• Rohit Sijariya
• Nitin Dubey
• Akhilesh Shakya

The Montreal protocol and Kyoto protocol underlined the need of substitution of CFCs and HCFCs due to their adverse impact on atmospheric ozone layer which protects earth from U.V. rays. The CFCs have been entirely ruled out since 1995 and a long term basis HCFCs must be replaced by 2020. All this events motivated HFC refrigerants which are harmless to ozone layer. In this paper thermodynamic analysis of cascade refrigeration system has been done using two different refrigerant pairs R23-R290 and R23-R600A. Effect of various operating parameters i.e. evaporator temperature, condenser temperature, temperature difference in cascade condenser and low temperature cycle condenser temperature on performance parameters viz. COP and exergetic efficiency have been studied. Thermodynamic analysis shows that out of two refrigerant pairs R23-R290 and R23-R600A, the COP of R23-R600A refrigerant pair is highest.

Thermodynamic analysis, cascade refrigeration system, COP, exergetic efficiency.

"Performance and thermodynamic analysis of different refrigerants operated cascade refrigeration system", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.471-485, December-2018, Available :http://www.jetir.org/papers/JETIR1812760.pdf

"Performance and thermodynamic analysis of different refrigerants operated cascade refrigeration system", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp471-485, December-2018, Available at : http://www.jetir.org/papers/JETIR1812760.pdf