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Thermo-Physical Properties of Intermediate Temperature Heat Pipe FluidsHeat pipes are among the most promising technologies for space radiator systems. The paper reports further evaluation of potential heat pipe fluids in the intermediate temperature range of 400 to 700 K in continuation of two recent reports. More thermo-physical property data are examined. Organic, inorganic, and elemental substances are considered. The evaluation of surface tension and other fluid properties are examined. Halides are evaluated as potential heat pipe fluids. Reliable data are not available for all fluids and further database development is necessary. Many of the fluids considered are promising candidates as heat pipe fluids. Water is promising as a heat pipe fluid up to 500 to 550 K. Life test data for thermo-chemical compatibility are almost non-existent.
Document ID
Document Type
Contractor Report (CR)
Beach, Duane E.
(NASA Glenn Research Center Cleveland, OH, United States)
Devarakonda, Angirasa
(Sest, Inc. Middleburgh Heights, OH, United States)
Anderson, William G.
(Advanced Cooling Technologies, Inc. Lancaster, PA, United States)
Date Acquired
September 7, 2013
Publication Date
March 1, 2005
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
Meeting Information
Space Technology and Applications International Forum(Albuquerque, NM)
Funding Number(s)
WBS: WBS 22-973-80-40
Distribution Limits
Work of the US Gov. Public Use Permitted.
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