轻质混凝土多孔砖自保温墙体热桥传热分析

Analysis on Thermal Bridge Heat Transfer Self-insulation Walls of Lightweight Concrete Porous Bricks

运用计算流体力学(CFD)软件对轻质混凝土多孔砖自保温墙体在框架结构体系中典型的外墙转角热桥传热性能进行了数值模拟计算,通过温度场结果分析,外墙转角热桥内表面在杭州冬季空调室外计算条件下会发生结露现象。为防止热桥内表面结露现象的发生,提出了外墙转角热桥部位的保温处理措施,这些措施值得在自保温墙体体系中借鉴。

The heat transfer performance of the external corner thermal bridge about the lightweight concrete porous brick self-insulation wall system in frame structure system is numerically simulated by using computational fluid dynamics(CFD)software.According to the results of temperature,the condensation will occur in the inner surface of the exterior wall corner thermal bridge under the outdoor condition of winter air conditioning in Hangzhou,and some insulation measures are put forward in order to prevent the occurrence of surface condensation.These measures can be used for reference in self-insulation wall system.