Accession Number : ADD001500

Title :   Magnetic Refrigeration.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Clark,Arthur C

Report Date : 15 Oct 1974

Pagination or Media Count : 7

Abstract : The patent describes a magnetic refrigeration system which includes thermal transfer means comprising a serial arrangement of magnetocaloric elements and a source of magnetic field. The serial arrangement comprises a material having a large, negative magnetocaloric effect which cools upon application of a magnetic field; a paramagnetic material in abutting relationship therewith which cools upon removal of a magnetic field; and end elements functioning as thermal switches. The magnetic field is caused to move along the serial arrangement, permitting heat to be transferred from a heat source to a heat sink. Cascading of the serial arrangements increases the refrigeration effect.

Descriptors :   *Refrigeration systems, *Patents, Magnetic fields, Paramagnetic materials, Heat transfer, Thermal switches, Garnet, Yttrium iron garnet, Cryogenics, Cooling, Coefficients, Magnetization, Demagnetization, Solenoids

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE