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Thermal Performance of High Temperature Titanium-Water Heat Pipes by Multiple Heat Pipe ManufacturersTitanium-water heat pipes are being investigated for use in heat rejection systems for lunar and Mars fission surface power systems. Heat pipes provide an efficient and reliable means to transfer heat to a radiator heat rejection system. NASA Glenn Research Center requisitioned nine titanium water heat pipes from three vendors. Each vendor supplied three heat pipes 1.25 cm diameter by 1.1 meter long with each vendor selecting a different wick design. Each of the three heat pipes is slightly different in construction. Additional specifications for the heat pipes included 500 K nominal operating temperature, light weight, and freeze tolerance. The heat pipes were performance tested gravity-aided, in the horizontal position and at elevations against gravity at 450 and 500 K. Performance of the three heat pipes is compared. The heat pipe data will be used to verify models of heat pipe radiators that will be used in future space exploration missions.
Document ID
Document Type
Contractor Report (CR)
Sanzi, James L.
(Sest, Inc. Middleburgh Heights, OH, United States)
Date Acquired
August 23, 2013
Publication Date
July 2, 2007
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
Meeting Information
Space Technology and Applications International Forum (STAIF-2007)(Albuquerque, NM)
Funding Number(s)
WBS: WBS 463169.04.03
Distribution Limits
Work of the US Gov. Public Use Permitted.
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