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Thermal Performances Investigation of Anti-Gravity Heat Pipe with Tapering Phase-Change Chamber

Author

Listed:
  • Jianhua Xiang

    (School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006, China)

  • Xi-bo Chen

    (School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006, China)

  • Jiale Huang

    (School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006, China
    Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, China)

  • Chunliang Zhang

    (School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006, China)

  • Chao Zhou

    (School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006, China)

  • Haoxing Zheng

    (School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006, China)

Abstract

The objective of this study was to fabricate anti-gravity heat pipes with a tapering column phase-change chamber and changeable cross-sectional wick structure. The thermal performances of the anti-gravity heat pipes were experimentally investigated. Results show that the thermal resistances of the different heat pipes are less than 0.03 °C/W, except for the sharp conical chamber heat pipe under anti-gravity heating conditions (0.121 °C/W). Start-up times of different types of heat pipes are similar and the temperatures are steady within 3 to 5 min. The heat transfer ability of a conical chamber is always better than that of a cylindrical one. The performance of the sharp conical chamber heat pipe is the best under gravity assistance heating conditions. Contrarily, the blunt conical chamber heat pipe has the best heat transfer ability under anti-gravity heating conditions. Moreover, the heat transfer capability of the blunt conical chamber heat pipe is unaffected by the relative position of the heat and cold sources, which is suitable for constant temperature cooling applications with frequent switching of the heat and cold sources.

Suggested Citation

  • Jianhua Xiang & Xi-bo Chen & Jiale Huang & Chunliang Zhang & Chao Zhou & Haoxing Zheng, 2020. "Thermal Performances Investigation of Anti-Gravity Heat Pipe with Tapering Phase-Change Chamber," Energies, MDPI, vol. 13(19), pages 1-10, September.
  • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5036-:d:418833
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    Cited by:

    1. Łukasz Adrian & Szymon Szufa & Piotr Piersa & Piotr Kuryło & Filip Mikołajczyk & Krystian Kurowski & Sławomir Pochwała & Andrzej Obraniak & Jacek Stelmach & Grzegorz Wielgosiński & Justyna Czerwińska , 2021. "Analysis and Evaluation of Heat Pipe Efficiency to Reduce Low Emission with the Use of Working Agents R134A, R404A and R407C, R410A," Energies, MDPI, vol. 14(7), pages 1-29, March.

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