三元混合物R22/R152a/R134a——CFC-12替代的又一选择

ANOTHER CHOICE FOR CFC-12——TERNARY BLEND R22/Rl52a/Rl34a

一、前言 R12的替代有两种,即灌注式替代和未来替代.前者要求对现有冰箱的结构和参数不作或少作变动;后者不受此限。本文仅限于灌注式替代的研究。 较优秀的R12纯质替代物有R134a和R152a,但R134a能耗较高,R152a具有中等可燃。二元混合物R22,R142h和R22/R152a虽一定程度上缓解了R134a、R152a,

Focused on the substitution of R12 in refrigerator, this article compared the performances of refrigeration cycle of pure substituts R134a, R152a, R142b, R22, R124, binary mixture substituts R22/R152a, R22/R142b, ternary mixture substituts R22/R152a/R124, R22/R152a/R142b, R22/R152a/R134a; and proposed a more superior ternary mixture substitute R22/R152a/R134a after analying Du Pont's patented ternary mixture R22/R152a/R124.