双螺旋结构螺旋折流板换热器试验研究Experimental Study of Helical Baffled Heat Exchanger with Double Helical Structure
高晓东,冯霄
摘要(Abstract)：
螺旋折流板换热器中壳程的流动方式与单弓形结构下具有很大的差别,在采用扇形板拼接而成的螺旋折流板结构中采用双螺旋结构来布置更多的折流板,减少流体在扇形板拼接处的漏流,使壳程流体流动更接近于平推流。分别以重柴油和水作为壳程介质,对普通螺旋折流板以及双螺旋结构螺旋折流板的传热性能、阻力性能进行试验研究,发现双螺旋结构在相同Re时,阻力提高9.9%和6.15%,Nu提高14.12%和11.72%,同时可以增大单位压降的Nu。
关键词(KeyWords)： 螺旋折流板换热器;双螺旋结构;传热;阻力
基金项目(Foundation):
作者(Author): 高晓东,冯霄
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