杨繁昌,刘江,王明勇,翁培奋,张宇琪

• 1:上海电力大学能源与机械工程学院
• 2:上海热交换系统节能工程技术研究中心
• 3:西安热工研究院有限公司

摘要(Abstract)：

为改善冷却塔雨区流场结构，进一步增大通风量，在已有平板型导风板基础上，提出一种布置在雨区的低风阻流线型导风板。设计工况下，以常规冷却塔和在各高度布置平板型导风板的改造塔为参考对象，分析5种不同布置高度（1/6、1/3、1/2、2/3、5/6进风高度）下低风阻流线型导风板对整塔通风量、塔内流场结构和温度分布等参数的影响。结果表明：随着导风板布置高度的升高，塔内各区域的空气分配发生了变化，对内区填料换热产生了明显影响，使整塔冷却性能呈现出先提升后下降的趋势；在进风口高度2/3处布置流线型导风板时，通风量增量与填料区底部平均温度减量达到最优值，冷却塔性能改善效果最佳，此时相较于常规冷却塔，循环水温降相对增长2.65%，通风量相对增长2.78%。此外，相较于最佳布置高度的平板型导风板，采用低风阻流线型导风板改造后循环水温降相对增长1.2%。

关键词(KeyWords)： 自然通风湿式冷却塔;冷却性能;流线型导风板;数值计算

Abstract:

Keywords:

基金项目(Foundation): 上海市2020年度“科技创新行动计划”社会发展科技攻关项目（20dz1205302）~~

作者(Author): 杨繁昌,刘江,王明勇,翁培奋,张宇琪

DOI: 10.19666/j.rlfd.202401005

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