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首页> 外文期刊>International Journal of Heat and Mass Transfer >Critical heat flux of highly subcooled water flow boiling in circular tubes with and without internal twisted tapes under high mass fluxes
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Critical heat flux of highly subcooled water flow boiling in circular tubes with and without internal twisted tapes under high mass fluxes

机译：在高通量下有和没有内部扭曲带的圆形管中沸腾的高度过冷水流的临界热通量

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摘要

This study focuses on the critical heat flux (CHF) of highly subcooled water flow boiling under high mass fluxes, particularly with respect to the thermal-hydraulics analysis in fusion reactor components. The experiments were performed in vertical circular tubes those were uniformly heated by a large AC power supply. Twisted tape was employed to induce swirl flow in order to further enhance the subcooled CHF. This study obtained several high CHF data points in both smooth tubes and twisted-tape tubes, which can enhance relevant high-CHF databases. The influences of thermodynamic quality, mass flux, pressure, and twisted tape on subcooled CHF were discussed. The results show that twisted tapes can allow significant increase in subcooled CHF under high mass fluxes. The CHF enhancement effect is more obvious when using twisted tapes with smaller twist ratios. Available existing subcooled CHF correlations were compared with the experimental data from the present and others' studies for both smooth tubes and twisted-tape tubes. For smooth tubes, the CHF look-up table has satisfactory prediction accuracy. For twisted-tape tubes, a modified correlation of Arment et al. was proposed to predict the swirl-flow subcooled CHF.
机译：这项研究的重点是在高通量下沸腾的高度过冷水流的临界热通量（CHF），特别是在聚变反应堆组件中的热工水力分析方面。实验是在垂直圆管中进行的，这些圆管由大型交流电源均匀加热。为了进一步增强过冷的CHF，使用扭曲的带材引起涡流。这项研究在光滑管和扭曲带管中均获得了多个高CHF数据点，可以增强相关的高CHF数据库。讨论了热力学质量，质量通量，压力和扭曲带对过冷CHF的影响。结果表明，在高质量通量下，扭曲的胶带可以显着增加过冷的CHF。使用扭曲率较小的扭曲带时，CHF增强效果更加明显。将现有的现有过冷CHF相关性与目前和其他人对光滑管和扭曲带管的实验数据进行比较。对于光滑管，CHF查询表具有令人满意的预测准确性。对于扭曲带管，Arment等人的改进的相关性。建议用来预测旋流过冷CHF。

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  • 来源
  • 作者

    Jianguo Yan; Qincheng Bi; Ge Zhu; Laizhong Cai; Qizheng Yuan; Haicai Lv;

  • 作者单位

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China;

    Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CHF; Subcooled water; Twisted tape; Correlation; Fusion reactor;

    机译：CHF;过冷的水;扭曲的胶带;相关性聚变反应堆;

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