王妍,王洋,吕凯,郑郝,金森,俞骏,邹莹,马汀山

• 1:西安热工研究院有限公司
• 2:西安西热节能技术有限公司
• 3:中国华能集团有限公司
• 4:西安交通大学外语学院

摘要(Abstract)：

煤电机组耦合储能系统可以提升机组的调峰能力。为提高热电联产机组的热电解耦能力，提出一种火电厂热电联产机组与液态CO_2储能耦合系统。该系统利用凝结水收集储能过程中CO_2压缩热，并与供热抽汽共同向用户供热，同时利用供热抽汽预热释能过程中膨胀机入口CO_2。基于建立的系统热力学模型，以耦合系统热效率、?效率和储能系统电-电效率为评价指标，开展了系统热力性能分析。敏感性分析结果表明：增大膨胀机入口温度和释能压力都可以获得更高的系统?效率和电-电效率；增大储能压力可以获得更高的系统热效率，?效率则先升高后降低。在设定参数下对相应CO_2储能系统进行参数优化。结果表明：当储能压力约为10.5 MPa、释能压力约为18.0 MPa时，耦合系统取得最优?效率为64.92%。

关键词(KeyWords)： 热电联产;液态CO_2储能;热力性能分析;参数优化

Abstract:

Keywords:

基金项目(Foundation): 中国华能集团有限公司总部科技项目（HNKJ21-H59）~~

作者(Author): 王妍,王洋,吕凯,郑郝,金森,俞骏,邹莹,马汀山

DOI: 10.19666/j.rlfd.202304059

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