Field synergy analysis of different flow patterns in falling-film dehumidification system with horizontal pipes

作     者：NIU Run-ping KUANG Da-qing WANG Shi-zheng CHEN Xiao-yi 牛润萍;匡大庆;王世政;陈潇义

作者机构：Beijing Engineering Research Center of Sustainable Energy and BuildingsBeijing University of Civil Engineering and ArchitectureBeijing 100044China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2020年第27卷第8期

页      面：2353-2366页

核心收录：

学科分类：08[工学] 081404[工学-供热、供燃气、通风及空调工程] 0814[工学-土木工程] 

基　　金：Project(2016YFC0700100)supported by the National Key R&D Program of China Project(JDJQ20160103)supported by the Promotion of the Connotation Development Quota Project of Colleges and Universities-Outstanding Youth of Architectural University,China 

主　　题：film falling between horizontal pipes fluent software flow pattern of liquid film synergy angle mass and heat transfer 

摘      要：Effects of the flow pattern of intertubular liquid film on mass and heat transfer synergies in a falling-film dehumidification system with horizontal pipes are studied.A flow model of the dehumidifying solution between horizontal pipes is established using Fluent software,the rule of transitions of the flow pattern between pipes is studied,critical Reynolds numbers of flow pattern transitions are obtained,and the accuracy of the model is verified by *** mass transfer synergy angle and heat transfer synergy angle are respectively used as evaluation criteria for the mass transfer synergy and heat transfer synergy,and distribution laws of the synergy angles for droplet,droplet columnar and curtain flow patterns are *** results show that the mass transfer synergy angles corresponding to droplet,droplet columnar and curtain flow patterns all rise to a plateau with *** mean mass-transfer synergy angle is 98°for the droplet flow pattern,higher than 96.5°for the droplet columnar flow pattern and 95°for the curtain flow *** results show that the mass transfer synergy of the droplet flow pattern is better than that of the droplet columnar flow pattern and that of the curtain flow pattern.