缠绕管式换热器并管壳程换热数值研究  

Numerical study on shell side heat transfer of wound tube heat exchanger

作　　者：杨发炜 张周卫 周文和[1] Yang Fawei;Zhang Zhouwei;Zhou Wenhe(School of Environment and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070;Research Institute of LNG cryogenic equipment and Automation,Lanzhou Jiaotong University,Lanzhou Gansu 730070)

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]兰州交通大学LNG低温装备及自动化研究所,甘肃兰州730070

出　　处：《石化技术》2022年第5期96-100,51,共6页Petrochemical Industry Technology

摘　　要：本文通过建立单元几何模型,利用流场模拟软件,结合MATLAB编程软件进行研究分析,研究管径和层间距对缠绕管式换热器并管的壳程换热性能的影响。结果表明:换热器壳程的努塞尔数、摩擦阻力系数和综合换热性能随管径的增大而增大,随层间距的减小而增大;在其他结构参数一定的条件下,壳程流体流速超过一定值时,并管的换热效果要优于非并管的。采用模拟计算和编程计算相结合的方法,为缠绕管式换热器并管壳程换热性能的研究和优化设计提供参考。In this paper,by establishing the element geometric model,using the flow field simulation software and MATLAB programming software,the influence of pipe diameter and layer spacing on the shell side heat transfer performance of the parallel tube of the wound tube heat exchanger is studied.The results show that the Nusselt number,friction resistance coefficient and comprehensive heat transfer performance of the shell side of the heat exchanger increase with the increase of pipe diameter and with the decrease of layer spacing;Under the condition of certain other structural parameters,when the fluid velocity on the shell side exceeds a certain value,the heat transfer effect of the combined tube is better than that of the non combined tube.The combination of simulation calculation and programming calculation provides a reference for the research and optimal design of the heat transfer performance of the shell and tube side of the wound tubular heat exchanger.

关 键 词：缠绕管式换热器 并管 壳程流体流动 换热性能 

分 类 号：TE65[石油与天然气工程—油气加工工程] TQ051.5[化学工程]