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Application of axial grooves to cryogenic variable conductance heat pipe technologyTests 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.
Document ID
19760025302
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brennan, P. J.
(B and K Eng., Inc. Moffett Field, CA, United States)
Groll, M.
(NASA Ames Research Center)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Publication Information
Publication: ESA Heat Pipes
Subject Category
Electronics And Electrical Engineering
Accession Number
76N32390
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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