首页 | 本学科首页   官方微博 | 高级检索  
     检索      

R134a在水平三维内微肋管内的沸腾换热
引用本文:辛明道,周杰,张罡,陈清华,崔文智.R134a在水平三维内微肋管内的沸腾换热[J].工程热物理学报,2001,22(1):95-97.
作者姓名:辛明道  周杰  张罡  陈清华  崔文智
作者单位:重庆大学工程热物理研究所,
基金项目:国家自然科学基金资助项目!(No.59676017)
摘    要:本文以 R134a为工质,在外径为 16 mm的两种不同几何结构的水平三维微肋管内进行了沸腾换热实验,研究了质量流率、热流密度、蒸汽干度等因素对沸腾换热系数的影响。与相同工况下的水平光管比较, 1#微肋管的换热强化因子在1.5~2.1之间,2#微肋管的换热强化因子在1.9~2.8之间。两种三维微肋管的比较结果显示,单位内表面积上具有更多的微肋数目的 2#管的平均沸腾换热系数比 1#管增加了 28~43%。

关 键 词:R134a  三维微肋管  沸腾
文章编号:0253-231X(2001)01-0095-03
修稿时间:2000年4月2日

BOILING IN THE HORIZONTAL TUBES WITH THREE--DIMENSIONAL INNER MICROFIN
XIN Ming-dao,ZHOU Jie,ZHANG Gang,CHEN Qing-Hua,CUI Wen-zhi.BOILING IN THE HORIZONTAL TUBES WITH THREE--DIMENSIONAL INNER MICROFIN[J].Journal of Engineering Thermophysics,2001,22(1):95-97.
Authors:XIN Ming-dao  ZHOU Jie  ZHANG Gang  CHEN Qing-Hua  CUI Wen-zhi
Abstract:Experimental results of R134a boiling in two kinds of three dimensional microfin tubes with 16mm outer diameter are presented. The effects of mass flux, heat flux and vapor quality on the heat transfer coefficients are reported in this paper. Compared to the smooth tube, the heat transfer enhancement ratio of 1# tube is between 1.5 and 2.1, and that of 2# tube is between 1.9 and 2.8. The heat transfer characteristics of the two kinds of tubes are also compared. We find that the average heat transfer coefficients of the 2# tube, which has a greater number of microfins per square centimeter, are 28 - 43% higher than those of the 1# tube.
Keywords:R134a  three-dimensional microfin tubes  boiling
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号