壳程结构设计对管壳式换热器传热影响讨论

DISCUSSING ON SHELL STRUCTURE DESIGNS AFFECTING HEAT EFFICIENCY OF THE TUBULAR HEAT EXCHANGER

结合管壳式换热器Tinker壳程流体流动模型的分析,介绍了影响换热器传热效率的一些壳程结构设计因素,文中详尽地介绍了防短路结构、进出口结构、换热器壳侧纵向隔板等方面对传热效果的影响;并针对性地对弓形折流板、折流杆以及螺旋板等常用壳程强化传热结构的传热性能进行了分析和比较,对提高换热器换热效率的几种壳程结构设计进行了总结。

Based on the analysis on the fluid flow model of Tinker shell side of the tubular heat exchangers,this paper introduces some shell structure designs that affect heat efficiency of the tubular heat exchangers.It elaborates on the effects of the short circuit prevention structure,inlet or outlet structure,the longitudinal pass partition plate on the sides of the heat exchangers on heat transfer.The paper also makes corresponding analysis and comparison of the heat transfer performance of some commonly used shell side enhanced heat transfer structure,including segmental baffle,rod-baffle and spiral baffle.And it summarizes several shell side structure designs which may improve heat efficiency of the heat exchangers.