我国不同气候区典型外墙的热湿迁移特性及霉菌生长风险评估

针对国家建筑标准设计图集09J908-3中常见建筑外墙的热湿迁移特性及霉菌生长风险展开研究,以5个代表城市(沈阳、北京、上海、福州和昆明)为例,采用WUFI Pro 6.2软件模拟了外墙的非稳态热湿传递过程.结果表明:墙体内部的热湿动态迁移过程受主体材料、保温材料和当地气象条件等多个因素的共同影响;加气混凝土(AAC)...

Heat and moisture transfer characteristics and mould growth risk assessment of typical exterior walls in different climate zones of China

Investigates the heat and moisture transfer characteristics and the risk of mould growth of common building envelopes provided by the national building standard design atlas 09J908-3.Taking five representative cities(Shenyang,Beijing,Shanghai.Fuzhou and Kunming)as examples,simulates the heat and moisture transfer process of the external walls by the WUFI Pro 6.2 software.The results show that the heat and moisture transfer process is influenced by multiple factors such as the substrate material,insulation material and local meteorological conditions.The aerated concrete walls exhibit better thermal insulation and moisture absorption performance with good adaptability in different climate zones.The reinforced concrete walls with high structural strength have relatively poor thermal insulation and moisture absorption and release performance,which can easily cause excessive indoor moisture load.The mould growth risk calculation results show that the risk of mould growth on the interior surface of different types of exterior walls in Shenyang,Beiing and Shanghai is relatively low.However,the risk of mould growth is higher when using light-weight cement mortar inside and outside combination insulation wall in Fuzhou and Kunming,so this kind of wall structure should be avoided as far as possible in the design of building exterior walls in the southern region.