缠绕管换热器壳侧性能研究进展  

Review on shell side performance of spiral wound heat exchanger

作　　者：沃阳 江国和[1] 顾骁勇 WO Yang;JIANG Guo-he;GU Xiao-yong(Shanghai Maritime University,Merchant Marine College,Shanghai 201306)

机构地区：[1]上海海事大学商船学院,上海201306

出　　处：《化学工程》2021年第7期37-41,55,共6页Chemical Engineering(China)

基　　金：上海市科学技术委员会项目(18DZ1202902)。

摘　　要：近年来缠绕管换热器在LNG气液化领域得到大量使用,文中在缠绕管换热器壳侧性能研究现状的基础上,讨论了几何结构参数对壳侧换热的影响,发现壳侧努塞尔数和压降随管外径缠绕管换热器管外径、层数增加而增大,随管间距与管径比、垫条厚度增大而减小。阐述了当前缠绕管换热器数值模拟的简化方法,一方面由于缠绕管内部结构比较复杂,整体模型建模计算量大,将模型简化为最小周期性能够极大地减少模拟运算成本,另一方面采用恒壁温边界条件也能够提高计算效率,并且误差在10%以内,总结了改善换热效果的措施。目前FLNG、FSPO平台使用缠绕管换热器较多,分析了海上浮动不同工况对换热的影响。文中旨在当前的研究基础上,预测未来的发展现状,为缠绕管换热器的进一步发展提供一定的借鉴。The spiral wound heat exchanger has been widely used in the field of LNG gasification in recent years.Based on the current research status of the shell side performance of the spiral wound heat exchangers,discusses the influence of the geometrical parameters on the shell side heat transfer was discussed.It is found that the Nusselt number and pressure drop on the shell side increase with the increase of the tube external diameter and the number of layers,but decrease with increasing the pitch to tube diameter ratio and the thickness of the spacing bars.The current simplified methods for numerical simulation of the spiral wound heat exchanger are described.On the one hand,the internal structure of the wound tube is relatively complicated,and the overall model modeling calculation is large.Simplifying the model to the smallest periodicity can greatly reduce the simulation calculation cost.The use of constant wall temperature boundary conditions can also improve the calculation efficiency,and the deviation is within 10%.Measures to improve the heat transfer effect are summarized.At present,FLNG and FSPO platforms use more winding tube heat exchangers,and the influences of different working conditions of floating offshore on heat transfer are analyzed.This article aims to predict the future development status based on the current research and provide some reference for the further development of the wound tube heat exchanger.

关 键 词：缠绕管换热器 壳侧性能 结构参数 数值模拟 简化方法 

分 类 号：TK124[动力工程及工程热物理—工程热物理]