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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/240

Title: Selection of magnetic materials for an active magnetic regenerative refrigerator
Authors: Reid, C E
Barclay, J A
Hall, J L
Sarangi, S K
Issue Date: 1994
Publisher: Elsevier
Citation: Journal of Alloys and Compounds, Vol 207-208, P 366-371
Abstract: High efficiencies of active magnetic regenerative refrigerators (AMRR) are strongly dependent on the correct selection of the magnetic regenerator working material. The selection process involves the thermodynamic analysis of the AMRR cycle to determine the adiabatic temperature change profile (ΔT versus T) over the temperature span of interest for an ideal material, and then the matching of real materials whose magnetocaloric effect (MCE) as a function of absolute temperature best fits this profile. This paper develops the calculation of the ideal magnetic material ΔT versus T profile for a real AMRR operating between 110 and 300 K and with 1 kW of cooling power. The ideal profile was a function of the constant entropy flux from the cold end heat load, the irreversible regenerator entropy production, and other real effects. To accommodate the large temperature span, several magnetic materials were chosen and layered in the regenerator from the cold to the hot end by increasing the Cur...
Description: Copyright for this article belongs to Elsevier Science Ltd http://dx.doi.org/10.1016/0925-8388(94)90241-0
URI: http://hdl.handle.net/2080/240
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