由相变微胶囊与多孔调湿材料制备得到的复合相变调湿材料,兼具蓄热调热与湿缓冲双重效应,应用在建筑墙体构造中,能够同时调节室内空气温度、湿度,从而降低建筑能耗。本文首先基于热湿耦合传递理论,建立了能够计算包含相变过程的传热传湿模型——热湿耦合相变焓方法,并对其进行了检验验证;继而利用该方法,计算分析了复合相变调湿材料在两种典型气候条件下,建筑舒适性空调房间的应用效果。结果表明:材料能够有效减小室内温湿度波动;在干热、湿热气候区,可分别降低建筑能耗约28.8%、11.6%。
Phase change microcapsules and porosity moisture-conditioned materials were utilized to prepare composite phase change moisture-conditioned materials that were featured with thermal storage and regulation as well as moisture buffering. They have been applied in building wall configurations to regulate indoor air temperature and humidity so as to further reduce building energy consumption. In this paper,a heat and moisture transfer model that covered the calculation of phase change process was firstly constructed based on coupled heat and moisture transfer theory,which was also known as the coupled heat and moisture phase change enthalpy method. After verification,it was adopted to calculate and analyze application effects of the composite phase change moisturecontrolled materials in a comfortable air conditioning room under two circumstances of typical climatic conditions.The associated results indicated that these materials had capabilities to effectively reduce indoor temperature and humidity fluctuations. In dry heat and moist heat climatic regions, building energy consumptions could be separately brought down by 28. 8% and 11. 6% approximately.