采用非共沸工质机械过冷跨临界CO2热泵供暖性能分析

TB61+1%TQ051.5; 本文提出采用非共沸工质的机械过冷跨临界CO2热泵供暖系统,并建立系统热力学模型,与采用纯质的机械过冷跨临界CO2热泵系统进行对比.结果表明:在环境温度为-12℃、用户供回水温度为65/40℃条件下,采用大温度滑移非共沸工质R1234ze(E)/R601(60/40)时,系统COP高达2.45,相对采用纯质最高提升13.82％.采用非共沸工质可有效降低系统排气压力并获得较大过冷度,减小节流不可逆损失.使用R290/R601(70/30)时,最优排气压力可降低27.85％.非共沸工质的使用可有效改善过冷过程的温度匹配,使用R1234ze(E)/R601(60/40)...

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Published in制冷学报 Vol. 42; no. 6; pp. 51 - 58
Main Authors 代宝民, 张鹏, 刘圣春, 王铭慧, 孙悦桐, 王嘉豪, 徐田雅慧, 肖鹏
Format Journal Article
LanguageChinese
Published 天津商业大学 天津市制冷技术重点实验室 天津 300134%天津市丹华宏业制冷技术有限公司 天津 300354 01.12.2021
Subjects
供暖;热泵;机械过冷;温度匹配;非共沸工质;CO2
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ISSN0253-4339
DOI10.3969/j.issn.0253-4339.2021.06.051

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Abstract TB61+1%TQ051.5; 本文提出采用非共沸工质的机械过冷跨临界CO2热泵供暖系统,并建立系统热力学模型,与采用纯质的机械过冷跨临界CO2热泵系统进行对比.结果表明:在环境温度为-12℃、用户供回水温度为65/40℃条件下,采用大温度滑移非共沸工质R1234ze(E)/R601(60/40)时,系统COP高达2.45,相对采用纯质最高提升13.82％.采用非共沸工质可有效降低系统排气压力并获得较大过冷度,减小节流不可逆损失.使用R290/R601(70/30)时,最优排气压力可降低27.85％.非共沸工质的使用可有效改善过冷过程的温度匹配,使用R1234ze(E)/R601(60/40)时系统火用效率相对纯质最高提升14.09％.较大的温度滑移及合理的温焓曲线凹凸性是机械过冷CO2热泵系统非共沸工质选取的两个重要原则,推荐选用R1234ze(E)/R601(60/40).
AbstractList TB61+1%TQ051.5; 本文提出采用非共沸工质的机械过冷跨临界CO2热泵供暖系统,并建立系统热力学模型,与采用纯质的机械过冷跨临界CO2热泵系统进行对比.结果表明:在环境温度为-12℃、用户供回水温度为65/40℃条件下,采用大温度滑移非共沸工质R1234ze(E)/R601(60/40)时,系统COP高达2.45,相对采用纯质最高提升13.82％.采用非共沸工质可有效降低系统排气压力并获得较大过冷度,减小节流不可逆损失.使用R290/R601(70/30)时,最优排气压力可降低27.85％.非共沸工质的使用可有效改善过冷过程的温度匹配,使用R1234ze(E)/R601(60/40)时系统火用效率相对纯质最高提升14.09％.较大的温度滑移及合理的温焓曲线凹凸性是机械过冷CO2热泵系统非共沸工质选取的两个重要原则,推荐选用R1234ze(E)/R601(60/40).
Author 孙悦桐
王嘉豪
王铭慧
张鹏
代宝民
刘圣春
徐田雅慧
肖鹏
AuthorAffiliation 天津商业大学 天津市制冷技术重点实验室 天津 300134%天津市丹华宏业制冷技术有限公司 天津 300354
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Author_FL Wang Jiahao
Sun Yuetong
Xu Tianyahui
Wang Minghui
Zhang Peng
Liu Shengchun
Dai Baomin
Xiao Peng
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Keywords 供暖;热泵;机械过冷;温度匹配;非共沸工质;CO2
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Title 采用非共沸工质机械过冷跨临界CO2热泵供暖性能分析
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