高黏度流体下折流板结构对管壳式换热器传热综合性能的影响
Effect of Baffle Structure on Comprehensive Heat Transfer Performance of Shell-and-tube Heat Exchanger for High Viscosity Fluid
胡豹 1邹琳玲 2刘红姣 2晋梅2
作者信息
- 1. 江汉大学,湖北 武汉 430056;长江存储科技有限责任公司,湖北 武汉 430056
- 2. 江汉大学,湖北 武汉 430056
- 折叠
摘要
针对高黏度流体在弓形折流板管壳式换热器中综合传热性能低的问题,采用甘油作为壳程高黏度流体模型介质,通过三维数值模拟计算方法对其在弓形折流板和三分螺旋折流板管壳式换热器的壳程流动特性和传热综合性能进行研究.结果表明:甘油在三分螺旋折流板换热器壳程中呈螺旋状流动状态,相比于弓形折流板而言,虽然传热性能降低,但有效降低了壳程压降,热增强因子 TEF提升了4.84%～28.95%.
Abstract
Aiming at the problem of low comprehensive heat transfer of shell-and-tube heat exchanger with segmental baffles for high viscosity fluid,taking the high viscosity glycerol as the shell-side model medium fluid,the shell side heat transfer performance of shell-and-tube heat exchanger with segmental baffles and trisection helical baffles were studied by three-dimensional numerical simulation.The results showed that the glycerol high viscosity fluid in the shell-side of heat exchanger with trisection helical baffles exhibited a spiral flow state,which could decrease the heat transfer coefficient and effectively reduce the pressure drop in the shell-side compared with shell-and-tube heat exchanger with segmental baffle,as a result,thermal enhancement TEF factor of the comprehensive performance of heat exchanger with trisection helical baffles could be improved by 4.84%～28.95%.
关键词
三分螺旋折流板/弓形折流板/数值模拟/综合性能Key words
Trisection helical baffle/Segmental baffle/Numerical simulation/Comprehensive heat transfer引用本文复制引用
基金项目
江汉大学校级科研项目(2021yb015)
出版年
2024
NETL
NSTL
万方数据