Experimental Investigation of a Magnetic Refrigerator Based on Magnetically Active Regeneration

摘要

The concept of magnetically active regeneration is explored in a prototype magnetic refrigerator which has produced a refrigeration of 0.40 W at 3.79 K while rejecting 3.0 W to a 5.51 K sink. The prototype refrigerator consists of a Gadolinium-Gallium-Garnet(Gd(3)Ga(5)O(12))regenerator core excited by an AC superconducting solenoid. A reversing flow of 3 atm supercritical helium carries the heat of magnetization to the hot reservoir and refrigerates the cold reservoir with the cooling of demagnetization. Keywords: Cryogenics; Adiabatic Demagnetization.