Performance of an oil-free linear compressor using R1234yf

Li, Zhaohua and Liang, Kun (2018) Performance of an oil-free linear compressor using R1234yf. 1st IIR International Conference on the Application of HFO Refrigerants, Birmingham, 2nd-5th September 2018. Published in: Proceedings of 1st IIR International Conference on the Application of HFO Refrigerants. 1128 International Institute of Refrigeration ISSN 0151-1637 ISBN 9782362150272

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Abstract

As an alternative to the hydrocarbons (HCs), R1234yf synthetic refrigerant from the family of the hydrofluoroolefins (HFOs), has emerged recently as a replacement fluid for R134a. The purpose of this study is to investigate the performance of an oil-free linear compressor using R1234yf operated at different pressure ratios for household refrigerators. A mathematical model for the oil-free linear compressor using R1234yf has been developed. The compressor stroke was set as 14 mm for minimum dead volume with the evaporator temperature of – 23 °C. The result shows that the bleed flow rate can be 5% of main flow rate, and the resonant frequency varies between 32.7 Hz and 35.3 Hz for pressure ratios of 5-12. Cylinder mean pressure, shaft power, bleed flow, and clearance seal power loss increase with the pressure ratio. At pressure ratio of 10, and clearance seal power loss represents 8% of shaft power.

Item Type: Conference Proceedings
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Dynamics, Control and Vehicle Research Group
Depositing User: Kun Liang
Date Deposited: 23 Jul 2018 09:24
Last Modified: 01 Feb 2019 17:31
URI: http://sro.sussex.ac.uk/id/eprint/77309

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