Indian Journal of Science and Technology

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Many milk coolers are presently using refrigerant R22 which has substantial ozone depleting potential along with high global warming potential. As per the commitment of Montreal and Kyoto protocol, R22 is required to be replaced by a suitable eco-friendly refrigerant and this paper explores the various options available. First the performance of 13 eco-friendly refrigerants was compared by simulating their performance with the help of CYCLE D. Then detailed study of binary and ternary mixture refrigerants has been done for selecting a Retrofit mixture for use in place of R22 in the existing milk cooler. Elucidating the performance,ODP and GWP values of refrigerants, it is clear that R1270 is best choice for replacing R22 with zero ODP and negligible GWP. Out of four mixtures, R32/R152 is best with zero ODP and low GWP.

Keywords

Refrigerant, CFC22, Retrofitting, Milk Cooler
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