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首页> 外文期刊>International Journal of Heat and Mass Transfer >Windbreak walls reverse the negative effect of crosswind in short natural draft dry cooling towers into a performance enhancement
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Windbreak walls reverse the negative effect of crosswind in short natural draft dry cooling towers into a performance enhancement

机译：防风墙可逆转短自然通风干式冷却塔中侧风的负面影响，从而提高性能

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摘要

Crosswind effect on the cooling performance of large natural draft dry cooling towers (NDDCT) has been verified to be unfavourable by many researchers. Small size natural draft cooling towers (height ＜30 m) proposed for geothermal and other renewable power plants are expected to be more negatively affected. CFD modelling has been carried out to numerically analyse the heat transfer performance of a 15 m-high small NDDCT under different crosswind speeds. Simulations show that, at certain crosswind speeds, the crosswind significantly degrades the cooling performance. However, the negative effect of the crosswind can be turned into positive in small natural draft cooling towers by introducing windbreak walls that guide the air mobilised by crosswind through the heat exchangers. When windbreak walls are used, the results show that the tower performance improves with increased crosswind velocity.
机译：许多研究人员已经证明，侧风对大型自然通风干式冷却塔（NDDCT）的冷却性能的影响是不利的。拟为地热和其他可再生能源发电厂建造的小型自然通风冷却塔（高度<30 m）预计将受到更大的负面影响。进行了CFD建模，以数值分析15m高的小NDDCT在不同侧风速度下的传热性能。仿真表明，在一定的侧风速度下，侧风会大大降低冷却性能。然而，在小型自然通风冷却塔中，侧风的负面影响可以通过引入防风墙来引导，这些防风墙引导通过侧风移动的空气通过热交换器。当使用防风墙时，结果表明塔的性能随侧风速度的提高而提高。

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  • 来源
  • 作者

    Y. Lu; Z. Guan; H. Gurgenci; Z. Zou;

  • 作者单位

    Queensland Ceothermal Energy Centre of Excellence, Qld 4072, Australia School of Mechanical and Mining Engineering, The University of Queensland, Qld 4072, Australia;

    Queensland Ceothermal Energy Centre of Excellence, Qld 4072, Australia School of Mechanical and Mining Engineering, The University of Queensland, Qld 4072, Australia;

    Queensland Ceothermal Energy Centre of Excellence, Qld 4072, Australia School of Mechanical and Mining Engineering, The University of Queensland, Qld 4072, Australia;

    Queensland Ceothermal Energy Centre of Excellence, Qld 4072, Australia School of Mechanical and Mining Engineering, The University of Queensland, Qld 4072, Australia;

  • 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

    Crosswind; Natural draft cooling tower; Windbreak wall; CFD modelling; Numerical simulation;

    机译：侧风自然通风冷却塔;防风墙;CFD建模;数值模拟;

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