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Effects of bending on heat transfer performance of axial micro-grooved heat pipe

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Abstract

Heat pipe is always bent in the typical application of electronic heat dissipation at high heat flux, which greatly affects its heat transfer performance. The capillary limit of heat transport in the bent micro-grooved heat pipes was analyzed in the vapor pressure drop, the liquid pressure drop and the interaction of the vapor with wick fluid. The bent heat pipes were fabricated and tested from the bending angle, the bending position and the bending radius. The results show that temperature difference and thermal resistance increase while the heat transfer capacity of the heat pipe decreases, with the increase of the bending angles and the bending position closer to the vapor section. However, the effects of bending radius can be ignored. The result agrees well with the predicted equations.

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Authors and Affiliations

  1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510640, China

    Le-lun Jiang  (蒋乐伦), Yong Tang  (汤勇) & Min-qiang Pan  (潘敏强)

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  1. Le-lun Jiang  (蒋乐伦)
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  2. Yong Tang  (汤勇)
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  3. Min-qiang Pan  (潘敏强)
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Corresponding author

Correspondence to Min-qiang Pan  (潘敏强).

Additional information

Foundation item: Project(U0834002) supported by the Joint Funds of the National Nature Science Foundation of China and Guangdong Province; Project (2009ZM0134) supported by the Foundational Research Funds for the Central Universities in China

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Jiang, Ll., Tang, Y. & Pan, Mq. Effects of bending on heat transfer performance of axial micro-grooved heat pipe. J. Cent. South Univ. Technol. 18, 580–586 (2011). https://doi.org/10.1007/s11771-011-0734-2

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  • DOI: https://doi.org/10.1007/s11771-011-0734-2

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