薄膜的传湿性能研究  

RESEARCHES OF MOISTURE TRANSFER PERFORMANCE IN THIN MEMBRANE

作　　者：冯冬晖[1] 张立志[2] 宋耀祖[1] 闵敬春[1] 

机构地区：[1]清华大学航天航空学院 传热与能源利用北京市重点实验室,北京100084 [2]华南理工大学化工与能源学院 教育部传热与节能重点实验室,广东广州510640

出　　处：《工程热物理学报》2009年第3期501-504,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50576040;No.50676034)

摘　　要：膜式全热交换器是新风节能型空调系统的重要部件.本文针对膜式全热交换器中的薄膜传湿性能进行了实验研究,在此基础上建立了二维对流扩散传质物理数学模型,并进行了数值模拟与分析,获得了温度、进口湿度、进口体积流量及工作室内下腔空气层高度对出口湿度和湿交换率的影响规律。研究表明,薄膜可以拥有很高的传湿能力,它在全热交换器中的传湿性能优于纸质材料,有望在新风节能空调以及其他相关领域上获得广泛应用。The membrane-based heat and mass exchanger （MHME） is an important part of new type air-conditionings which provide fresh air and also economize on energy. In this paper, the experiment of moisture transfer property in membrane focused on the MHME is done and the two-dimensional physical mathematics model of convection and diffusion mass transfer property is set up. The simu- lations are carried out to investigate the influencing rule of temperature, inlet humidity. inlet volume flux and the height of the lower chamber on outlet humidity and moisture exchange effectiveness. The results show that thin membrane has higher performance than paper on moisture transfer. It can be expected that membrane will be popular in MHME and other fields.

关 键 词：薄膜 传湿 传湿阻力 实验测量 数值计算 

分 类 号：TK124[动力工程及工程热物理—工程热物理]