摘要
制冷剂是蒸气压缩循环中必不可少的工作流体,氢氟烷烃类化合物是目前制冷、空调和热泵设备中的主要制冷剂,但该类制冷剂会引起全球变暖等问题,因此亟需开发应用性能相似、环境性能友好的新型制冷剂.介绍了不同制冷剂在-100～200℃蒸气压缩循环应用场景中的使用现状,并综述了具有前景的低GWP制冷剂替代方案研究进展;在此基础上,对HFO-1234yf、HFO-1234ze(E)、HFO-1234ze(Z)、HCFO-1233zd(E)、HFO-1336mzz(Z)5 种低GWP 制冷剂在实际应用系统中的最新研究及关键问题进行总结.
Abstract
A refrigerant is an essential working fluid in a vapor-compression refrigeration cycle.Hydrofluorocarbons are currently used as refrigerants in refrigeration,air-conditioning,and heat pump systems and are potent greenhouse gases.Thus,replacement refrigerants with high thermal performances and low environmental impacts must be identified.This paper presents a comprehensive review of the refrigerants in different vapor-compression cycle applications covering the temperature range from-100℃ to 200℃.The most promising low-GWP alternative is proposed.Moreover,five refrigerants,including HFO-1234yf,HFO-1234ze(E),HFO-1234ze(Z),HCFO-1233zd(E),and HFO-1336mzz(Z),for application in vapor compression equipment,are summarized.
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