集成电加热的热泵储电系统热力性能分析

闫宇; 闫学文; 邵明轩; 戴天乐; 辛团团; 许诚

doi:10.19666/j.rlfd.202505079

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集成电加热的热泵储电系统热力性能分析

热力发电 2026年55卷第2期页码：13-22

储能材料、装置及系统 | 更新时间：2026-08-07

- 集成电加热的热泵储电系统热力性能分析
- 集成电加热的热泵储电系统热力性能分析
- 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：
  
  中央高校青年教师科研创新能力支持项目（ZYGXONJSKYCXNLZCXM-E5）~~
- DOI：10.19666/j.rlfd.202505079
  中图分类号： TM91;TM924.2
- 纸质出版：2026
- 稿件说明：
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[1]闫宇,闫学文,邵明轩,等.集成电加热的热泵储电系统热力性能分析[J].热力发电,2026,55(02):13-22.
[1]闫宇,闫学文,邵明轩,等.集成电加热的热泵储电系统热力性能分析[J].热力发电,2026,55(02):13-22. DOI： 10.19666/j.rlfd.202505079.

DOI：10.19666/j.rlfd.202505079.

摘要

基于能量分析和㶲分析方法，综合考虑压缩、膨胀和换热过程的不可逆损失，比较了常规热泵储电(basic pumped thermal electricity storage

BC-PTES)系统和集成电加热器的热泵储电(electric heater-integrated pumped thermal electricity storage

EH-PTES)系统在设计工况下的性能指标以及不可逆损失分布特性，并探讨了关键参数对EH-PTES系统性能的影响。结果表明：设计工况下BC-PTES系统与EH-PTES系统均在放电过程透平中产生较大㶲损失，分别为456、455 kW;EH-PTES系统具有较高的往返效率(41.50%)与储能密度(54.1 kW·h/m

)，其中电加热器㶲效率为63%。存在最佳放电过程压缩机出口压力使放电过程㶲损失最小，系统往返效率最高。对于EH-PTES系统，在最佳放电压力下，系统往返效率随电加热器出口温度升高呈先降低后增加的趋势，随压缩机出口温度升高呈单调递增趋势。当压缩机出口温度为550℃、电加热器出口温度由600℃升至1 000℃时，EH-PTES系统往返效率由45.03%先降低至44.81%，随后增加至45.75%；电加热器出口温度为850℃、压缩机出口温度由400℃升至550℃时，系统往返效率由39.17%单调递增至45.14%；系统往返效率对电加热器出口温度的敏感性小于压缩机出口温度。集成电加热器大幅提高了PTES系统的储能密度，在电加热器出口温度为1 000℃时，EH-PTES系统储能密度高达113.9 kW·h/m

。研究结果可为热泵储电系统的优化设计提供参考。

Abstract

Using energy analysis and exergy analysis methods

and considering the irreversible losses in the compression

expansion

and heat-exchange processes comprehensively

the performance indicators and irreversible loss distribution characteristics between a basic PTES(BC-PTES) system and an electric heater-integrated PTES(EH-PTES) system under defined operational conditions are compared

and the influence of key parameters on the EH-PTES system's performance is investigated. The results indicate that both the BC-PTES and EH-PTES systems generate large exergy losses in the turbine during the discharge

with values of 456 kW and 455 kW respectively. The EH-PTES system demonstrates higher round-trip efficiency(41.50%) and energy storage density(54.1 kW·h/m³)

with the exergy efficiency of the electric heater at 63%. Parameter analysis reveals that there exists an optimal discharge-phase compressor outlet pressure which can minimize the exergy loss and maximize system round-trip efficiency. For the EH-PTES system

at the optimal discharge pressure

the round-trip efficiency of the EH-PTES system initially decreases and then increases with the rising electric heater outlet temperature

and it increases with the compressor outlet temperature. For example

when the compressor outlet temperature is 550 ℃ and the electric heater outlet temperature increases from 600 ℃ to 1 000 ℃

the EH-PTES system round-trip efficiency decreases from 45.03% to 44.81% at first

and subsequently increases to 45.75%. When the electric heater outlet temperature is 850 ℃ and the compressor outlet temperature increases from 400 ℃ to 550 ℃

the system round-trip efficiency increases from 39.17% to 45.14%. Notably

the round-trip efficiency is less sensitive to the electric heater outlet temperature than to the compressor outlet temperature. By integrating electric heaters

the energy storage density can be substantially enhanced

reaching 113.9 kW·h/m³ at an electric heater outlet temperature of 1 000 ℃. These findings provide critical insights for optimizing the PTES system design.

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