齿状凹槽型扭带深度比对管内传热特性的影响  

Effect of Depth Ratio of Toothed Groove Twisted Strip on Heat Transfer Characteristics in Tube

作　　者：张春梅[1] 李宇轩 刘彬 杨鹏达 ZHANG Chun-mei;LI Yu-xuan;LIU Bin;YANG Peng-da(Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China)

机构地区：[1]沈阳化工大学,辽宁沈阳110142

出　　处：《当代化工》2023年第7期1739-1743,共5页Contemporary Chemical Industry

基　　金：辽宁省自然科学基金(项目编号:2019MS259)。

摘　　要：为探究齿状凹槽型扭带的凹槽深度比e对换热管换热特性的影响规律,通过数值模拟方法,在雷诺数Re=800~1600范围内恒壁温条件下,分别对内置深度比e为1/3、1/2、2/3、1的齿状凹槽型扭带管内传热性能进行了探究。研究结果显示:凹槽深度越大,努塞尔数Nu与PEC值均随凹槽深度的增加而增大,其中凹槽深度比e=1时换热管的PEC值明显高于其他扭带。In order to explore the influence law of the groove depth ratio e of the toothed grooved twisted tape on the heat transfer characteristics of the heat exchange tube,the heat transfer performance of the toothed grooved twisted tape tube with the built-in depth ratio e=1/3,e=1/2,e=2/3 and e=1 was studied by numerical simulation under the condition of constant wall temperature in the range of Reynolds number Re=800~1600.The results showed that the larger the groove depth was,the Nusselt number Nu and PEC increased with the increase of groove depth.When the groove depth e=1,the PEC value of heat exchange tube was significantly higher than that of other twisted bands.

关 键 词：努塞尔数 齿状凹槽型扭带 深度比 综合性能评价因子 数值模拟 

分 类 号：TQ053.6[化学工程]