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

作　　者：胡豹 邹琳玲[1] 刘红姣[1] 晋梅[1] HU Bao;ZOU Lining;LIU Hongjiao;JIN Mei(Jianghan University,Wuhan Hubei 430056,China;Yangtze Memory Technologies Co.,Ltd.,Wuhan Hubei 430056,China)

机构地区：[1]江汉大学,湖北武汉430056 [2]长江存储科技有限责任公司,湖北武汉430056

出　　处：《辽宁化工》2024年第4期533-536,共4页Liaoning Chemical Industry

基　　金：江汉大学校级科研项目(NO.2021yb015)。

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%。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 

分 类 号：TQ015[化学工程]