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相变材料(Phase Change Materials,PCM)是一种主要的潜热储能材料,通过在某一特定温度下物质的相态发生变化来实现能量的储存和释放,其中有固-液相变、液-气相变和固-固相变,可用于热能存储。根据住房和城乡建设部的数据,建筑能耗约占全社会总能耗的30%,其中使用最大的能耗是采暖和制冷。主要原因是我国现在每年新建建筑约20亿平方米,其中99%以上是高能耗建筑,如果对其进行改造,新建建筑保温节能造价按100-150元/平方米计算,每年新建筑节能造价约有2000亿-3000亿元;而既有的约430
Phase Change Materials (PCM) is a kind of main latent heat storage material, which can store and release energy by changing phase state of substance at a certain temperature. Among them, solid-liquid phase change, liquid - Gas phase change and solid-solid phase change, can be used for thermal energy storage. According to the Ministry of Housing and Urban-Rural Development data, building energy consumption accounts for about 30% of the total energy consumption of the whole society, of which the largest energy consumption is heating and cooling. The main reason is that China now has about 2 billion square meters of newly-built buildings each year, of which over 99% are high-energy-consuming buildings. If they are renovated, the cost of thermal insulation and energy saving of new buildings will be calculated at 100-150 yuan / There are 200 billion -300 billion yuan; while the existing about 430