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Technical Briefs

Heat Transfer Limitation of a Micro Heat Pipe

[+] Author and Article Information
K. N. Shukla

School of Mechanical Sciences, Karunya University, Coimbatore 641114, Indiakn_shukla@rediffmail.com

J. Electron. Packag 131(2), 024502 (Apr 02, 2009) (3 pages) doi:10.1115/1.3103970 History: Received July 19, 2008; Revised December 04, 2008; Published April 02, 2009

An analytical expression for the heat transport capability of micro heat pipe is derived. The vapor continuum limitation has been considered in deriving the heat transport capability of a micro heat pipe. As the micro heat pipe uses sharp-cornered square, triangular, or other polygonal channels that can serve as capillary arteries, its transport capability depends on the capillary limit. It has been shown that the operating limit of the micro heat pipe depends on the vapor continuum limitation, capillary limit, and the gravity.

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Copyright © 2009 by American Society of Mechanical Engineers
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References

Figures

Grahic Jump Location
Figure 3

Maximum heat transfer versus operating temperature

Grahic Jump Location
Figure 2

(a) Triangular shaped micro heat pipe schematic. (b) Micro heat pipe embedded wafer structure.

Grahic Jump Location
Figure 1

Geometry of different cross-sectional shapes of micro heat pipes: (a) equilateral triangle; (b) cusped diamond

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