王斯民¹,孙利娟¹,宋晨¹,肖娟¹,简冠平¹,张早校¹,文键²

• 1:西安交通大学 化学工程与技术学院， 陕西 西安 710049
• 2:西安交通大学 能源与动力学院， 陕西 西安 710049

摘要(Abstract)：

为强化折流杆换热器（RBHEs）的壳程传热，提出了用螺旋扁管代替传统圆管作为换热管应用于RBHEs，比较了螺旋扁管RBHES和传统圆管RBHEs的流动、传热和综合性能。结果表明：螺旋扁管RBHEs的管间速度更大，分布更加均匀；贴近换热管的壁面处，湍动能更大，流体温度更高。当入口速度低时，螺旋扁管RBHEs的传热系数大于圆管RBHEs，当入口速度高时，螺旋扁管RBHEs的传热系数小于圆管RBHEs。螺旋扁管RBHEs的压降比圆管RBHEs小33.60%。螺旋扁管RBHEs的综合性能评价指标（PEC）比圆管RBHEs的提高了65%~152%，且低速入口条件下，提高作用更明显。

关键词(KeyWords)： 折流杆换热器;螺旋扁管;圆管;数值模拟;传热强化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（51676146）；中央高校基本科研业务费专项资金（xjj2018202）。

作者(Author): 王斯民¹,孙利娟¹,宋晨¹,肖娟¹,简冠平¹,张早校¹,文键²

DOI: 10.3969/j.issn.1003-9015.2020.01.010

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