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

作　　者：何永宁[1] 夏源[1] 金磊[1] 杨东方[1] 曹锋[1] 

机构地区：[1]西安交通大学,陕西西安710049

出　　处：《流体机械》2014年第3期62-66,共5页Fluid Machinery

摘　　要：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：制冷工质 蒸汽压缩式制冷循环 高温热泵 

分 类 号：TH12[机械工程—机械设计及理论] TB61[一般工业技术—制冷工程]