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The cooling characteristics of a room temperature magnetic refrigerator using an active magnetic regenerator (AMR) is presented. The AMR system, which is based on a combination of a thermal storage process and a regeneration process, is widely applied for room temperature magnetic refrigerator. And the system has four sequential processes : adiabatic magnetization, fluid flow, adiabatic demagnetization, and fluid flow. We devise the appropriate simulation model of the heat transfer process inside the AMR particle bed. In addition, the temperature profile inside the AMR bed and the cooling characteristics of the room temperature magnetic regenerator using AMR are performed analytically. In this research, the validity of the analytical model is verified by comparing the experimental results with the analytical results. The results show the larger the fluid transfer volume, the larger the temperature difference between the hot and the cold ends. Also we can observe when the higher magnetic field is applied to the magnetocaloric material, the large temperature span is obtained.

Cooling Performance of Room-temperature Magnetic Refrigerator with Active Magnetic Regenerator (Numerical Analysis on Cooling Performance)