Accession Number : ADD005418

Title :   Heat Transfer System Using Thermally-Operated, Heat-Conducting Valves.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Hudson,George Elbert , III ; Clark,Arthur E

Report Date : 12 Sep 1978

Pagination or Media Count : 6

Abstract : This patent discusses a heat transfer system, e.g., refrigeration system or heater, particularly valuable at cryogenic temperatures which comprises a serial arrangement, in abutting contact and connected to the material or device to be cooled or heated, of a thermal reservoir made of a material having a specific heat capacity, a thermal valve made of a thermally-conductive material whose thermal conductivity increases as its temperature increases, e.g., magnesium, a working material whose temperature is periodically varied, e.g., by magnetic or electric fields, and another valve of a thermal-conductive material whose thermal conductivity decreases as its temperature increases, e.g., NaCl. The magnetic refrigeration or heater units may be ganged to increase the cooling or heating ability. (Author)

Descriptors :   *Patents, *Valves, *Heat transfer, Thermal conductivity, Refrigeration systems, Heaters, Cryogenics, Temperature, Cooling, Heat sinks, Specific heat

Subject Categories : Pumps, Filters, Pipes, Tubing, Fittings & Vlvs
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE