含R227ea的混合制冷剂替代R22研究  

Study on R227ea mixtures in replacement of R22

作　　者：王兆华[1] 沈永年[1] 宋世亮[1] 

机构地区：[1]浙江大学制冷及低温研究所,浙江杭州310027

出　　处：《能源工程》2005年第2期35-39,共5页Energy Engineering

摘　　要：由于R410,R407系列混合制冷剂在替代R22方面的不足,更多新型的制冷剂列入了研究。R227ea具有良好的环境性能,最典型的特点是具有很好的阻燃性。文章对含R227ea各种混合物进行了理论计算和比较,并对其安全性进行了分析。计算结果表明,混合物R32/R134a/R227ea及R32/R125/R227ea不论是COP还是Qv值,都能和R22相匹配,而且优于R410A的最大特点是其冷凝压力大大降低,甚至低于R22,非常有利于原装置替代。More novel refrigerants is studied because of the shortage of R410 and R407 series in replace projects of R22 system. R227ea is a new friendly work fluid and the greatest character is its excellent retardancy.The properties of some R227ea mixture is calculated and compared, security is also seriously considered at last. The results show that R32/R134a/R227ea and R32/R125/R227ea are comparable to R22 at value of COP and Qv. Moreover, the obvious superiority to R410A is that its condensation pressure is greatly reduced and even less than that of R22 which give this mixture much more advantage in replacement.

关 键 词：R22 混合物 工质 替代工质 

分 类 号：TB612[一般工业技术—制冷工程]