Analysis of the influence of the choice of refrigerating agent on the energy characteristics of a rotary-plate compressor operating in the field of wet steam of an air conditioning system

The paper presents an analysis of the influence of the choice of refrigerating agent on the energy characteristics of a compressor operating in the field of wet steam. The following refrigerating agents are considered as working media: R134a, R600a, R404a, R410a and R22. The calculation results showed that the energy performance of a compressor operating in the field of wet steam significantly depends on the thermophysical and thermodynamic parameters of refrigerants. Thus, when considering the operating process of a rotary-plate compressor operating in the field of wet steam, with the same initial data on different refrigerants with a decrease in the initial degree of dryness from 0.95 to 0.8, the supply coefficient for R410a increased by 11 %; for R404a — by 13 %; for R22 — by 9 %; for R134a — by 12 %; for R600a — by 10 %. At the same time, the indicator adiabatic efficiency with a decrease in the initial degree of dryness from 0.95 to 0.8 for R410a and R134a increased by 22 %; for R404a and R22 — by 21 %; for R600a — by 14 %. A decrease in the initial degree of dryness from 0.95 to 0.8 leads to a loss of cooling capacity for R410a by 24 %; for freon R22 — by 14 %; for freons R404a and R134a — by 22 %; for freon R600a — by 17 %.
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