东南大学学报（自然科学版）2017，Vol.47Issue(1)：61-66,6.DOI:10.3969/j.issn.1001-0505.2017.01.012
三分螺旋折流板的疏液结构对立式冷凝器性能的影响
Influences on performances of vertical condensers with different liquid draining structures of trisection helical baffles
摘要
Abstract
To improve the condensation heat transfer performance of vertical condensers,the experi-ment about condensation heat transfer performance of the shell side was conducted on the enhance-ment features of trisection helical baffles with different liquid draining structures.The studied vertical condenser used a common shell with replaceable cores,and the testing cores included six trisection helical baffle tube bundles and a segment one.The experimental results show that the shell side con-densation heat transfer coefficient of the vertical trisection helical baffle condensers is 1 .48 to 2.65 times than that of the segment one,in which the shell side heat transfer coefficient in the best scheme adopting dual-thread and variable angled baffles with liquid dam increases 144.4% than that of the segment one.The shell side heat transfer coefficients in single thread variable angle schemes are,on average,25 .47% higher than the corresponding single thread single angle ones;the shell side heat transfer coefficient in the dual-thread variable angle helical baffle schemes is,on average,15.74%higher than the corresponding single-thread variable angle ones;and the shell side heat transfer coef-ficients in the helical baffle schemes with liquid dam are,on average,6 .37%higher than the corre-sponding ones without liquid dam.关键词
立式冷凝器/三分螺旋折流板/换热系数/变角度折流板/挡液堰Key words
vertical condensers/trisection helical baffle/heat transfer coefficient/variable angle baffles/liquid dam分类
能源科技引用本文复制引用
周家豪,吴嘉峰,陈亚平..三分螺旋折流板的疏液结构对立式冷凝器性能的影响[J].东南大学学报（自然科学版）,2017,47(1):61-66,6.基金项目
国家自然科学基金资助项目（51276035，51206022）． （）
