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RESEARCH PAPERS

An Experimental Investigation of a High Flux Heat Pipe Heat Sink

[+] Author and Article Information
H. B. Ma

Department of Mechanical and Aerospace Engineering, University of Missouri—Columbia, Columbia, MO 65211mah@missouri.edu

K. P. Lofgreen

Department of Mechanical and Aerospace Engineering, University of Missouri—Columbia, Columbia, MO 65211

G. P. Peterson

Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180

J. Electron. Packag 128(1), 18-22 (May 10, 2005) (5 pages) doi:10.1115/1.2159004 History: Received August 12, 2004; Revised May 10, 2005

An experimental investigation of a highly efficient heat pipe heat sink was investigated, in which the interline region was optimized using sintered particles. The effects of condenser size, sintered particles, and forced air flow on the heat transfer performance were investigated experimentally. The experimental results indicated that the thin film evaporation could significantly increase the evaporating heat transfer coefficient and remove heat fluxes up to 800kWm2. In addition, a theoretical model capable of predicting the temperature drop occurring in this device was developed. The predicted performance was in good agreement with the experimental data and the resulting model can be used to assist in the design of high heat flux, heat pipe heat sinks.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

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Figure 8

Effect of air flow velocity on the temperature drop (sintered layer thickness=0.6mm and working fluid=water)

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Figure 9

Effect of the sintered layer thickness on the temperature drop (condenser length=7.1cm, Re=7119, and working fluid=water)

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Figure 7

Effect of condenser length on the temperature drop (sintered layer thickness=0.6mm, Re=6432, and working fluid=water)

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Figure 6

Transient response characteristics

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Figure 4

Schematic of the experimental system

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Figure 3

A heat pipe (unit=mm)

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Figure 2

Vapor space and flow path in the heat pipe

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Figure 1

Wick structure in the evaporator

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