Study on Alternative Refrigerants for Direct Expansion Solar Assisted Heat Pump System

摘要：

This paper reports the investigation results of the possibilities for using pure and mixed refrigerants as working fluids to replace R22 for the DX-SAHP systems. Firstly, pure refrigerants are compared in terms of COP, discharge temperature and mass flow rate. Comparison results show that R290 is the most promising alternative to R22. Secondly, two kinds of mixed refrigerants are investigated as well. It indicated that the mixed refrigerant R290/R22 with more R290 performs better than the others in terms of COP. Meanwhile, the mixed refrigerants produce relatively low discharge temperatures and proper mass flow rates can be created due to appropriate mixture in suitable mass proportion. Further investigation indicates that R290 and R290/R22 show better system performance with relatively high superheating temperatures.

关键词： direct expansion heat pump refrigerant steady state simulation

作者: Hong Li

作者单位: Department of Architectural Environment and Equipment Engineering,Yanshan University, Qin Huangdao, Hebei Province, China

会议类型: 国际会议

会议名称: 2012 International Conference on Electric Technology and Civil Engineering(2012 电子技术与土木工程国际会议 ICETCE 2012)

会议地点: 三峡

会议语种:英文

页码: 2706-2708

在线出版日期: 2012-05-18（万方平台首次上网日期，不代表论文的发表时间）