[1]易哲宇,吴嘉峰,陈亚平,等.管排与V形丝网填料交替结构中液膜流动可视化实验[J].东南大学学报(自然科学版),2015,45(3):497-502.[doi:10.3969/j.issn.1001-0505.2015.03.015]
 Yi Zheyu,Wu Jiafeng,Chen Yaping,et al.Visualization study on liquid film flow pattern in tubes and V-shaped mesh alternating structure[J].Journal of Southeast University (Natural Science Edition),2015,45(3):497-502.[doi:10.3969/j.issn.1001-0505.2015.03.015]
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管排与V形丝网填料交替结构中液膜流动可视化实验()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第3期
页码:
497-502
栏目:
能源与动力工程
出版日期:
2015-05-20

文章信息/Info

Title:
Visualization study on liquid film flow pattern in tubes and V-shaped mesh alternating structure
作者:
易哲宇吴嘉峰陈亚平纪光菊
东南大学能源与环境学院, 南京 210096
Author(s):
Yi Zheyu Wu Jiafeng Chen Yaping Ji Guangju
School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
强化吸收 流动形态 不锈钢丝网填料 交替结构
Keywords:
absorption enhancement flow pattern stainless steel mesh packing alternating structure
分类号:
TK124
DOI:
10.3969/j.issn.1001-0505.2015.03.015
摘要:
搭建了管排和填料交替结构中液膜流动的可视化实验装置,并对管排和V形不锈钢丝网填料交替结构以及无丝网的光管排中的溴化锂溶液流动进行了观察实验.通过对比溴化锂溶液在单列光管排和管排加丝网填料交替结构中的流动特征,分析了V形丝网填料对溶液流动的引流、布液和收集飞溅液体的有益作用.溴化锂溶液在交替结构中流动时,溶液在填料上依附于丝网表面向下流淌,并由丝网填料导流至下层管子上端.这种结构能够加强溶液混合,减小溶液的飞溅率和管子表面的干斑比例,有利于增加溶液与蒸汽接触的时间和传质面积,从而增强溶液吸收的驱动势,有利于吸收传热传质的强化.
Abstract:
A visualization test rig was built to observe the LiBr solution flowing in a column of tubes and V-shaped mesh alternating structure. The visual experimental investigation was conducted for the alternating structure and the column of bare tubes. The beneficial impacts of the V-shaped mesh packing inserts between tubes in collecting, guiding and distributing the fluid flow were demonstrated and the different features of LiBr solution flow patterns were investigated in bare tube column and the alternating structure. It is shown that when the LiBr solution flows down from the outer surface of the upper tube, the V-shaped mesh packing can guide and distribute the fluid well onto the lower tube, which greatly decrease both the spatter loss rate of splashed liquid and the dry spots ratio of the lower tube surface and promote solution mixing as well. All these features can expand the absorption time and area, enhance the absorption driving potential, and therefore, enhance the absorption heat and mass transfer.

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备注/Memo

备注/Memo:
收稿日期: 2014-12-21.
作者简介: 易哲宇(1989—),男,硕士生;陈亚平(联系人),男,博士,教授,博士生导师,ypgchen@sina.com.
基金项目: 国家自然科学基金资助项目(51206022,51276035).
引用本文: 易哲宇,吴嘉峰,陈亚平,等.管排与V形丝网填料交替结构中液膜流动可视化实验[J].东南大学学报:自然科学版,2015,45(3):497-502. [doi:10.3969/j.issn.1001-0505.2015.03.015]
更新日期/Last Update: 2015-05-20