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Comparative analysis of the efficiency of refrigeration machine cycles

DOI: 10.17586/1606-4313-2021-20-1-12-21
UDC 621.564; 621.565

Comparative analysis of the efficiency of refrigeration machine cycles

Khryokin Anton S., Igor V. Baranov

For citation: Khryokin A.S., Baranov I.V. Comparative analysis of the efficiency of refrigeration machine cycles. Journal of International Academy of Refrigeration. 2021. No 1. p. 12-21. DOI: 10.17586/1606-4313-2021-20-1-12-21

Abstract
On the basis of available date on the use of refrigeration plants with conventional artificial refrigerants, the article presents recommendations on CO2 use when designing refrigerant plants to operate under various environmental conditions, effective in terms of their thermal, energetic, and performance characteristics. A comparative analysis of the cycle indicators of refrigerating machines using various refrigerants as the working substance is presented. The comparison is carried out taking into account the type of cold supply facility, the temperature levels of cold consumption and the external conditions of heat removal to the environment. The advantages of using natural refrigerant R744 in the cycles of the lower stage of refrigerating machines with semi-hermetic compressors are justified.

Keywords: transcritical cycle, ozone-depleting potential, global warming potential, natural refrigerant, conventional refrigerants, carbon dioxide, refrigeration plant, cooling capacity, exergetic analysis.

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