Heat transfer system using thermally-operated, heat-conducting valves
US4112699A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1977 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | May 4, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/891
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat transfer system, e.g., refrigeration system or heater, particularly aluable 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.