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Boiling of FC-72 on Surfaces with Open Copper Microchannel

Author

Listed:
  • Robert Kaniowski

    (Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, al. Tysiąclecia P.P. 7., 25-314 Kielce, Poland)

  • Robert Pastuszko

    (Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, al. Tysiąclecia P.P. 7., 25-314 Kielce, Poland)

Abstract

The paper presents the results of experimental research on pool boiling heat transfer of dielectric liquid FC-72. Measurements were made at atmospheric pressure on open surfaces with microchannels. Heat transfer surfaces, in the form of parallel milled microchannels, were made of copper. The rectangular cross-sectional microchannels were 0.2 to 0.5 mm deep and 0.2 to 0.4 mm wide. The surfaces, compared to a smooth flat surface, provided a five-fold increase in the heat transfer coefficient and a two-fold increase in the critical heat flux. The article analyses the influence of the width and height of the microchannel on the heat transfer process. The maximum heat flux was 271.7 kW/m 2 , and the highest heat transfer coefficient obtained was 25 kW/m 2 K. Furthermore, the experimental results were compared with selected correlations for the nucleate pool boiling.

Suggested Citation

  • Robert Kaniowski & Robert Pastuszko, 2021. "Boiling of FC-72 on Surfaces with Open Copper Microchannel," Energies, MDPI, vol. 14(21), pages 1-18, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:21:p:7283-:d:671538
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    References listed on IDEAS

    as
    1. Łukasz J. Orman & Norbert Radek & Jacek Pietraszek & Marcin Szczepaniak, 2020. "Analysis of Enhanced Pool Boiling Heat Transfer on Laser—Textured Surfaces," Energies, MDPI, vol. 13(11), pages 1-19, May.
    2. Robert Kaniowski & Robert Pastuszko, 2021. "Pool Boiling of Water on Surfaces with Open Microchannels," Energies, MDPI, vol. 14(11), pages 1-21, May.
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    Cited by:

    1. Robert Kaniowski, 2023. "Pool Boiling of Novec-649 on Inclined Microchannel," Energies, MDPI, vol. 16(5), pages 1-17, March.

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