岩棉条复合保温结构墙体传热系数研究  

Heat Transfer Coefficient of Rock Wool Strip CompositeInsulation Structure Wall

作　　者：张敏敏 刘元彬 王功振 王洪飞 ZHANG Minmin;LIU Yuanbin;WANG Gongzhen;WANG Hongfei(Shandong Quality Inspection and Testing Center of Construction Co.,Ltd.,Jinan 250031,China;Shandong Institute of Housing and Urban-Rural Development,Jinan 250000,China;Shandong Jianyan Testing and Inspection Technology Co.,Ltd.,Jinan 250101,China)

机构地区：[1]山东省建筑工程质量检验检测中心有限公司,济南250031 [2]山东省住房和城乡建设发展研究院,济南250000 [3]山东建研检测检验科技有限公司,济南250101

出　　处：《建筑节能（中英文）》2024年第9期38-41,49,共5页Building Energy Efficiency

摘　　要：建筑墙体作为围护结构构件的主要组成部分,其传热系数的直接影响了建筑保温系统的隔热性能评价。检测机构在实验室内依照相关建筑节能检测标准对建筑构件和建筑材料的保温性能进行检测。通过实验室测量和数值模拟计算相结合,研究了聚氨酯板复合岩棉条保温墙体结构和石墨聚苯板复合岩棉条保温墙体结构的传热系数,结果表明:随着岩棉条宽度的增加,非匀质复合保温墙体的传热系数的计算值和测量值之间误差波动增大。当外墙墙体的传热系数设计值为不大于0.30 W/(m^(2)·K)、复合保温板的厚度为70 mm、岩棉条的宽度为20 mm、岩棉条所占面积比为0.09时,所测得的复合墙体的传热系数为0.31 W/(m^(2)·K),与计算设计值误差3.3%。As the main component of the enclosure structure,the heat transfer coefficient of building walls directly affects the thermal insulation performance evaluation of the building insulation system.The testing agency tests the insulation performance of building components and materials in accordance with relevant building energy efficiency testing standards in the laboratory.Laboratory measurements are combined with numerical simulation calculations to study the heat transfer coefficients of polyurethane composite rock wool insulation wall structures and graphite benzene board composite rock wool insulation wall structures.The results show that as the width of the rock wool strip increases,the numerical fluctuation between the calculated and measured values of the heat transfer coefficient of the non-uniform composite insulation wall increases.When the design value of the heat transfer coefficient of the enclosure structure wall is not greater than 0.30 W/(m^(2)·K),the thickness of the composite insulation board is 70 mm,the width of the rock wool strip is 20 mm,and the area ratio of the rock wool strip is 0.09,the measured heat transfer coefficient of the composite wall is 0.31 W/(m^(2)·K),with an error of 3.3%from the calculated design value.

关 键 词：数值模拟计算 岩棉条复合保温墙体 传热系数 数值波动 

分 类 号：TU522.1[建筑科学—建筑技术科学]