摘要
利用AIRPAK计算流体力学软件,分析了复合板中加强肋的存在对其传热系数造成的影响,对以挤塑板和石墨挤塑板为保温层的外模板现浇混凝土保温与结构一体化系统整体热工性能进行分析,得出在连接件数量分别为6个/m^(2)、9个/m^(2)的情况下传热系数的变化情况及折合到保温材料上的综合修正系数。分析结果表明,对于复合保温板,在现阶段常用的保温材料厚度范围内,加强肋造成的传热系数相对误差在0.95%~2.72%范围内,折合到保温材料上的修正量在1.113~1.139范围内,基本可以忽略;由于连接锚固件没有采取有效的断热桥措施,使得传热量增加的比例较大;为应用方便,在以挤塑板(厚度60~90 mm)和石墨挤塑板(厚度50~80 mm)为保温材料时,建议在连接锚固件为6个/m^(2)和9个/m^(2)的情况下,保温材料综合修正系数分别取1.4和1.5。
The AIRPAK computational fluid dynamics software is used to analyze the influence of the presence of stiffening ribs in the composite plate on its heat transfer coefficient.The overall thermal performance of the external formwork cast-in-situ concrete insulation and structure integration system with extruded board and graphite extruded board as the insulation layer is analyzed,and it is concluded that when the number of connectors is 6 pieces/m^(2),9 pieces/m^(2),respectively.The heat transfer coefficient change and the comprehensive correction coefficient converted to the insulation material.The analysis results show that the relative error of the heat transfer coefficient caused by the reinforcing ribs is in the range of 0.95%to 2.72%,and the correction value converted to the thermal insulation material is in the range of 1.113 to 1.139.Basically,it can be ignored.Because the connecting anchors do not take effective measures to break the thermal bridge,the heat transfer increases in a large proportion.When extruded board(thickness 60~90 mm)and graphite extruded board(thickness 50~80 mm)are used as thermal insulation materials,the comprehensive correction coefficients of the thermal insulation materials with connection anchors of 6 pieces/m^(2) and 9 pieces/m^(2) are respectively taken as 1.4 and 1.5.
作者
李永
赵彦彦
李沫
毛宏智
路洪通
LI Yong;ZHAO Yan-yan;LI Mo;MAO Hong-zhi;LU Hong-tong(Hebei Province Center for Building Quality Inspection Co.,Ltd.,Shijiazhuang 050227,China;Hebei Building Research Engineering Technology Co.,Ltd.,Shijiazhuang 050227,China;Chongqing University,Chongqing 400045,China)
出处
《建筑节能（中英文）》
CAS
2022年第12期67-71,共5页
Building Energy Efficiency
关键词
保温与结构一体化
热工性能
传热系数
修正系数
integration of heat preservation and structure
thermal performance
heat transfer coefficient
correction coefficient
