严寒地区居住建筑外墙传热系数确定及方法  

EFFECT OF MOLD TEMPERATURE ON EXTERIOR WALL OF RESIDENTIAL BUILDINGS IN SEVERE COLD AREA

作　　者：金松涛 付薇嘉 王丽颖[1] 胡议丹[1] 杨扬[2] Jin Songtao;Fu Weijia;Wang Liying;Hu Yidan;Yang Yang(School of Architecture and Design,Changchun Institute of Technology,Changchun 130021,China;School of Exploration and Mapping Engineering,Changchun Institute of Technology,Changchun 130021,China)

机构地区：[1]长春工程学院建筑与设计学院,长春130021 [2]长春工程学院勘察与测绘工程学院,长春130021

出　　处：《太阳能学报》2020年第2期355-362,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(41502145);吉林省科技发展计划(20180201030SF);吉林省科技发展计划(20180201027SF);吉林省教育厅十三五科学技术资助项目(JJKH20191263KJ)。

摘　　要：为研究适用于中国严寒地区气候条件的居住建筑外墙传热系数,通过ISO和DIN等国际标准对4种不同环境下的外墙内表面换热阻和发霉温度点等方面的理论进行全面介绍并分析。结合中国相关规范,运用外墙内表面温度计算公式对外墙内表面温度进行计算,并将其与不同室内相对湿度环境下的露点和发霉温度点进行对比分析,计算结果表明,针对墙体发霉问题,发霉温度点比露点温度更具有决定性作用。因此基于中国严寒地区气候条件,以不同室内相对湿度环境下的发霉温度点为基准,反向推导出适用于中国严寒地区气候条件的居住建筑外墙传热系数,最后提出满足室内相对湿度50%时的发霉温度点的传热系数为适用于中国严寒地区居住建筑的外墙传热系数。The theory of heat transfer resistance and mildew temperature on internal surface of external wall is introduced and analyzed comprehensively by international standards such as ISO and DIN to study the heat transfer coefficient of the external wall of residential buildings applicable to the climatic conditions in China’s severe cold regions. The temperature on internal surface of external wall is calculated by calculation formula combining with relevant norms in China,then it is compared with dew point and moldy temperature in different indoor relative humidity environments. The calculation results show that the moldy temperature is more decisive than the dew point temperature in term of mold phenomenon of the wall.Therefore,the heat transfer coefficient of the external wall of residential buildings suitable for the climatic conditions in severe cold regions of China is derived in the reverse direction based on the climatic conditions in severe cold regions of China. Finally,it is concluded that the external wall heat transfer coefficient of moldy temperature which meets the indoor relative humidity of 50% is suitable for residential buildings in severe cold regions of China.

关 键 词：传热系数 发霉温度 露点温度 内表面换热阻 相对湿度 表面温度 

分 类 号：TU201.5[建筑科学—建筑设计及理论]