An Analytical and Experimental Investigation of Rotating, Non-Capillary Heat Pipes
Final rept. Sep 1969-Jun 1972
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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An approximate theoretical model is derived for laminar film condensation on the inside of a rotating, truncated cone, and is used to predict the heat transfer performance of rotating, non-capillary heat pipes for a wide variety of parametric conditions. Experimental results are presented for water, ethyl alcohol and freon-113 in a stainless steel heat pipe rotating for speeds of 2800 RPM. Results show that these devices can be used effectively to transfer large quantities of heat in rotating systems. Predicted results agree to within plus or minus 20 percent of the experimental data. Dropwise condensation, instead of film condensation, improves heat pipe performance, while the presence of non-condensible gases impairs performance.
- Air Conditioning, Heating, Lighting and Ventilating