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.
作者
李斌
孙晓明
张伟
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)
出处
《广东化工》
CAS
2018年第18期5-7,共3页
Guangdong Chemical Industry
关键词
弓形折流板
螺旋折流板
数值模拟
阻力
换热
continuous helical baffle
helix angle
numerical simulation
resistance
heat transfer
