热力发电2025，Vol.54Issue(9)：46-53,8.DOI:10.19666/j.rlfd.202411250
燃煤电站抽汽驱动的热泵-Kalina循环卡诺电池及其性能评估
Heat pump-Kalina cycle Carnot battery driven by extracted steam in coal-fired power station and its performance evaluation
杨勇 1徐书德 2张祥 3周元祥 4李杨 4王思远 3朱锐 3温斌 3邹莹5
作者信息
- 1. 国能河北定州发电有限责任公司,河北 定州 073099
- 2. 浙江省能源集团有限公司,浙江 杭州 310007
- 3. 西安益通热工技术服务有限责任公司,陕西 西安 710016
- 4. 西安热工研究院有限公司,陕西 西安 710054
- 5. 西安交通大学外国语学院,陕西 西安 710049
- 折叠
摘要
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
卡诺电池/Kalina循环/热泵/热集成/热力学分析Key words
Carnot battery/Kalina cycle/heat pump/thermal integration/thermodynamic analysis引用本文复制引用
杨勇,徐书德,张祥,周元祥,李杨,王思远,朱锐,温斌,邹莹..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].热力发电,2025,54(9):46-53,8.
