Caloric materials respond to external field variations such as magnetic, stress, and electric. A simple caloric cycle uses entropy and temperature changes resulting from a single field variation to provide useful transfers of work and heat. An active regenerator cycle increases operating range and efficiency of a caloric material when property variations are appropriately matched to design conditions. However, the variability of material properties, wide range of design variables, and non-linear interactions complicate design of devices. Simplified analytic models are needed to increase understanding and quantify potential of calorics for commercial heat pumps and engines. An analytic model of a generic active caloric regenerator operating as a heat pump or engine is described. A thermal effectiveness is defined as an analytic function of operating, design, and material parameters.
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Research Article| May 27 2020
Thermal effectiveness of active caloric regenerators
Special Collection: Multicalorics
A. Rowe a)
Department of Mechanical Engineering, Institute for Integrated Energy Systems, University of Victoria, 3800 Finnerty Rd., Victoria, British Colombia V8W 3P6,
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Note: This paper is part of the Special Topic on Multicalorics.
A. Rowe; Thermal effectiveness of active caloric regenerators. J. Appl. Phys. 29 May 2020; 127 (20): 204502. https://doi.org/10.1063/5.0003531
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