【摘要】 本文提出了将定形相变蓄能石膏板安装在轻质保温墙体外侧取代传统绝热材料,以改善围护结构夏季隔热性能的方法。以南京地区为例,采用Matlab编程比较了定形相变蓄能石膏板和膨胀型聚苯乙烯板在改善轻质围护结构隔热性能方面的差异,并利用焓法模型从相变温度角度对相变蓄能石膏板的使用效果进行了分析。研究结果表明,定形相变蓄能墙体在夏季可以改善建筑物外墙的隔热性能,减少通过围护结构传入室内的热量,相变温度为28℃的蓄能墙体能最大程度缓解夏季室内的空调冷负荷,起到节能效果。更多还原

【Abstract】 In order to improve the summer insulation performance of lightweight wall,the shape-stabilized phase change material(SSPCM) panel is installed on the exterior surface of the wall,instead of traditional thermal insulation materials.In this paper,taking Nanjing as the research object,the thermal performance differences between SSPCM panel and EPS panel were compared based on the Matlab program.Furthermore,from the perspective of phase change temperature,the effects of SSPCM panel were analyzed using an enthalpy model.The results showed that the SSPCM panel could improve the summer insulation performance of lightweight wall and reduce the heat through the building envelope simultaneously.In additional,energy storage wallboard of melting temperature 28 ℃ could decrease the indoor cooling load greatly,and the energy-saving effects were obvious.更多还原