He-3 cooling systems for space
Abstract
The development of a space-compatible He(3) refrigerator would provide a significant improvement in several areas of research in the 0.3 to 1 K temperature range. There are several methods of achieving these temperatures on Earth: He(3) refrigeration, dilution refrigeration, and adiabatic demagnetization refrigeration. The progress of adapting He(3) refrigeration for use in space is described. Various cycles and possible embodiments of He(3) refrigerators are described. Also included is an analysis of the liquid confinement and liquid-vapor phase-separation system. A possible configuration is then analyzed. Finally, the results of ground-based experiments will be discussed.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- July 1984
- Bibcode:
- 1984nasa.reptW....K
- Keywords:
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- Aerospace Environments;
- Helium Isotopes;
- Refrigerators;
- Systems Compatibility;
- Cryogenics;
- Interfacial Tension;
- Phase Separation (Materials);
- Porosity;
- Structural Design Criteria;
- Thermal Conductivity;
- Fluid Mechanics and Heat Transfer