Modelling of a magnetocaloric system for cooling in the kilowatt range

Govindaraju, V.R., Vilathgamuwa, D.M., & Ramanujan, R.V. (2014) Modelling of a magnetocaloric system for cooling in the kilowatt range. International Journal of Refrigeration, 43, pp. 143-153.

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Abstract

A numerical time-dependent model of an active magnetic regenerator (AMR) was developed for cooling in the kilowatt range. Earlier numerical models have been mostly developed for cooling power in the 0.4 kW range. In contrast, this paper reports the applicability of magnetic refrigeration to the 50 kW range. A packed bed active magnetic regenerator was modelled and the influence of parameters such as geometry and operating parameters were studied for different geometries. The pressure drop for AMR bed length and particle diameter was also studied.

High cooling power and coefficient of performance (COP) were achieved by optimization of the diameter of the magnetocaloric powder particles and operating frequency. The optimum operating conditions of the AMR for a cooling capacity of 50 kW was determined for a temperature span of 15 K. The predicted coefficient of performance (COP) was found to be ∼6, making it an attractive alternative to vapour compression systems.

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ID Code: 75172
Item Type: Journal Article
Refereed: Yes
DOI: 10.1016/j.ijrefrig.2014.03.007
ISSN: 0140-7007
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 Elsevier Ltd and IIR.
Copyright Statement: This is the author’s version of a work that was accepted for publication in International Journal of Refrigeration. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Refrigeration, [VOL 43, (2014)] DOI: 10.1016/j.ijrefrig.2014.03.007
Deposited On: 18 Aug 2014 22:39
Last Modified: 19 Aug 2014 21:25

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