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Polymeric heat pipe wickA wick for use in a capillary loop pump heat pipe is described. The wick material is an essentially uniformly porous, permeable, open-cell, polyethylene thermoplastic foam having an ultrahigh average molecular weight of from approximately 1 to 5 million, and an average pore size of about 10 to 12 microns. A representative material having these characteristics is POREX UF, which has an average molecular weight of about 3 million. This material is fully compatible with the FREONs and anhydrous ammonia and allows for the use of these very efficient working fluids in capillary loops.
Document ID
19880019749
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Seidenberg, Benjamin (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
August 23, 1988
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
88N29133
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,765,396|NASA-CASE-GSC-13019-1
Patent Application
US-PATENT-APPL-SN-942158

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