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Nucleate Pool Boiling Heat Transfer from High-Flux Tube with Dielectric Fluid HFE-7200

Author

Listed:
  • Abhishek Kumar

    (Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan)

  • Kuo-Shu Hung

    (Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, Zhudong 310, Taiwan)

  • Chi-Chuan Wang

    (Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan)

Abstract

In the present experimental study, nucleate pool boiling heat transfer measurements of two high-flux tubes (sample A and sample B) were conducted at atmospheric pressure with HFE-7200 as the working fluid. Both high-flux tubes were made from a sintered Cu-Ni (high-flux) alloy powder. The porous high-flux surface was coated inside the test tube and it is tested within the heat flux ranging from 2.6 to 86 kW/m 2 . The major difference between sample A and sample B was the coating thickness, where sample B (0.6 mm) was much larger than that of sample A (0.07 mm). Both tubes showed about three times enhancement in heat transfer coefficient (HTC) when compared to plain tube. Even though sample B contained a higher HTC than sample A, it also revealed a faster level-off phenomenon regarding the HTC vs. wall superheat. The major parameter which characterizes the boiling performance of high-flux tube was the ratio of coating thickness to pore diameter which also yielded different trends upon HTC vs. wall superheat amid sample A and B. It was found that the porous based Nishikawa correlation can well predict the performance of sample A but not sample B. This is because the ratio of coating thickness to pore diameter is far outside the applicable range of the Nishikawa correlation. Hence, a modified Nishikawa correlation is proposed. The predicted capability of the proposed modified Nishikawa correlation against sample A and sample for HTC was within ±28% deviation. The standard mean deviation of the Nishikawa correlation with experimental data for sample A and sample B was 0.302 (12.48%) and 5.64 (73%), respectively.

Suggested Citation

  • Abhishek Kumar & Kuo-Shu Hung & Chi-Chuan Wang, 2020. "Nucleate Pool Boiling Heat Transfer from High-Flux Tube with Dielectric Fluid HFE-7200," Energies, MDPI, vol. 13(9), pages 1-16, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:9:p:2313-:d:354596
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    Citations

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    Cited by:

    1. Uzair Sajjad & Imtiyaz Hussain & Muhammad Sultan & Sadaf Mehdi & Chi-Chuan Wang & Kashif Rasool & Sayed M. Saleh & Ashraf Y. Elnaggar & Enas E. Hussein, 2021. "Determining the Factors Affecting the Boiling Heat Transfer Coefficient of Sintered Coated Porous Surfaces," Sustainability, MDPI, vol. 13(22), pages 1-19, 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. Denis Kuznetsov & Aleksandr Pavlenko, 2022. "Heat Transfer during Nitrogen Boiling on Surfaces Modified by Microarc Oxidation," Energies, MDPI, vol. 15(16), pages 1-14, August.

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