纳米有机工质在环形内肋管内的流动阻力特性研究  

Study on the Flow Resistance Characteristics of Nano-organic Working Fluid in Annular Inner Rib Tube

作　　者：唐铭泽 唐美玲[1] 盛伟[2] 兰先圣 牟宝林 TANG Mingze;TANG Meiling;SHENG Wei;LAN Xiansheng;MU Baolin(School of Energy,Power and Nuclear Technology Engineering,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;Office of Teaching Quality Construction and Performance Evaluation,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province)

机构地区：[1]沈阳工程学院能源动力与核技术工程学院,辽宁沈阳110136 [2]沈阳工程学院质量建设与绩效考核办公室,辽宁沈阳110136

出　　处：《沈阳工程学院学报(自然科学版)》2025年第1期14-19,共6页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：以纳米有机工质作为换热工质,使用Ansys Workbench软件,通过数值模拟的方法比较Cu+R601a、CaO+R600a和Cu+R600a在环形内肋管中的流动阻力,在雷诺数为700~1200范围内对环形内肋管的摩擦系数进行数值模拟,分析了在不同肋间距、肋高、管径条件下换热管内摩擦系数的变化,得出换热管的最佳结构。结果表明:当Cu+R601a作为换热工质时,环肋管的摩擦系数最小;随着肋间距、管径增加,换热管的摩擦系数分别减小4.82%~19.30%、11.03%~31.69%,最佳肋间距、管径分别为35 mm、17 mm;随着肋高增加,换热管的摩擦系数增加14.26%~32.93%,最佳肋高为0.4 mm。In this paper,the nano-organic working fluid is used as the heat transfer medium,and Ansys Workbench software is used to compare the flow resistance of Cu+R601a,CaO+R600a and Cu+R600a in the annular inner ribbed tube by numerical simulation.The friction coefficient of the inner wall of the annular inner ribbed tube is simulated in the range of Re 700~1200.The variation of the friction coefficient f of the heat exchange tube under different rib spacing s,rib height h and pipe diameter d is analyzed,and the optimal pipe structure is obtained.The results show that the ring-stiffened tube f is the smallest when Cu+R601a is used as the heat transfer medium.With the increase of rib spacing and pipe diameter,the heat exchange tube f decreases by 4.82%~19.30%and 11.03%~31.69%respectively,and the optimal rib spacing and pipe diameter are 35 mm and 17 mm respectively.As the rib height increases,the heat exchange tube f increases by 14.26%~32.93%,and the optimal rib height is 0.4 mm.

关 键 词：纳米有机工质 环形内肋管 结构优化 管内摩擦系数 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]