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RESEARCH PAPERS: Heat Pipes

Thermal Characteristics of Conventional and Flat Miniature Axially Grooved Heat Pipes

[+] Author and Article Information
D. Khrustalev, A. Faghri

Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269

J. Heat Transfer 117(4), 1048-1054 (Nov 01, 1995) (7 pages) doi:10.1115/1.2836280 History: Received January 01, 1995; Revised June 01, 1995; Online January 23, 2008

Abstract

A detailed mathematical model of low-temperature axially grooved heat pipes (AGHP) is developed in which the fluid circulation is considered along with the heat and mass transfer processes during evaporation and condensation. The results obtained are compared to existing experimental data. Both capillary and boiling limitations are found to be important for the flat miniature copper-water heat pipe, which is capable of withstanding heat fluxes on the order of 40 W/cm2 applied to the evaporator wall in the vertical position. The influence of the geometry of the grooved surface on the maximum heat transfer capacity of the miniature AGHP is demonstrated.

Copyright © 1995 by The American Society of Mechanical Engineers
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