王斯民,孙利娟,宋晨,肖娟,简冠平,张早校,文键

• 1:西安交通大学化学工程与技术学院
• 2:西安交通大学能源与动力学院

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,孙利娟,宋晨,肖娟,简冠平,张早校,文键

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