Effects of gravity on gas-loaded variable conductance heat pipes
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Authors
Kelleher, Matthew Dennis
Subjects
Heat Pipes
Gas-Loaded Heat Pipes
Variable Conductance Heat Pipes
Liquid Crystal Thermography
Gas-Loaded Heat Pipes
Variable Conductance Heat Pipes
Liquid Crystal Thermography
Advisors
Date of Issue
1977-03-25
Date
3/25/1977
Publisher
Monterey, California. Naval Postgraduate School
Language
eng
Abstract
The effects of gravity on the operation of gas-loaded variable conductance heat pipes have been investigated. Experimental results have been obtained for three heat pipes (1.6 cm, 2.5 cm and 5 cm diameter) operating with methanol or Freon 113 as the working fluid and krypton or helium as the control gas. Results show that gravity tends to distort the axial temperature profiles on the small diameter pipe. For the large diameter pipe gravity has the effect of causing a stratification of the working fluid and non-condensible gas. These results seem to indicate that in certain cases the presently available design procedure will have to be modified to account for the effects of gravity on variable conductance heat pipe operation. (Author)
Type
Technical Report
Description
Series/Report No
Department
Identifiers
NPS Report Number
NPS-69Kk77031
Sponsors
supported by the National Science Foundation,
Heat Transfer Program, Washington, D.C.
Funder
NSF Grant #AG-496
Format
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.