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Ceramic heat pipe wickA wick for use in a capillary loop pump heat pipe is disclosed. The wick material is an essentially uniformly porous, permeable, open-cell, silicon dioxide/aluminum oxide inorganic ceramic foam having a silica fiber ratio, by weight, of about 78 to 22, respectively, a density of 6 lbs/cu ft, and an average pore size of less than 5 microns. A representative material having these characteristics is Lockheed Missile and Space Company, Inc.'s HTP 6-22. This material is fully compatible with the freons and anhydrous ammonia and allows for the use of these very efficient working fluids, and others, in capillary loops.
Document ID
19900014225
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Seidenberg, Benjamin (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Swanson, Theodore (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
November 28, 1989
Subject Category
Nonmetallic Materials
Accession Number
90N23541
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,883,116|NASA-CASE-GSC-13199-1
Patent Application
US-PATENT-APPL-SN-304147

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