Une étude des caractéristiques de convection thermomagnétique d'un système de refroidissement utilisant un nano-frigorigène magnétique.

The experimental system of a cooling device using Fe3 O4-R600a as magnetic nano-refrigerant was built up. And the influences of magnetic field distribution,magnetic field intensity,heat load,cooling temperature were discussed. The results show that the effect of the device was improved obviously by external magnetic field,and the heat was transferred by the circulating fluid without a pump. On the meantime, synergic function between the external magnetic field and the thermal field has impact on the velocity of the working fluid and the cooling performance of the device. Using external magnetic field, the cooling performance of the device also can be effectively controlled.