A Comparative Study and Analysis for Retrofitting Of R-12 Vapour Compression Refrigeration System with Eco-Friendly Refrigerants R-507, R-407c, R404a

摘要

The Montreal Protocol has sealed the use of Halogenated Hydrocarbons; Keeping in view they affect the environment in the form of Ozone layer depletion and Global warming. Thus one of the major thrust areas is to identify substitute of Halogenated Hydrocarbons, especially CFCs. The substitute refrigerant should be eco-friendly, chemically stable and C-134a a is currently the leading alternative to CFC-12. Other promising substitutes are R-507as a binary mixture of R-143a & R-125.R-407c is a ternary mixture of R-134a, R-32 and R-125.R404a is a binary mixture of R143a & R-125a. In this paper, performance evaluation of eco-friendly alternate refrigerant R-507, R-407c for replacing CFC12 has been done and a suitable alternative refrigerant for retrofitting has been identified.