何青;郝银萍;刘文毅;

• 1:华北电力大学能源动力与机械工程学院

摘要(Abstract)：

为实现储能系统内余热的回收再利用,采用热泵作为热量存储系统,对基于地下储气室的跨临界压缩二氧化碳储能系统(Trans-critical compressed carbon dioxide energy storage,TC-CCES)的压缩热进行回收再热利用,运用热力学定律对该储能系统主要设备进行热力分析及敏感性分析。考虑蓄热介质热物性的限制,研究不同蓄热介质构成的储能系统对系统性能方面的影响。研究表明系统的循环效率、储能效率以及储热效率分别为66%,58.41%,46.11%。在该储能系统工作过程中,随着压缩机和膨胀透平绝热效率的增大,储能系统循环效率和储能效率呈逐渐增大趋势,可通过提高压缩机和透平绝热效率的方法提高系统运行性能。研究还证实了以水为蓄热介质的储能系统效率最高,系统性能最好。

关键词(KeyWords)： 跨临界压缩二氧化碳;热泵;蓄热介质;热力分析;敏感性分析

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划资助项目(2017YFB0903601)

作者(Author): 何青;郝银萍;刘文毅;

Email:

DOI:

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