
Xue, Xiaodai [2 ]
机构
[1] Shandong Univ, Sch Energy & Power Engn, Jinan 250061, Peoples R China
[2] Tsinghua Univ, Dept Elect Engn, State Key Lab Control & Simulat Power Syst & Gener, Beijing 100084, Peoples R China
[3] China Three Gores Corp, Sci & Technol Res Inst, Beijing 100038, Peoples R China
关键词
Adiabatic compressed air energy storage; Advanced exergy analysis; Thermodynamic analysis; Exergy destruction; UNDERWATER; TEMPERATURE;
D O I
10.1016/j.est.2022.106165
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Identifying the main sources of exergy destruction is a significant method for promoting high-efficiency oper-ation of compressed air energy storage (CAES) systems. Advanced exergy analysis is free from the limitations of traditional exergy analysis and identifies the optimization order of the components and clarifies their relation-ships. This method is significant for developing system improvement strategies for optimization. In this study, based on the actual engineering of an adiabatic compressed air energy storage (A-CAES) power plant, real, unavoidable, and hybrid thermodynamic cycles were established, and conventional and advanced exergy ana-lyses were conducted for it. The results showed that the endogenous exergy destruction of the main components was greater than the exogenous exergy destruction, implying the importance of optimizing the components. In addition, endogenous and exogenous exergy destructions indicate a highly complex relationship between the components. The avoidable exergy destruction indicated the highest potential for improvement of the third-stage heat exchanger (HEX3) contributing to 13.15 % of the total avoidable exergy destruction of the system; therefore, HEX3 has the highest optimization value. In addition, the second-stage heat exchanger (HEX2) and first-stage heat exchanger (HEX1) also exhibited higher potential for improvement.
引用
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页数:12
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