A novel compressed air energy storage (CAES) system combined with pre-cooler and using low grade waste heat as heat source

被引：53

作者：

Chen, Long-Xiang ^{[1
]}

Hu, Peng ^{[2
]}

Sheng, Chun-Chen ^{[3
]}

Xie, Mei-Na ^{[1
]}

机构：

[1] Chinese Acad Sci, Quanzhou Inst Equipment Mfg, Haixi Inst, Jinjiang, Peoples R China

[2] Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230027, Peoples R China

[3] 16th Inst China Elect Technol Grp Corp, Hefei 230043, Peoples R China

来源：

ENERGY | 2017年 / 131卷

基金：

中国国家自然科学基金;

关键词：

Compressed air energy storage; Precooling; Energy analysis; Waste heat; GENERATION; SIMULATION; CAVERNS; PLANT;

D O I：

10.1016/j.energy.2017.05.047

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

Decreasing fuel consumption in compressed air energy storage (CAES) system is a general trend for conserving energy and protecting the environment. Waste heat recovery is an interesting technology to compact energy storage system. However, CAES system has a low thermal efficiency when using low grade waste heat as heat source directly. In this paper, an integrated energy system consisting of a CAES system and a precooling system (PC-CAES) is proposed to decrease the energy consumption of compression train in the charging process, and enhance the round trip efficiency (RTE) of the system. Air conditioner is utilized as pre-cooler to precool the inlet air of compressor and five refrigerants are investigated. The thermodynamic analysis is performed by using steady-state mathematical model and thermodynamic laws. The calculation results show that the RTE of the proposed PC-CAES system is improved by more than 3% than that of the conventional CAES system and more economical than CAES with additional compression stages. Meanwhile, a parametric analysis is also carried out to evaluate the effects of several key parameters on the system performance of two CAES systems. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：259 / 266

页数：8

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