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Experimental Investigation on Critical Heat Flux in Horizontal Tube

[+] Author Affiliations
Peng Chuanxin, Zan Yuanfeng

Nuclear Power Institute of China, Chengdu, China

Paper No. ICONE26-81107, pp. V06AT08A010; 5 pages
doi:10.1115/ICONE26-81107
From:
  • 2018 26th International Conference on Nuclear Engineering
  • Volume 6A: Thermal-Hydraulics and Safety Analyses
  • London, England, July 22–26, 2018
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5148-7
  • Copyright © 2018 by ASME

abstract

The critical heat flux (CHF) in horizontal tube under low flow condition is investigated in this paper. It is found that the boiling crisis occurs at the upper surface of the horizontal tube. According to the exit quality and flow pattern, the category of boiling crisis in the horizontal tube under low flow is considered to be Dryout. The prediction results of Bowring correlation and Lookup table are much larger than the experimental data. Because the Bowring correlation and Lookup table are proposed for the CHF prediction of vertical round tube. The distribution of liquid film in horizontal annular flow is asymmetrical due to gravity. The non-uniform distribution of the liquid film reduces the CHF.

Copyright © 2018 by ASME

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