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Comparison between a crank-drive reciprocating compressor and a novel oil-free linear compressor
journal contribution
posted on 2023-06-09, 03:32 authored by Kun LiangKun Liang, Richard Stone, Mike Dadd, Paul BaileyReciprocating compressors, driven by induction motors through a crank mechanism, have been commercially used over many years for refrigeration. An oil-free linear compressor driven by a moving magnet motor was designed, for a refrigeration system with a compact heat exchanger. Measurements using nitrogen are reported here to compare the motor performance and overall efficiencies of the two types of compressor with comparable design parameters. The experimental results show that the moving magnet linear motor has a much higher motor efficiency than the conventional induction motor, particularly at low power inputs. However, with a much smaller clearance volume (approaching zero), the crank-drive compressor demonstrates a higher volumetric efficiency based on the swept volume, that is approximately 20% higher than the linear compressor when operated at its maximum stroke (13 mm). It is anticipated that with a revised design, the overall performance of the linear compressor could be enhanced further.
History
Publication status
- Published
File Version
- Published version
Journal
International Journal of RefrigerationISSN
0140-7007Publisher
ElsevierExternal DOI
Volume
45Page range
25-34Department affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2016-10-17First Compliant Deposit (FCD) Date
2016-10-17Usage metrics
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