螺旋折流板与弓形折流板换热器性能的数值模拟  

Numerical Simulation of the Performance of Helical Baffle Heat Exchanger and Segmental Baffle Heat Exchanger

作　　者：李斌[1] 孙晓明 张伟[1] 亓航 张亚东 Li Bin;Sun Xiaoming;Zhang Wei;Qi Hang;Zhang Yadong(College of Pipeline and Civil Engineering in China University of Petroleum,Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580

出　　处：《广东化工》2018年第18期5-7,共3页Guangdong Chemical Industry

摘　　要：针对弓形折流板、连续螺旋折流板换热器,采用FLUENT软件,k-ε湍流模型,通过数值模拟的方法比较了4块挡板的弓形折流板换热器和4个螺旋的螺旋折流板换热器的壳程流动与换热性能。结果表明:弓形折流板换热器流动湍动程度强,换热系数更大;螺旋折流板换热器壳程流动呈螺旋状,流动阻力更小;比较单位压降换热系数,螺旋折流板换热器综合性能优于弓形折流板换热器。The flow and heat transfer performance of the shell side of the segmental baffles heat exchanger with 4 baffles and continuous helical baffles heat exchanger with 4 spiral helices were compared by numerical simulation, based on Fluent and k-ε model. The results show that the segmental baffle heat exchanger has strong flow turbulence and larger heat transfer coefficient; helical Baffle heat exchanger shell-side flow is spiral and the flow resistance is smaller; the heat transfer coefficient of unit pressure drop of two heat exchangers is compared, and found that helical baffle heat exchangers have better overall performance than segmental baffle heat exchangers.

关 键 词：弓形折流板 螺旋折流板 数值模拟 阻力 换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]