膜式热湿调控原理与技术进展

发布时间：2018-04-10 18:37

本文选题：膜式热湿调控 + 膜材料　；参考：《科学通报》2015年18期

【摘要】：基于膜的热湿传递过程作为一种新型的温度、湿度处理技术,在建筑环境节能高效控制领域取得了积极进展.膜技术具有高效紧凑的特点,并且它可以选择性地只允许水蒸气通过膜表面,从而避免了液体除湿过程中溶液小液滴对新风的污染.近年来,该技术从热湿传递原理到实际应用都取得了新进展.本文介绍了目前应用的选择性透湿膜材料,分析了平板膜全热交换器、板翅式膜全热交换器、交叉三角形波纹板全热交换器和中空纤维膜组件等膜设备的传热传质过程.它们的传热传质分析,同时考虑了膜两侧热湿耦合的自然边界条件、流体在组件内流动的不均匀性、管束随机分布等实际运行因素对传热传质的影响.这些研究工作对膜组件的设计和膜系统的优化提供了理论基础.此外,还介绍了各种新型膜式除湿系统,当它们与热泵或太阳能等系统联合应用时,可以扩大系统的热湿负荷适应范围,增加系统的能量利用效率.今后,随着新型膜材料、内冷型膜组件、多级除湿系统以及瞬态动态参数模拟技术的出现,膜式热湿传递技术将会在实际工程中发挥更大作用.
[Abstract]:As a new kind of temperature and humidity processing technology, the heat and humidity transfer process based on membrane has made positive progress in the field of building environment energy saving and high efficiency control.Membrane technology has the characteristics of high efficiency and compactness, and it can selectively only allow water vapor to pass through the membrane surface, thus avoiding the pollution of fresh air caused by small droplets of solution in the process of liquid dehumidification.In recent years, new progress has been made in the technology from the principle of heat and moisture transfer to the practical application.In this paper, the selective permeable membrane materials used at present are introduced, and the heat and mass transfer processes of membrane equipment such as flat membrane total heat exchanger, plate-fin membrane total heat exchanger, cross triangle corrugated plate total heat exchanger and hollow fiber membrane module are analyzed.Their heat and mass transfer are analyzed, considering the natural boundary conditions of heat and moisture coupling on both sides of the film, the non-uniformity of fluid flow in the module, and the influence of practical operation factors such as the random distribution of tube bundles on heat and mass transfer.These studies provide a theoretical basis for the design of membrane components and the optimization of membrane systems.In addition, a variety of new membrane dehumidification systems are introduced. When they are combined with heat pump or solar energy systems, the heat and moisture load adaptation range of the system can be expanded and the energy utilization efficiency of the system can be increased.In the future, with the emergence of new membrane materials, internal-cooling membrane assemblies, multi-stage dehumidification systems and transient dynamic parameter simulation technology, membrane heat and moisture transfer technology will play a more important role in practical engineering.
【作者单位】：华南理工大学化学与化工学院传热与节能教育部重点实验室;
【基金】：国家杰出青年科学基金(51425601)资助
【分类号】：TU83

【参考文献】