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.
出处
《流体机械》
CSCD
北大核心
2014年第3期62-66,共5页
Fluid Machinery
关键词
制冷工质
蒸汽压缩式制冷循环
高温热泵
R1234ze
R1234ze
vapor compression refrigeration cycle
high-temperature heat pump
作者简介
何永宁（1988－），男，博士生，主要从事高温水源热泵机组及螺杆压缩机相关技术研究，通讯地址：710049陕西西安市西安交通大学压缩机工程系。
