Real gas model for an electric swashplate refrigeration compressor

Arqam, Mohammad, Dao, Dzung Viet, Jahangiri, Amir, Mitchell, Mark and Woodfield, Peter (2020) Real gas model for an electric swashplate refrigeration compressor. International Journal of Refrigeration, 118. pp. 210-219. ISSN 0140-7007

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Abstract

A real-gas, restricted-flow valve model is compared with an ideal-gas, ideal-valve model for a 10-cylinder swashplate refrigeration compressor. Real gas properties of R134a are evaluated using the NIST standard reference database. A minor-loss discharge-coefficient approach is used to model the refrigerant flow rate through reed valves while the ideal-valve model requires no pressure difference to open the valve. In contrast with the ideal model, the discharge temperature, refrigerant mass flow rate and volumetric efficiency as a function of rotational speed are predicted well by including real-gas properties and flow restriction on the inlet valve. The ideal-gas model significantly overpredicts the discharge temperature and shows no dependence on rpm. Heat transfer to and from the cylinder wall during compression and expansion is found to have only a small effect on predictions of compressor performance. The valve model for the suction side has the largest influence on compressor performance predictions as a function of rpm.

Item Type:	Article
Additional Information:	Publisher Copyright: © 2020
Uncontrolled Keywords:	real gas model,refrigerant compressor,swashplate,volumetric efficiency,building and construction,mechanical engineering ,/dk/atira/pure/subjectarea/asjc/2200/2215
Faculty \ School:	Faculty of Science > School of Engineering, Mathematics and Physics
UEA Research Groups:	Faculty of Science > Research Groups > Fluids & Structures
Related URLs:	https://www.scopus.com/pages/publication...
Depositing User:	LivePure Connector
Date Deposited:	29 Jun 2026 13:56
Last Modified:	08 Jul 2026 14:36
URI:	https://ueaeprints.uea.ac.uk/id/eprint/103519
DOI:	10.1016/j.ijrefrig.2020.05.025

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