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Heat Transfer Performance of an Edge-Shaped Finned Tube

机译：边形翅片管的传热性能

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摘要

The third-generation heat transfer technologies, such as three-dimensional fin and dimple, are still important means of improving energy efficiency and will continue to be challenging issues. This paper presents condensation heat transfer performance of an edge-shaped finned tube fabricated by a ploughing-extruding process. The edge-shaped finned tube integrates more than one heat transfer enhancement technology and can enhance the heat transfer capacity greatly. It is seen that the overall heat transfer coefficient and heat flux increase with inlet velocity of cold water increasing, and decrease with inlet temperature of cold water increasing, whereas the shell-side heat transfer coefficient decreases with inlet velocity of cold water increasing and increases with inlet temperature of cold water increasing. At the same inlet velocity, the shell-side heat transfer coefficient for the edge-shaped finned tube is improved by 5-7 times compared to that of a smooth tube. At the same temperature difference between wall and vapor, the shell-side heat transfer coefficient is also higher than what had been reported in the literature. The shell-side heat transfer coefficient of the edge-shaped finned tube decreases with the increase of fabrication parameter feed at the same inlet velocity or inlet temperature of cold water.
机译：第三代传热技术，例如三维翅片和酒窝，仍然是提高能源效率的重要手段，并将继续成为具有挑战性的问题。本文介绍了通过犁挤压工艺制造的边缘形翅片管的冷凝传热性能。边缘形翅片管集成了多种传热增强技术，可以大大提高传热能力。可以看出，总的传热系数和热通量随着冷水入口速度的增加而增加，并随着冷水入口温度的增加而降低，而壳侧传热系数随着冷水入口速度的增加而降低，并随冷水入口速度的增加而增加。冷水入口温度升高。在相同的入口速度下，与光滑管相比，边缘形翅片管的壳侧传热系数提高了5-7倍。在壁和蒸气之间的相同温度差下，壳侧的传热系数也高于文献报道的传热系数。在相同的入口速度或相同的入口温度下，边缘形翅片管的壳侧传热系数随着制造参数的增加而减小。

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  • 来源
    《Heat Transfer Engineering》 |2015年第8期|574-581|共8页
  • 作者

    ZHEN-PING WAN; XIAO-WU WANG; YONG TANG;

  • 作者单位

    Key Laboratory of Surface Functional Structure Manufacturing of Guangdong Higher Education Institutes, South China University of Technology, Guangzhou, China;

    Department of Physics, School of Science, South China University of Technology, Guangzhou Tang, China;

    Key Laboratory of Surface Functional Structure Manufacturing of Guangdong Higher Education Institutes, South China University of Technology, Guangzhou, China;

  • 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
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