Accession Number : AD0709108

Title :   A STUDY OF WIRE MESH WICK CHARACTERISTICS IN A LONGITUDINAL HEAT PIPE.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Hickox,Oscar Jonathan , Jr

Report Date : DEC 1969

Pagination or Media Count : 71

Abstract : An everted, glass-enclosed, nickel heat pipe was operated at constant volume using a nickel wire mesh wick and distilled water. The performance of the pipe was evaluated under various combinations of wick parameters. The effect of the radial evaporator capillary radius, the radial condenser capillary radius, and the evaporator wetting angle were investigated at a pressure range of 27 to 24 inches of Mercury vacuum. The performance of the pipe was found to improve with decreasing radial evaporator capillary radius and decreasing amounts of non-condensables in the working fluid. A detrimental wick-aging effect which led to violent boiling and early dryout was observed. A discussion of observed behavior presents evidence that boiling and wick fin effect may play a significant part in heat pipe operation. (Author)

Descriptors :   (*HEAT EXCHANGERS, PERFORMANCE(ENGINEERING)), NICKEL, CAPILLARY TUBES, BOILING, HEAT TRANSFER, MASS TRANSFER, PIPES, THESES

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE