Accession Number : AD0727661

Title :   Performance Characteristics of Rotating, Non-Capillary Heat Pipes.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Newton,Walter Hughes , Jr

Report Date : JUN 1971

Pagination or Media Count : 61

Abstract : A Nusself-type analysis was performed for laminar film condensation on the inside of a rotating truncated cone with small half cone angles. This analysis included the interfacial shear between the vapor and condensate, the vapor pressure drop, the thermal resistance in the condenser wall, and the condenser outside cooling mechanism. An approximation of the analytical model made it possible to find a numerical solution for small half cone angles greater than zero. A non-capillary rotating heat pipe containing an evaporator, condenser, and distilled water as the working fluid was tested. It was rotated at 702 and 1404 RPM, and the heat transfer rates of the heat pipe were determined experimentally for different saturation temperatures corresponding to electrical power inputs ranging from 1 kW to 9 kW. The experimental results showed that the non-capillary rotating heat pipe was an effective heat transfer device. The approximate numerical solution conservatively predicted the heat transfer rate with a deviation of 18% at 702 RPM and 5% at 1404 RPM. (Author)

Descriptors :   (*HEAT EXCHANGERS, PIPES), MASS TRANSFER, HEAT OF VAPORIZATION, PERFORMANCE(ENGINEERING), LAMINAR FLOW, CONICAL BODIES, NUMERICAL ANALYSIS, CAPILLARY TUBES, THESES, ROTATION

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE