Journal
CRYOGENICS
Volume 52, Issue 2-3, Pages 119-128Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cryogenics.2011.09.007
Keywords
AMR; Thermodynamics; Magnetocaloric effect; Magnetic refrigeration
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Funding
- Natural Sciences and Engineering Research Council of Canada
- NSERC Hydrogen Canada (H2Can) Strategic Network
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Governing equations for the thermodynamics of an active magnetic regenerator (AMR) are used to analyze the performance of simplified cycles operating with idealized magnetocaloric material. An idealized material with a magnetocaloric effect that varies linearly with temperature is assumed. Results are presented for cases where balance and symmetry are equal to one (beta = sigma = 1) and the refrigerant specific heat is constant. Under these conditions, the temperature distribution, cooling power, work rate, and efficiency are determined for various values of entrained fluid thermal mass (R). A set of sample results are presented for each case as a function of utilization, temperature span, and conductance. Results from the simplified thermodynamic theory are briefly compared to experimental results from the literature. (C) 2011 Elsevier Ltd. All rights reserved.
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