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Experimental Investigation of Critical Heat Flux on Different Surfaces at Low Pressure and Low Flow

Author

Listed:
  • Ladislav Suk

    (Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2896/2, 61669 Brno, Czech Republic)

  • Taron Petrosyan

    (Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3058/10, 61600 Brno, Czech Republic)

  • Kamil Stevanka

    (Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3058/10, 61600 Brno, Czech Republic)

  • Daniel Vlcek

    (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, V Holesovickach 2, 18000 Prague 8, Czech Republic)

  • Pavel Gejdos

    (Brno University of Technology, CEITEC-Central European Institute of Technology, Purkynova 656/123, 61200 Brno, Czech Republic)

Abstract

Steady state flow boiling experiments were carried out on several heated tubes with outer diameter 9.14 mm at outlet pressures 120, 200 and 300 kPa, inlet temperatures 64, 78 and 91 °C and approximately 400, 500, 600 and 800 kg/(m 2 ·s) mass flux entering the vertically aligned test annulus until critical heat flux (CHF) was reached. The tubes were made of Inconel 625 with a length of 400 mm. The Inconel tubes were tested in three different modifications as smooth, abraded with 150 grit sandpaper and bead blasted. Multiple experiments were repeated on the same specimen to investigate the effect of surface characteristic changes (i.e., wettability, roughness and oxide layer morphology) on the occurrence of CHF. Despite the changes in initial wettability, the CHF dependency was not clearly observed, however, the changes in roughness led to an increase in CHF. The total number of 115 experimental runs were collected and the results were also compared with other literature experimental data.

Suggested Citation

  • Ladislav Suk & Taron Petrosyan & Kamil Stevanka & Daniel Vlcek & Pavel Gejdos, 2020. "Experimental Investigation of Critical Heat Flux on Different Surfaces at Low Pressure and Low Flow," Energies, MDPI, vol. 13(19), pages 1-23, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5205-:d:424300
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    References listed on IDEAS

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    1. Shoukat A. Khan & Muataz A. Atieh & Muammer Koç, 2018. "Micro-Nano Scale Surface Coating for Nucleate Boiling Heat Transfer: A Critical Review," Energies, MDPI, vol. 11(11), pages 1-30, November.
    2. Hesam Moghadasi & Navid Malekian & Hamid Saffari & Amir Mirza Gheitaghy & Guo Qi Zhang, 2020. "Recent Advances in the Critical Heat Flux Amelioration of Pool Boiling Surfaces Using Metal Oxide Nanoparticle Deposition," Energies, MDPI, vol. 13(15), pages 1-49, August.
    3. Zhi-Chuan Sun & Xiang Ma & Lian-Xiang Ma & Wei Li & David J. Kukulka, 2019. "Flow Boiling Heat Transfer Characteristics in Horizontal, Three-Dimensional Enhanced Tubes," Energies, MDPI, vol. 12(5), pages 1-25, March.
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    Cited by:

    1. Liaofei Yin & Zhonglin Yang & Kexin Zhang & Yingli Xue & Chao Dang, 2023. "Heat Transfer of Water Flow Boiling in Nanostructured Open Microchannels," Energies, MDPI, vol. 16(3), pages 1-11, January.

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