A novel linear electromagnetic-drive oil-free refrigeration compressor using R134a

Liang, Kun, Stone, Richard, Dadd, Mike and Bailey, Paul (2014) A novel linear electromagnetic-drive oil-free refrigeration compressor using R134a. International Journal of Refrigeration, 40. pp. 450-459. ISSN 0140-7007

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Abstract

A new type of oil-free moving magnet linear compressor with clearance seals and flexure springs has been designed for incorporation into a vapour compression refrigeration system with compact heat exchangers for applications such as electronics cooling. A linear compressor prototype was built with a maximum stroke of 14 mm and a piston diameter of 19 mm. An experimental apparatus was built to measure the compressor efficiencies and coefficient of performance (COP) of a refrigeration system with the linear compressor, using R134a. The resonant frequency for each operating condition was predicted using the discharge pressure, suction pressure and stroke. Refrigeration measurements were conducted for different strokes under each pressure ratio with a fixed condenser outlet temperature of 50 �C and evaporator temperature ranging from 6 �C to 27 �C. The results show that the COPs are around 3.0 for tests with a pressure ratio of 2.5 (evaporator temperature of 20 �C).

Item Type: Article
Keywords: Oil-free; Moving magnet motor; Refrigeration; Linear compressor; Resonance; COP
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Kun Liang
Date Deposited: 17 Oct 2016 13:23
Last Modified: 08 Mar 2017 07:39
URI: http://sro.sussex.ac.uk/id/eprint/64796

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