The thermal storage and heat transfer of pcm wallboards were studied , the ‘ decrement factor ’ and ‘ time lag , which are used to evaluate the material with constant thermo physical properties , can ’ t be used to evaluate the pcm wallboards , because the melting or freezing of pcm can charge or discharge high latent heat during a narrow temperature range , which causes different temperature distribution in the walls and different surface heat flow into the indoor environment 探討了墻體相變建筑構(gòu)件的蓄熱、傳熱特性。與常物性建筑構(gòu)件對室外溫度波動衰減(用衰減系數(shù)表示)和延遲(用延遲時間表示)的特性不同,相變建筑構(gòu)件在較窄的范圍內(nèi)有大量潛熱的吸收或釋放,從而顯著的影響其溫度分布和表面向室內(nèi)的傳熱速率。