Accession Number : ADA180991

Title :   Experimental Investigation of a Magnetic Refrigerator Based on Magnetically Active Regeneration.

Descriptive Note : Final rept. May 84-May 86,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE CRYOGENIC ENGINEERING LAB

Personal Author(s) : Iwasa,Yukikazu ; Smith,Joseph L. , Jr. ; Taussig,Carl P.

Report Date : MAR 1987

Pagination or Media Count : 131

Abstract : 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(Gd3Ga5012)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.

Descriptors :   *SOLENOIDS, *SUPERCONDUCTORS, *CRYOGENICS, *MAGNETIC FIELDS, *ADIABATIC CONDITIONS, *DEMAGNETIZATION, *REFRIGERATION SYSTEMS, ALTERNATING CURRENT, LOW TEMPERATURE, RESERVOIRS, HIGH TEMPERATURE, PROTOTYPES, REFRIGERATION SYSTEMS, COOLING, HEAT, MAGNETIZATION

Subject Categories : Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE