增加建筑物的墙厚有利于保持室内的舒适温度,减少空调能耗。使用相变材料作地板、天花板或墙壁也能达到同样的效果。相变材料在适当温度会发生相变,如熔化。只要这种物质的数量足以保持不完全熔化或凝固,则建筑物内部就有可能稳定在相变温度;这与一杯冰水在冰完全熔化前保持在0℃的情况相似。在冬季,相变材料白天通过熔化蓄热,夜晚通过凝固放热。研究最多的蓄热相变材料是芒硝(水合结晶硫酸钠)。它的价格低,但有以下几个缺点:虽然它在22.8℃熔化,但在凝固前有过 Increase the wall thickness of the building is conducive to maintaining a comfortable indoor temperature, reducing air conditioning energy consumption. Using phase change materials for floors, ceilings or walls can achieve the same effect. Phase change material phase transition occurs at the appropriate temperature, such as melting. As long as the amount of this material is sufficient to keep it incompletely melted or solidified, it is likely that the interior of the building is stable to the phase transition temperature; this is similar to a cup of ice water maintained at 0 ° C until the ice is completely melted. In winter, phase change materials heat up by melting during the daytime and exotherm through solidification at night. The most studied phase change thermal storage material is thenardite (hydrated crystalline sodium sulfate). Its low price has the following disadvantages: Although it melts at 22.8 ° C, it has been passed before solidification