鱼鳍型涡发生器强化管翅式换热器传热  

Heat Transfer Enhancement in Fin-and-Tube Heat Exchanger by Fish Fin-Shaped Vortex Generator

作　　者：张鹏程 张丽 李雅侠[1] 冯颖[1] 张静[1] ZHANG Pengcheng;ZHANG Li;LI Yaxia;FENG Ying;ZHANG Jing(School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China;School of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142 [2]沈阳化工大学化学工程学院,辽宁沈阳110142

出　　处：《辽宁化工》2024年第7期1117-1121,共5页Liaoning Chemical Industry

基　　金：辽宁省教育厅项目(项目编号:LJKMZ20220764、LJ2019001);辽宁百千万人才计划项目(项目编号:2020B085);辽宁省应用基础研究计划项目(项目编号:2023JH2/101300006);沈阳市科技局项目(项目编号:RC190323)。

摘　　要：提出了一种鱼鳍型涡发生器,并将其应用在管翅式换热器中强化传热。采用数值模拟方法研究了鱼鳍型涡发生器安装方式对换热器中流体流动和传热的影响,分析了流体流经涡发生器前后的压力变化。结果表明:涡发生器以common-flow-up方式安装在圆管下游时传热j因子提高了46.6%,摩擦因子提高了24.4%,与以common-flow-down方式安装于圆管上游相比,圆管后方的负压区更小,流动阻力更小,冷热流体的混合效果更好,因而具有更好的强化传热效果。A fish fin-shaped vortex generator was proposed and applied to heat transfer enhancement of fin-and-tube heat exchanger.The effects of vortex generator installation on flow and heat transfer in heat exchangers were studied using numerical simulation methods,and the pressure changes before and after the fluid flow through the vortex generator were analyzed.The results showed that when the vortex generator was installed downstream of the circular tube in a common-flow-up manner,the heat transfer j factor increased by 46.6%,and the friction factor increased by 24.4%.Compared with installing the vortex generator in a common-flow-down configuration upstream of a circular tube,installing it in a common-flow-up configuration downstream of the tube resulted in a smaller negative pressure zone behind the tube,lower flow resistance,and the mixing effect of hot and cold fluids was better,so it had a better enhanced heat transfer effect.

关 键 词：管翅式换热器 鱼鳍型涡发生器 强化传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]