本文提出了将定形相变蓄能墙板安装在轻质保温墙体内侧,取代传统重质材料,改善围护结构夏季隔热性能的方法.以北京地区为例,比较了定形相变蓄能墙板与重质混凝土在改善轻质围护结构隔热性能方面的差异,并从相变温度和相变墙板厚度两个方面对定形相变蓄能墙板的使用效果进行了优化.研究表明定形相变蓄能墙板能有效改善轻质保温墙体的隔热性能,而对建筑自身承重增加很小.
Lightweight envelopes are more and more frequently used in modern buildings but they lack sufficient thermal inertia for summer insulation.To improve the summer insulation performance of the lightweight wall,shape-stabilized phase change material (SSPCM) panel is installed on the inner surface of the wall to lower the highest inner surface temperature.The effects of melting temperature and thickness of the PCM panel on the highest inner surface temperature are analyzed using an enthalpy model for west-facing wall in Beijing.The difference of thermal performance between SSPCM panel and the traditional concrete layer is compared.The results show that the SSPCM panel can lower the highest inner surface temperature of the lightweight wall greatly in summer with a modest increase in the weight.
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