Regeneration efficiency, shuttle heat loss and thermal conductivity in epoxy-composite annualr gap regenerators from 4K to 80K
Abstract
A test apparatus designed to simulate a section of a Stirling cycle cryocooler was built. Measurements of regeneration efficiency, shuttle heat loss and thermal conductivity reported for several regenerator test sections. The test composites were epoxy glass, epoxy glass with lead particles, epoxy glass with activated charcoal and epoxy graphite. Losses measured for these materials were approximately the same. Losses are in good agreement with those calculated theoretically for an epoxy glass (C-10) composite. The implications of these results on cryocooler design are discussed.
- Publication:
-
Refrig. for for Cryogenic Sensors
- Pub Date:
- December 1983
- Bibcode:
- 1983rcgs.nasa..131M
- Keywords:
-
- Cryogenic Cooling;
- Refrigerators;
- Regenerative Cooling;
- Stirling Cycle;
- Activated Carbon;
- Composite Materials;
- Design Analysis;
- Epoxy Resins;
- Glass;
- Space Shuttles;
- Specific Heat;
- Thermal Conductivity;
- Engineering (General)