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Numerical Modeling of Multi-Material Active Magnetic Regeneration

Authors :
Kaspar Kirstein Nielsen
Kurt Engelbrecht
Christian Bahl
Anders Smith
Nini Pryds
Jesper Hattel
Source :
Technical University of Denmark Orbit, Nielsen, K K, Engelbrecht, K, Bahl, C R H, Smith, A, Pryds, N & Hattel, J H 2009, Numerical Modeling of Multi-Material Active Magnetic Regeneration . in ExHFT-7 : 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics . 1 edn, AGH University of Science and Technology Press, pp. 515-522, 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Krakow, Poland, 28/06/2009 .

Abstract

Magnetic refrigeration is a potentially environmentally-friendly alternative to vapour compression technology that is presented in this paper. The magnetocaloric effect in two magnetocaloric compounds in the La(Fe,Co,Si)13 series is presented in terms of their adiabatic temperature change and the specific heat as a function of temperature at constant magnetic field. A 2.5-dimensional numerical model of an active magnetic regenerative (AMR) refrigerator device is presented. The experimental AMR located at Risø DTU has been equipped with a parallel-plate based regenerator made of the two materials. Experimental zero heat-load temperature spans are presented for different operating conditions and the results are compared to predictions of the numerical model. It is concluded that the model reproduces the experimental tendencies and when including thermal parasitic losses to ambient and the predictions from the model are within 1.5 K of the experimental results.

Subjects

Subjects :
magnetocaloric effect
numerical modeling
active magnetic regeneration
Magnetic refrigeration
Fuel Cells and hydrogen
Brændselsceller og brint
Magnetisk køling

Details

Database :
OpenAIRE
Journal :
Technical University of Denmark Orbit, Nielsen, K K, Engelbrecht, K, Bahl, C R H, Smith, A, Pryds, N & Hattel, J H 2009, Numerical Modeling of Multi-Material Active Magnetic Regeneration . in ExHFT-7 : 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics . 1 edn, AGH University of Science and Technology Press, pp. 515-522, 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Krakow, Poland, 28/06/2009 .
Accession number :
edsair.dedup.wf.001..6f90cd4661cf4fa548fc25e6860b930c

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