双层定型相变墙体结构在中国三种典型气候区的温度与能耗模拟研究

Simulation on Temperature and Energy Consumption of Three-Layer Shaped Phase-Change Wall Structures In Three Typical Climate Regions of China

将新型双层定型相变墙体即内外层相变材料分别在冬季与夏季发挥作用的材料,应用到所搭建立方体箱子的顶部、南墙与地板。实验组箱体采用双层定型相变材料,对照组箱体不采用相变材料。使用EnergyPlus软件研究箱体在呼和浩特、广州、上海的箱体内部温度变化与空调节能效果。结果表明:双层定型相变墙体在这三个城市能起到温度平抑的作用,呼和浩特的应用效果更明显,其次是上海,最后是广州。呼和浩特的箱体内部平均气温降低了2. 5℃;上海的箱体内部平均温度下降了1. 5℃;广州的箱体内部温度平均下降了1℃在全年冷热负荷方面,广州冷热负荷降低了10%,上海与呼和浩特的冷热负荷都得到了15%以上的降幅。

The new double-layer shaped phase change wall composed of the inner and outer phase change materials is utilized to the top,south wall and floor of the cube box.The double-layer shaped phase change material is used in the experimental box,but not used in the control group box.EnergyPlus software is applied to simulate the internal temperature changes of the cabinets in Hohhot,Guangzhou and Shanghai,as well as the energy saving effect of air conditioners.The results show that the double-layer shaped phase change wall can play a role in temperature stabilization in the above three cities,and the application effect of Hohhot is more obvious,followed by Shanghai and Guangzhou finally.The average temperature inside the cube of Hohhot decreased by 2.5 degrees Celsius;the average temperature inside the cube of Shanghai decreased by 1.5 degrees Celsius;the average temperature inside the cube of Guangzhou decreased by 1 degree Celsius.In addition,in terms of cooling and heating loads throughout the year,the cooling and heating loads in Guangzhou decreased by 10%,and the cooling and heating loads in Shanghai and Hohhot both decreased by more than 15%.