复合调热调湿材料的理论、制备及性能研究  

A Study of the Theory, Preparation and Performance of Composite Heat-humidity Controlling Materials

作　　者：陈智[1] 秦孟昊[1] CHEN Zhi;QIN Menghao(School of Architecture and Urban Planning, Nanjing University)

机构地区：[1]南京大学建筑与城市规划学院

出　　处：《建筑实践》2019年第2期10-11,共2页Architectural Practice

摘　　要：随着社会的发展,人类社会对能源的需求越来越大。能源的消耗,带来了一系列的环境问题。建筑在全生命周期过程中,其消耗的能源约占人类能源消耗的50%,而其中暖通空调系统消耗的能源可以占建筑物消耗能源总量的50%以上。暖通空调系统负荷包括潜热负荷和显热负荷,潜热负荷主要源于对室内环境相对湿度的控制,而同时相对湿度对人体舒适性、健康和工作效率也有很重要的影响。本论文则是在这一背景下,试图通过被动节能技术调控室内的温湿度,从而达到节能的目的。本论文主要包括3个部分,首先是对多孔材料的吸放湿现象进行理论分析;其次是制备能同时调热调湿的材料,并测试其性能;最后通过模拟软件对材料的节能效果进行模拟。本文首先分析了化学吸附与物理吸附的吸附过程,然后从毛细凝聚理论出发,分析了物理吸附过程中湿滞现象的成因,并对湿滞现象与孔结构的关系进行了分析,分别给出了单曲面孔结构和多曲面孔结构中湿滞现象的定性解释,并对均匀圆柱形孔内湿滞线的吸湿线与放湿线斜率进行了计算。在对湿滞现象分析的基础±,本文提出了定点调湿材料这一概念,并对理想定点调湿材料的特性进行了分析,利用AAO模板,对上述相关理论进行了验证。同时结合BET多分子层吸附理论,从理论出发,给出了湿滞环内循环的吸放湿路径描述公式。文章分析了材料的传湿系数和湿容在非常数情况下的湿缓冲情况,在考虑表面换湿系数的情况下,推导出包含换湿系数时的湿缓冲值,并给出具体的计算形式。接着,考虑外界相对湿度波动是近似简谐波动,并在此条件下,给出了材料在平衡之后的吸放湿量,并给出了相关的修正系数方程。测试了VCPCM(火山石粉与微胶囊复合材料)在不同相对湿度状况下的湿缓冲值,并利用软件模拟计算的方法,分析比较了�With the rapid developme nt of society, the dema nd for energy is increasing. Energy consumption has brought about a series of environmental problems. In the whole life cycle of constructions, the energy consumed by the building is about 50% of the total energy con sumpti on, and the en ergy con sumption of HVAC system can account for more than 50% of the total energy consumption of buildi ngs. The load of the HVAC system has late nt heat load and sensible heat load, and the latent heat load is mainly to control the relative humidity of the in door enviro nment. This work attempts to achieve the purpose of energy conservation by using energy saving technology to adjust the relative humidity in the room. This work mainly includes three parts. The first is the theoretical analysis on the moisture adsorption/release phenomenon of porous material, and the moisture buffer value is analyzed. Then, the phase change humidity control materials are prepared, and the properties of the composites are tested. Finally, the performance of the materials is simulated by EnergyPlus. The adsorption process of physical adsorption and chemical adsorption is analyzed. Based on the theory of capillary condensation, the hysteresis process of the physical adsorption is analyzed, and the relationship between the hysteresis phenomenon and pore structure is analyzed respectively. A qualitative explanation about the hysteresis phenomenon of single face structure and multi curved face structure is given. The slope of the hysteresis curve caused by uniform cylindrical structure is calculated. Based on the analysis of hysteresis phenomenon, the concept of precise humidity control material is put forward, and the characteristics of the ideal fixed point humidity control material are analyzed. Using the AAO template, the theory is verified. At the same time, based on the theory of BET multi molecular layer adsorption, the formula of the moisture absorption and desorption path in the hysteresis loop is given. The moisture transfer process is analy

关 键 词：多孔材料 相对湿度 湿滞回线 湿缓冲值 相变 节能 

分 类 号：TU59[建筑科学—建筑技术科学]