Analysis of Structural Parameters of Grooved-Wicksin Micro Heat Pipes Based on Capillary Limits

Xi Bing Li; Z.M. Shi; S.G. Wang; Q.M. Hu; L. Bao; H.J. Zhang

doi:10.4028/www.scientific.net/KEM.499.21

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 499Analysis of Structural Parameters of...

Analysis of Structural Parameters of Grooved-Wicksin Micro Heat Pipes Based on Capillary Limits

Abstract:

For great progress in heat pipe technology, a micro heat pipe has become an ideal heat dissipating device in high heat-flux electronic products, and capillary limit is the main factor affecting its heat transfer performance. Based on analyses of capillary limit and currently commonly-used groove structures, this paper built capillary limit models for micro heat pipes with dovetail-groove, rectangular-groove, trapezoidal-groove and V-groove wick structures respectively for theoretical analyses. The analysis results show that better heat transfer performances can be obtained in micro heat pipes with small-angle dovetail (i.e. a sector structure), rectangular and small-angle trapezoidal grooved wick structures when groove depth is 0.2-0.3mm and top-width-to-depth ratio is 1.2-1.5.

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Periodical:

Key Engineering Materials (Volume 499)

Pages:

21-26

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.499.21

Citation:

Cite this paper

Online since:

January 2012

Authors:

Xi Bing Li, Z.M. Shi, S.G. Wang, Q.M. Hu, L. Bao, H.J. Zhang

Keywords:

Capillary Limit, Groove, Heat-Dissipation Device, Micro Heat Pipe

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