Development of the Working Process Simplified Mathematical Model of the Wet Steam Low-Speed Piston Compressor for the Refrigeration Units

Abstract

The paper presents a mathematical model for computing the working process in the wet steam region of the low-speed piston refrigeration compressor stage. It is used to study the working process duration influence on efficiency of the refrigeration cycle and the compressor integral energy characteristics. The R134a refrigerant is accepted as the working fluid. Methodology in calculating the compressor working processes in the wet steam region is based on three main equations: first law of thermodynamics, Clapeyron --- Clausius equation and equation of the real gas state. A special feature of the developed mathematical model lies in creation of the differential equation system describing alterations in temperature, pressure and dryness degree in the working cavity of a low-speed piston refrigeration compressor stage taking into account the Clapeyron --- Clausius equation. Results of the refrigeration cycle computation showed that efficiency of a refrigerator using the low-speed piston compressor stage operating in the wet steam region would increase the system refrigeration coefficient by 2 times by reducing the indicator power by 2 times, as well as reduce the condenser heat load by ~ 40 %

Please cite this article in English as:

Sadvakasov D.Kh., Raykovskiy N.A., Chernov G.I., et at. Development of the working process simplified mathematical model of the wet steam low-speed piston compressor for the refrigeration units. Herald of the Bauman Moscow State Technical University, Series Mechanical Engineering, 2024, no. 3 (150), pp. 118--135 (in Russ.). EDN: ALNETV

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