Heat pump-Kalina cycle Carnot battery driven by extracted steam in coal-fired power station and its performance evaluation

杨勇; 徐书德; 张祥; 周元祥; 李杨; 王思远; 朱锐; 温斌; 邹莹

doi:10.19666/j.rlfd.202411250

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Heat pump-Kalina cycle Carnot battery driven by extracted steam in coal-fired power station and its performance evaluation

Thermal Power Generation Vol. 54, Issue 9, Pages: 46-53(2025)

更新时间：2026-08-11

- Heat pump-Kalina cycle Carnot battery driven by extracted steam in coal-fired power station and its performance evaluation
- 作者机构：
  
  1. 国能河北定州发电有限责任公司
  2. 浙江省能源集团有限公司
  3. 西安益通热工技术服务有限责任公司
  4. 西安热工研究院有限公司
  5. 西安交通大学外国语学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202411250
  CLC： TM621;TM91
- Published：2025
- 稿件说明：
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[1]杨勇,徐书德,张祥,等.燃煤电站抽汽驱动的热泵-Kalina循环卡诺电池及其性能评估[J],2025,54(09):46-53.
[1]杨勇,徐书德,张祥,等.燃煤电站抽汽驱动的热泵-Kalina循环卡诺电池及其性能评估[J],2025,54(09):46-53. DOI： 10.19666/j.rlfd.202411250.

DOI：10.19666/j.rlfd.202411250.

摘要

卡诺电池作为一种新兴的大规模储电技术，具有成本低、容量大、不受地域限制等优点。针对放电循环效率较低抑制卡诺电池能效进一步提升的现状，结合热集成卡诺电池的热需求及Kalina循环较高的放电效率，提出了燃煤电站抽汽驱动的热泵-Kalina循环卡诺电池系统，建立了卡诺电池系统热力学模型，重点研究了储热温度、储热温差以及氨水质量分数对卡诺电池热力学性能的影响。结果表明：不同储热温差以及储热温度下，往返效率可介于44.8%～108.0%；随着氨水质量分数增大，往返效率会显著提高，但氨水质量分数超过90%，效率会急剧下降，Kalina循环接近于一元循环。因此在设计基于Kalina循环的卡诺电池时，氨水质量分数应控制在80%～90%。

Abstract

As an emerging large-scale electricity storage technology

the Carnot battery has the advantages of low cost

large capacity

and being free from geographical limitations. Aiming at the current situation that the low discharge cycle efficiency restrains further improvement of round-trip efficiency of the Carnot battery

combined with the heat demand of the thermally integrated Carnot battery and the relatively high discharge efficiency of the Kalina cycle

a heat pumped-Kalina cycle Carnot battery system driven by extraction steam of a coal-fired power station is proposed. A thermodynamic model of the Carnot battery system is established

and the influences of thermal energy storage temperature

temperature difference in thermal energy storage

and ammonia mass fraction on thermodynamic performance of the Carnot battery are mainly studied. The results show that

with different temperature differences of thermal energy storage and at different temperatures

the round-trip efficiency can reach 44.8%～108.0%. With the increase of the ammonia mass fraction

the round-trip efficiency will be significantly improved. However

when the ammonia mass fraction exceeds 90%

the efficiency will drop sharply

and the Kalina cycle is close to a one-component cycle. Therefore

when designing a Carnot battery based on the Kalina cycle

the ammonia mass fraction should be controlled within 80%～90%.

关键词

Keywords

references

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