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Based on the magnetocaloric effect in some ferromagnetic materials around the room temperature, the magnetic refrigeration is an emerging technology having the following strong advantage comparing to the conventional ones: this technology offers an environmental advantage with avoiding greenhouse gas emissions from refrigerants used in the classical vapor compression machines. However, cost and efficiency have still to be improved. Then, in order to propose an accurate modeling of magnetic refrigeration systems, a multi-physics model is proposed. It consists in coupling a 3D FEM magnetostatic model, an analytic magnetocaloric model and a thermo-fluidic model solved with finite difference method. An analysis of the magnetic field computation evaluates the impact of error on the thermal performances of the system when bypassing 3D FEM.
numerical model, magnetocaloric effect, magnetic refrigeration, magnetic field computing.
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