Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 50, Issue 31, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/aa7a33
Keywords
multilayered regenerators; MnFeP1-xAsx; first order materials; magnetocaloric effect; active magnetic regenerator; experimental apparatus
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Funding
- Natural Sciences and Engineering Research Council of Canada
- BASF New Business
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This paper describes experimental performance data for MnFeP1-xAsx multilayer active magnetic regenerators. Five different matrices are tested: (i) one with three layers; (ii) one with six layers; and (iii) three, eight-layer regenerators where the layer thickness is varied. The tests are performed using a dual regenerator bespoke test apparatus based on nested Halbach permanent magnets. (PM II test apparatus at the University of Victoria.) Operating variables include displaced volume (3.8-12.65 cm(3)), operating frequency (0.5-0.8 Hz) and hot-side rejection temperature (293-313 K). The results are mainly reported in terms of zero net load temperature span as a function of rejection temperature; a few tests with non-zero applied load are also presented. A maximum temperature span of 32 K is found for an eight-layer regenerator, which is similar to a previous work performed with gadolinium in the same experimental apparatus.
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