Application of axial grooves to cryogenic variable conductance heat pipe technology
Abstract
Tests results obtained with an ATS axial groove aluminum extrusion adapted for use as a cryogenic thermal diode and/or a variable conductance heat pipe are presented. Ethane at a nominal operating temperature of 185 C was used as working fluid. In addition to both active and passive gas control, diode designs utilizing gas blockage or liquid trap were investigated. Specific requirements and performance parameters such as transient behavior, reservoir sizes, shutdown energy, etc., were evaluated. Results are also presented for tests where the liquid trap was used as a secondary heat pipe to demonstrate thermal switching with simultaneous heat pipe operation and diode shutdown.
- Publication:
-
Heat Pipes
- Pub Date:
- 1976
- Bibcode:
- 1976hepi.rept..183B
- Keywords:
-
- Diodes;
- Heat Pipes;
- Temperature Control;
- Thermal Conductivity;
- Ats 6;
- Cold Traps;
- Cryogenics;
- Feedback Control;
- Gas Flow;
- Grooves;
- Performance Tests;
- Technology Utilization;
- Temperature Effects;
- Electronics and Electrical Engineering