折流板位置对换热器性能的影响  

Heat Exchangers for Different Baffle Spacing

作　　者：王淳[1] 马贵阳[1] 李高萍[2] 

机构地区：[1]辽宁石油化工大学储运与建筑工程学院,辽宁抚顺113001 [2]辽宁科技学院,辽宁本溪117022

出　　处：《工业加热》2008年第6期63-65,共3页Industrial Heating

摘　　要：采用FLUENT数值模拟方法,研究了简化模型下弓形折流板和螺旋折流板换热器,对应于不同间距/螺距时,流动参量的变化对换热器整体流动与传热性能的影响,进而研究非等距换热器。结果表明,两种结构对应的壳程压力损失和换热系数均随壳程流量的增加而增大,而螺旋折流板结构单位压降下换热系数大于弓形折流板,并且其性能受折流板螺距变化的影响较小,体现了螺旋折流板结构的优越性。为进一步研究非等距型换热器提供了依据。A FLUENT method was applied to investigate the preformance of heat exchangers with different baffle spacing and flow parameters, which was based on a sinplified model for helical and segmental baffle structures respectively and then study the different equidistance heat exchanger. The results indicate that shell side pressure drop and heat transfer coefficient shoud be raised with the increase of mass flow rate both for helical and segmental baffles.And the heat transfer coefficient under unit pressure drop for helical baffles is large than that for segmental baffles, which demonstracts the advantage of helical structure. The heat exchanger has provided a basis to the different equidistance type studying further.

关 键 词：换热器 螺旋折流板 弓形折流板 非等距 

分 类 号：TF066.21[冶金工程—冶金物理化学]