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Burnout Investigation of Small Diameter Tubes Immersed in Nanofluids

Author

Listed:
  • Janusz T. Cieśliński

    (Faculty of Mechanical Engineering and Ship Technology, Institute of Energy, Gdansk University of Technology, Narutowicza 11/12, 80233 Gdańsk, Poland)

  • Katarzyna Ronewicz

    (AIC S.A., Rdestowa 41, 81577 Gdynia, Poland)

Abstract

This paper deals with research into pool boiling critical heat flux (CHF) of water–Al 2 O 3 , water–TiO 2 and water–Cu nanofluids on horizontal stainless steel tubes. The experiments were conducted under atmospheric pressure. Nanoparticles were tested at concentrations of 0.001%, 0.01%, 0.1% and 1% by weight. Ultrasonic vibration was used in order to stabilize the dispersion of the nanoparticles. Although dispersants were not used to stabilize the suspension, the solutions tested showed satisfactory stability. Experimental measurements were performed with stainless steel tubes of three outside diameters: 1.6, 3 and 5 mm. Enhancement of CHF was observed to be independent of the concentration and material of the nanoparticles and tube diameter, with simultaneous heat transfer degradation. Built up during the boiling process, nanolayers improve substantially the heating surface wettability. A correlation is suggested for the CHF prediction during pool boiling of nanofluids.

Suggested Citation

  • Janusz T. Cieśliński & Katarzyna Ronewicz, 2021. "Burnout Investigation of Small Diameter Tubes Immersed in Nanofluids," Energies, MDPI, vol. 14(13), pages 1-26, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:3888-:d:583883
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    References listed on IDEAS

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    1. 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.
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