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RESEARCH PAPERS: Multiphase Heat Transfer

Thermal Analysis of a Micro Heat Pipe

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

Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435

J. Heat Transfer 116(1), 189-198 (Feb 01, 1994) (10 pages) doi:10.1115/1.2910855 History: Received February 01, 1993; Revised April 01, 1993; Online May 23, 2008

Abstract

A detailed mathematical model is developed in which the heat and mass transfer processes in a micro heat pipe (MHP) are examined. The model describes the distribution of the liquid in a MHP and its thermal characteristics depending upon the liquid charge and the applied heat load. The liquid flow in the triangular-shaped corners of a MHP with polygonal cross section is considered by accounting for the variation of the curvature of the free liquid surface and the interfacial shear stresses due to a liquid-vapor frictional interaction. The predicted results obtained are compared to existing experimental data. The importance of the liquid fill, minimum wetting contact angle, and the shear stresses at the liquid-vapor interface in predicting the maximum heat transfer capacity and thermal resistance of the MHP is demonstrated.

Copyright © 1994 by The American Society of Mechanical Engineers
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