Thermodynamic analysis of novel advanced adiabatic compressed air energy storage system with variable pressure ratio

HE Qing; FU Hailun; KANG Haoqiang

doi:10.19666/j.rlfd.202004118

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Thermodynamic analysis of novel advanced adiabatic compressed air energy storage system with variable pressure ratio

更新时间：2025-09-28

- Thermodynamic analysis of novel advanced adiabatic compressed air energy storage system with variable pressure ratio
- Thermal Power Generation Vol. 49, Issue 8, Pages: 36-42(2020)
- 作者机构：
  
  华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202004118
  CLC： TK02
- Published Online：30 July 2020，
  
  Published：2020
- 稿件说明：
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HE Qing, FU Hailun, KANG Haoqiang. Thermodynamic analysis of novel advanced adiabatic compressed air energy storage system with variable pressure ratio[J]. Thermal power generation, 2020, 49(8): 36-42.
DOI：

HE Qing, FU Hailun, KANG Haoqiang. Thermodynamic analysis of novel advanced adiabatic compressed air energy storage system with variable pressure ratio[J]. Thermal power generation, 2020, 49(8): 36-42. DOI： 10.19666/j.rlfd.202004118.

摘要

为了提高先进绝热压缩空气储能(AA-CAES)系统的充放电效率

提出了新型变压比AA-CAES系统

建立了系统的热力学模型

计算了不同膨胀机组级数和不同变膨胀比运行方式下系统的热力学特性

得到了各种配置和运行方式下膨胀机组的释能时间和总输出功

以及整个系统的充放电效率等参数。结果表明

对具有4级膨胀的AA-CAES系统

变膨胀比使得膨胀机组的释能时间从3 095 s增加到5 014 s

总输出功从1.953 GJ增加到2.728 GJ

整个系统的充放电效率从45.11%提高到63.00%

变压比AA-CAES显著提高了AA-CAES系统的热力学性能。

Abstract

In order to improve the charge and discharge efficiency of advanced adiabatic compressed air energy storage(AA-CAES) system

a novel AA-CAES system with variable pressure ratio is proposed. The time for energy release

the total output work of expansion unit stages

and the charge and discharge efficiency of the whole system under various configurations and operation modes are obtained by establishing the thermodynamic model of the system and calculating the thermodynamic characteristics of the system under different expansion unit stages and different variable expansion ratio operation modes. The results show that

for the AA-CAES system with 4-level expansion

the variable expansion ratio make the time for energy release of the expansion unit stages increase from3 095 s to 5 014 s

the total output work increase from 1.953 GJ to 2.728 GJ

the charge and discharge efficiency of the whole system increase from 45.11% to 63.00%. It can be seen that the AA-CAES with variable pressure ratio can significantly improve the thermodynamic performance of the AA-CAES system.

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