Modelling and measurement of a moving magnet linear compressor performance

Journal article


Liang, K., Stone, R., Davies, G., Dadd, M. and Bailey, P. (2014). Modelling and measurement of a moving magnet linear compressor performance. Energy. 66, pp. 487-495. https://doi.org/10.1016/j.energy.2014.01.035
AuthorsLiang, K., Stone, R., Davies, G., Dadd, M. and Bailey, P.
Abstract

A novel moving magnet linear compressor with clearance seals and flexure bearings has been designed and constructed. It is suitable for a refrigeration system with a compact heat exchanger, such as would be needed for CPU cooling. The performance of the compressor has been experimentally evaluated with nitrogen and a mathematical model has been developed to evaluate the performance of the linear compressor. The results from the compressor model and the measurements have been compared in terms of cylinder pressure, the ‘P–V’ loop, stroke, mass flow rate and shaft power. The cylinder pressure was not measured directly but was derived from the compressor dynamics and the motor magnetic force characteristics. The comparisons indicate that the compressor model is well validated and can be used to study the performance of this type of compressor, to help with design optimization and the identification of key parameters affecting the system transients. The electrical and thermodynamic losses were also investigated, particularly for the design point (stroke of 13 mm and pressure ratio of 3.0), since a full understanding of these can lead to an increase in compressor efficiency.

KeywordsMoving magnet linear compressor, Mathematical model, MeasurementsP–V loopLosses
Year2014
JournalEnergy
Journal citation66, pp. 487-495
PublisherElsevier
ISSN0360-5442
Digital Object Identifier (DOI)https://doi.org/10.1016/j.energy.2014.01.035
Publication dates
Print01 Mar 2014
Publication process dates
Accepted09 Jan 2014
Deposited26 Jan 2022
Accepted author manuscript
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Open
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