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Matériaux à effet magnétocalorique géant et systèmes de réfrigération magnétique

Abstract : Magnetic refrigeration is an emerging cooling technology. It is an environmentally friendly technique when compared to the classical fluid-compression approach. The magnetocaloric effect (MCE) on which it is based exploits the cooling and/or heating of specific materials when subjected to a magnetic field. This PhD thesis deals with the study of both room-temperature MCE materials and magnetic refrigeration devices based on permanent magnets. Compounds with giant magnetocaloric effect of formula Mn1−x(Ti0.5V0.5)xAs were studied ; in parallel, a complete system of magnetic refrigeration based on permanent magnets was built and tested. These two complementary themes were then merged into a new experimental setup. This setup was specifically designed to test and compare new materials in practical working conditions in a refrigerant bed, and to study the influence of main-cycle parameters on the system's performance.
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Submitted on : Tuesday, February 15, 2011 - 2:36:06 PM
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  • HAL Id : tel-00566193, version 1



Cédric Dupuis. Matériaux à effet magnétocalorique géant et systèmes de réfrigération magnétique. Sciences de l'ingénieur [physics]. Université de Grenoble, 2009. Français. ⟨tel-00566193⟩



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