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