An Overview of Alternative Refrigerants for R-22

Selahattin Göktun

İ.T.Ü. Maritime Faculty,
Department of Marine Engineering 34940 Tuzla, Istanbul, TURKEY
e-mail: selogoktun@yahoo.com

Abstract

An overview of newly developed blends as substitutes for R-22 is presented. Comparisons are made in terms of ecological and thermophysical properties for blends. Seven blends (R-410A, R-407C, R-32/13a, R-32/227ea, R-23/32/125, R-32/125/152a and R-32/125/134a/143a) are promising alternatives to R-22 for pack-aged and engineering systems.