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Investigation on the mass flow rate of a refrigerator compressor based on the p–V diagram

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He, Z, Li, D, Ji, L, Wang, X ORCID: 0000-0003-4293-7523 and Wang, T 2020 , 'Investigation on the mass flow rate of a refrigerator compressor based on the p–V diagram' , Applied Sciences, vol. 10, no. 19 , pp. 1-11 , doi: 10.3390/app10196650.

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Abstract

The refrigerant mass flow rate of a refrigerator compressor can only be measured by a mass flow meter and heat balance method. This paper focuses on the expansion and compression phase in which the compressor cylinder is closed, and proposes a measurement method of instantaneous mass flow of the refrigerator compressor. The comparison of the experimental pressure variation in the p–V diagram and the theoretical adiabatic process implied that the expansion and compression process of the refrigerator compressor approximated the adiabatic process. Based on the approximations and the experimental p–V diagram, a calculation method for refrigerant mass in the cylinder during the expansion and compression phase is proposed. Subsequently, the mass flow of the refrigerator compressor can be obtained. Furthermore, compared with experimental data and based on the method proposed in this paper, the error of the mass flow rate obtained is less than 3.13%. Based on this calculation method and the experimental p–V diagram, the influence of suction pressure on compressor performance is investigated.

Item Type: Article
Authors/Creators:He, Z and Li, D and Ji, L and Wang, X and Wang, T
Keywords: P-V diagram, mass flow rate, suction pressure, refrigeration compressor
Journal or Publication Title: Applied Sciences
Publisher: MDPIAG
ISSN: 2076-3417
DOI / ID Number: 10.3390/app10196650
Copyright Information:

© 2020 by the authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/

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