摘要
运用二维稳态模型对夏热冬冷地区建筑中烧结页岩多孔砖自保温外墙的典型T形楼板热桥进行模拟分析。模拟结果表明,在烧结页岩多孔砖自保温体系中,热流从热桥处大量流失,不利于墙体保温。在热桥的室外侧面设置20 mm厚的无机保温砂浆层能减少热量从热桥处的流失,显著提高墙体内表面最低温度。不同保温层覆盖范围的模拟结果表明,随着保温层覆盖范围的增加,外墙平均传热系数不断降低,但降低的幅度越来越小,对于建筑能耗减少的影响也不明显,由此确定了作为夏热冬冷地区烧结页岩多孔砖自保温外墙和钢筋混凝土楼板构成的T形热桥处的无机保温砂浆层的覆盖范围的最优值。
In this paper, we use the two-dimensional steady-state model to analyze the typical T-floor thermal bridges in the sintered-shale-porous-brick walls in the hot summer and cold winter zone. The simulation results show that in the walls a lot of heat loss from the thermal bridge and it is bad for the insulation properties of the walls. When we set 20mm inorganic thermal insulation on the outdoor side of the thermal bridge, it can reduce the heat loss and increase the lowest temperature of the inside surface of the wall very much. As the simulation results show that with the increase of the coverage of the inorganic thermal insulation, the average heat transfer coefficient of the wall continue to decrease but it is not obvious when the coverage reach the optimal value.
出处
《建筑技术》
北大核心
2015年第8期736-739,共4页
Architecture Technology
基金
"十二"五科技支撑计划课题(2011BAJ03B11)
关键词
夏热冬冷地区
T形热桥
烧结页岩多孔砖
覆盖范围
最优值
hot summer and cold winter zone
T-floor thermal bridge
sintered shale porous bricks
coverage
optimal value
