基于真实流道的电解质膜除湿三维建模研究  

Research on 3D Modeling of Electrolyte Membrane Dehumidification Based on Real Flow Channel

作　　者：李贺勇 彭惠旺 綦戎辉 张立志[1] LI He-Yong;PENG Hui-Wang;QI Rong-Hui;ZHANG Li-Zhi(Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,China;School of civil engineering,Guang Zhou University,Guangzhou 510006,China)

机构地区：[1]华南理工大学化学与化工学院,广州510640 [2]广州大学土木工程学院,广州510006

出　　处：《工程热物理学报》2021年第6期1384-1389,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51876067);广东省自然科学基金(No.2018B030306014,No.2017A030313264)。

摘　　要：由于结构紧凑、易操作、环保等优点,电解质膜除湿系统引起了众多学者的关注。但以往理论建模多为基于理想化矩形空气流道的1D或2D稳态模型;而实际系统中空气流道不规则且流动不稳定。本文利用Comsol Multiphysics软件,构建了基于真实流道结构的除湿组件三维模型,并对除湿过程起始阶段模拟计算。通过与实验比较,该模型计算结果与实际运行中空气流道内的速度及温湿度场分布吻合度较高。由模拟结果可知导流柱结构的存在会导致空气流动特性的改变,使得靠近空气出口处温度最高、湿度最低,同时,空气流道内的温湿度分布与空气流道结构密切相关。该研究可成功模拟电解质膜除湿过程中真实流道内的不稳定流动及温、湿度特性,有效地提高了这一系统性能的预测精度。Due to the advantages of compact structure,easy operation and environmental protection,the electrolyte membrane dehumidification system has attracted more and more attention of many scholars.However,the previous theoretical model was mostly 1D or 2D steady-state models based on idealized rectangular air flow channels.Actually,air flow channels are usually irregular and the flow is unstable during operation.In this paper,a 3D model of the dehumidification component based on the real air flow channel structure was constructed using the Comsol Multiphysics software,and the initial stage of the dehumidification process was numerically simulated.Compared with the experiment,the calculation results of the model were in good agreement with the velocity,temperature and humidity field distribution in the air flow channel during actual operation.According to the simulation results,it could be seen that the presence of the diversion column structure would lead to the changes in the air flow characteristics,making the temperature near the air outlet was the highest and the humidity was the lowest.Simultaneously,the distribution of temperature and humidity in the flow channel was closely related to the structure of the air flow channel.The study could calculate the unstable flow and temperature and humidity characteristics of the actual flow channel successfully during the dehumidification of the electrolyte membrane,and improve the prediction accuracy of the system performance effectively.

关 键 词：流道 电解 空气除湿 三维模型 

分 类 号：TK123[动力工程及工程热物理—工程热物理]