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首页> 外文期刊>Heat Transfer Engineering >Effect of Bubble Turbulence and Submergence on Boiling Incipience in Vertical Thermosiphon Reboiler
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Effect of Bubble Turbulence and Submergence on Boiling Incipience in Vertical Thermosiphon Reboiler

机译:立式热虹吸再沸器中气泡湍流和浸没对沸腾开始的影响

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摘要

A detailed study has been carried out to clarify the conditions of boiling incipience phenomena for natural flow in vertical tube thermosiphon reboiler. A semi-empirical model has been proposed that considers the effect of turbulent eddies and submergence for the data available in literature. Boiling incipience in liquid films is influenced both by turbulent eddies and submergence, and their effect is dominant with increasing heat flux. The superheat for boiling incipience was determined experimentally for different types of organic liquids including water, covering a wide range of physical properties. The predicted results from the proposed model and experimental data available in literature show a consistency for all fluids investigated in this study. It has an average absolute relative error of 15% for the proposed unified correlation of all fluid systems together, which have a wide range of thermophysical properties.
机译:已经进行了详细的研究以阐明垂直管式热虹吸再沸器中自然流动的沸腾开始现象的条件。已经提出了一个半经验模型,该模型考虑了湍流和淹没对文献中可用数据的影响。液膜的沸腾开始受涡流和浸没的影响,并且其作用随热通量的增加而占主导地位。对于包括水在内的各种有机液体,通过实验确定了沸腾开始的过热度,涵盖了广泛的物理性质。所提出的模型的预测结果和文献中的实验数据表明,本研究中研究的所有流体均具有一致性。对于所有流体系统,它们具有广泛的热物理特性,建议进行统一关联,其平均绝对相对误差为15%。

著录项

  • 来源
    《Heat Transfer Engineering》 |2008年第3期|p.306-320|共15页
  • 作者

    M. SHAMSUZZOHA; S. S. ALAM;

  • 作者单位

    School of Chemical Engineering and Technology, Yeungnam University, Kyongsan, South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工业用热工设备;
  • 关键词

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