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Development and Examination of an Internally Switchable Thermosiphon

Author

Listed:
  • Immanuel Voigt

    (Professorship Adaptronics and Lightweight Design, TU Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany)

  • Niklas Lütke

    (Professorship Adaptronics and Lightweight Design, TU Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany)

  • Kai Thüsing

    (Fraunhofer Institute for Machine Tools and Forming Technology IWU, Nöthnitzer Straße 44, 01187 Dresden, Germany)

  • Markus Winkler

    (Fraunhofer Institute for Physical Measurement Techniques IPM, Georges-Köhler-Allee 301, 79110 Freiburg, Germany)

  • Welf-Guntram Drossel

    (Professorship Adaptronics and Lightweight Design, TU Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany
    Fraunhofer Institute for Machine Tools and Forming Technology IWU, Nöthnitzer Straße 44, 01187 Dresden, Germany)

Abstract

Thermal switches contribute to efficient and safe thermal management of components and overall systems in various technical applications by actively controlling heat transfer in response to varying thermal loads and ambient conditions. Heat pipes are passive heat transfer devices constituting an integral part of various thermal management systems such as in spacecraft or consumer electronics thermal control. Heat pipes also form a promising approach for thermal switches due to their high effective thermal conductivity. In this paper, a wickless copper-water heat pipe based thermal switch with an electromagnetic linear actuator is presented. The magnetically actuated motion of a plunger integrated into the heat pipe affects the latent heat transport cycle leading to a switchable heat transfer. Thermal measurements conducted to determine the total thermal resistance of the heat pipe demonstrate the efficacy of the thermal switch. It was found that the thermal resistance of the heat pipe was increased by up to 53% in off state while the heat pipe performance in on state was not significantly affected by the integrated mechanism.

Suggested Citation

  • Immanuel Voigt & Niklas Lütke & Kai Thüsing & Markus Winkler & Welf-Guntram Drossel, 2022. "Development and Examination of an Internally Switchable Thermosiphon," Energies, MDPI, vol. 15(11), pages 1-11, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:3891-:d:823467
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    References listed on IDEAS

    as
    1. Markus Winkler & Christian Teicht & Patrick Corhan & Angelos Polyzoidis & Kilian Bartholomé & Olaf Schäfer-Welsen & Sandra Pappert, 2021. "Thermal Switch Based on an Adsorption Material in a Heat Pipe," Energies, MDPI, vol. 14(16), pages 1-20, August.
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    Cited by:

    1. Kaveh Sadeghi & Mostafa Kahani & Mohammad Hossein Ahmadi & Mohammad Zamen, 2022. "CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature Application," Energies, MDPI, vol. 15(23), pages 1-22, November.

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