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  

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

作　　者：章重洋 李景广 陆津龙 高军[2] 陈玉卿 Zhang Chongyang;Li Jingguang;Lu Jinlong;Gao Jun;Chen Yuqing(Shanghai Research Institute of Building Sciences Group Co.,Ltd.,Shanghai,China;不详)

机构地区：[1]上海建科集团股份有限公司 [2]同济大学

出　　处：《暖通空调》2021年第2期20-26,122,共8页Heating Ventilating & Air Conditioning

基　　金：“十三五”国家重点研发计划项目(编号:2017YFC0702800)。

摘　　要：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)墙体表现出较好的保温性能和吸湿性能,在不同气候区都有良好的适应性;结构强度较大的钢筋混凝土(CON)墙体的保温性能和吸放湿性能相对较差,容易造成室内过多的湿负荷。霉菌生长风险计算结果显示:沈阳、北京和上海地区不同类型的外墙内表面霉菌生长风险较低;福州和昆明地区采用混凝土保温砂浆内外组合保温墙体时,内表面霉菌生长风险较高,在南方地区建筑外墙设计中应尽量避免采用该类型墙体。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.

关 键 词：外墙 建筑材料 热湿传递 含水量 霉菌生长 

分 类 号：TU111.4[建筑科学—建筑理论]