论文部分内容阅读
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.
As a new type of temperature and humidity treatment technology, film-based heat and moisture transfer process has made positive progress in energy-saving and efficient control of building environment. Membrane technology is characterized by high efficiency and compactness, and it can selectively allow only water vapor to pass through the membrane Surface, so as to avoid the liquid dehumidification process of small droplets of fresh air pollution.In recent years, the technology from the heat and moisture transfer principle to the practical application of new progress have been made.In this paper, the current application of selective moisture-permeable membrane material, The heat and mass transfer processes of membrane heat exchangers such as flat plate membrane total heat exchangers, plate-fin heat exchangers, cross-triangular corrugated plate total heat exchangers and hollow fiber membrane modules were analyzed and their heat and mass transfer analysis Considering the natural boundary conditions of the heat and moisture coupling on both sides of the membrane, the inhomogeneity of the fluid flow in the module, the random distribution of the tube bundle and other factors affecting the heat and mass transfer, these researches have made great contributions to the design of the membrane module Optimization provides a theoretical basis.In addition, also introduced a variety of new membrane dehumidification systems, when used in conjunction with systems such as heat pumps or solar energy, you can expand the Department Of the heat and humidity load to adapt to increase the energy efficiency of the system in the future, with the new membrane materials, internal cooling membrane modules, multi-stage dehumidification system and transient dynamic simulation parameters of the emergence of technology, film heat and moisture transfer technology will be In the actual project to play a greater role.