流体机械

2014, v.42;No.501(03) 62-66

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制冷剂R1234ze在高温热泵中应用的对比研究
Investigation on Application of Refrigerant R1234ze in High-temperature Heat Pump

何永宁;夏源;金磊;杨东方;曹锋;
HE Yong-ning;XIA Yuan;JIN Lei;YANG Dong-fang;CAO Feng;Xi'an Jiaotong University;

摘要(Abstract):

对比了R1234ze、R134a、R124、R142b等工质的热物理性质,分析了几种工质在高温热泵应用中相同工况下的压比、COP、压缩机排气量、排气温度等性能参数,论述了R1234ze用作高温热泵工质的可行性及R1234ze高温热泵机组的特性。结果表明R1234ze在高温热泵75~95℃工作区间内,具有系统制热COP高、压比适中、压缩机排气温度低等特点。同时,其良好的热物性、较低的GWP值决定了其可以应用于高温热泵中。
For verify possibility of applying R1234ze in high-temperature heat pump,fundamental physical and thermodynamic properties of R1234ze,R124,R134a and R142b were listed and compared. Meanwhile,with different refrigerants,main system parameters of high-temperature heat pump,including COP,pressure ratio,compressor volume,discharge temperature and heat exchange areas with the same heat yields,were compared. Characteristics of R1234ze high-temperature heat pump system were also presented. Results indicated that in condensing temperature range of 75 ~ 95℃,high-temperature heat pump system with R1234ze has advantages on which include high heating COP,low discharge temperature and medium pressure ratio.

关键词(KeyWords): R1234ze;制冷工质;蒸汽压缩式制冷循环;高温热泵
R1234ze;vapor compression refrigeration cycle;high-temperature heat pump

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作者(Author): 何永宁;夏源;金磊;杨东方;曹锋;
HE Yong-ning;XIA Yuan;JIN Lei;YANG Dong-fang;CAO Feng;Xi'an Jiaotong University;

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