独立式液态空气储能系统压缩热利用优化研究

王新东; 李宜洪; 李博; 高健; 王俊杰

doi:10.19666/j.rlfd.202502019

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独立式液态空气储能系统压缩热利用优化研究

Thermal Power Generation Vol. 55, Issue 2, Pages: 49-57(2026)

更新时间：2026-08-07

- 独立式液态空气储能系统压缩热利用优化研究
- 作者机构：
  
  1. 中绿中科储能技术有限公司
  2. 中国绿发投资集团有限公司
  3. 中国科学院理化技术研究所
  4. 中国科学院大学,未来技术学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202502019
  CLC： TK02
- Published：2026
- 稿件说明：
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[1]王新东,李宜洪,李博,等.独立式液态空气储能系统压缩热利用优化研究[J].热力发电,2026,55(02):49-57.
[1]王新东,李宜洪,李博,等.独立式液态空气储能系统压缩热利用优化研究[J].热力发电,2026,55(02):49-57. DOI： 10.19666/j.rlfd.202502019.

DOI：10.19666/j.rlfd.202502019.

摘要

构建了一套水-油组合蓄热的独立式液态空气储能系统，并分析了系统中压缩级数、膨胀级数以及蓄热水温度对系统往返效率和压缩热利用程度的影响规律。研究结果表明：压缩级数的增加导致往返效率降低，最优压缩级数为2级；在不同压缩级数条件下，最佳膨胀级数比压缩级数多一级；在25～65℃，提高蓄热水温度能够提升系统往返效率和压缩热的利用程度，但当蓄热水温度超过65℃，系统效率不再继续提升；在最优化条件下，采用2级压缩、3级膨胀以及65℃蓄热水温的系统压缩热富余比例为0.349，往返效率达到0.622。本研究可为液态空气储能系统的压缩热利用过程优化提供理论依据。

Abstract

A stand-alone liquid air energy storage(LAES) system with a water-oil combined heat storage system was constructed

and the effects of compression stages

expansion stages

and heat-storage water temperature on the system's round-trip efficiency and compression heat utilization were analyzed. The results indicate that increasing the number of compression stages will reduce the round-trip efficiency

and the optimal number of compression stages is two. The optimal number of expansion stages is one more than the number of compression stages. Within the temperature range of 25～65 ℃

increasing the heat-storage water temperature can improve the system's roundtrip efficiency and the utilization degree of compression heat. However

the system efficiency will no longer increase when the temperature of the heat-storage water exceeds 65 ℃. Under optimal conditions

the system with two compression stages

three expansion stages

and a heat-storage water temperature of 65 ℃ has a compression heat surplus ratio of 0.349 and a round-trip efficiency of 0.622. The study provides a theoretical reference for optimizing the compression heat utilization process in LAES systems.

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