【摘要】 阐述了离心式冷水机组的两种替代制冷剂HFC134a和HCFC123的性能,综合比较了这两种制冷剂的安全性、效率和其它一些因素。从安全性能来讲,HFC134a占有优势;在效率方面,HCFC123略高于HFC134a;由于HCFC123的ODP不为零,根据蒙特利尔议定书这一强制性条约,它将限制禁用;同时京都议定书也要求限制HFCs的排放量。最后文中结合了中国国情对HCFC123的使用进行了风险分析,认为就目前而言,HFC134a应当成为替代剂的主流。更多还原

【Abstract】 The two substitutive refrigerants HFC134a and HCFC123 in centrifugal chillers were described and the safety performance,efficiency and some other factors of the two refrigerants were synthetically compared.From safety performance aspects,HFC134a is better.From the dimension of efficiency,HCFC123 has a little better effect.Since the ODP of HCFC123 is not zero,according to the Montreal Protocol it will be forbidden in the time limit.On the other hand the emission of HFCs was confined in the Kyoto Protocol.Finally on the base of Chinese national condition the risk analysis of using HCFC123 was established.The author believes HFC134a should be the main trend substitutive refrigerant at present.更多还原