建筑热激活系统热特性研究

Analysis of Characteristics of Thermally Activated Building System

为了揭示建筑热激活系统的热特性,以保温层厚度、混凝土厚度、室内得热量和遮阳情况为变量,以节能建筑围护结构的传热系数为基础,分析热激活建筑室内空气温度、围护结构内表面温度、系统的制冷量和围护结构得热量的变化规律。根据结果可知,在相同制冷工况下,热激活建筑围护结构内表面温度比空气系统条件下的内表面温度低,因此,热激活建筑相对空气系统具有提供更好的室内舒适度的潜力。根据分析热激活系统热特点可以得到,热激活系统可以与空气系统耦合使用,将热激活系统的冷量储存在建筑结构中,降低建筑内表面温度,提高室内的舒适度。

In order to reveal the characteristics of the thermally activated building system,the thickness of the insulation layer and concrete layer, heat gain and solar conditions are selected to reflect performance of the building. Air system and thermally activated building system are both modeled under the same circumstance based on the parameter of building envelope of energy-saving building in Beijing.According to the result,inner surface of the thermally activated building is simulated lower than the air system. By analyzing indoor air temperature,the indoor air temperature is different for the two systems.According to different characteristics of the system,the combined air system and thermally activated building system is a good choice for the reason of energy saving and indoor comfort.