作　　者： ; ; ; ; ;

机构地区： 湘潭大学土木工程与力学学院

出　　处： 《建筑热能通风空调》 2010年第3期21-24,共4页

摘　　要： 根据传热学基本原理分析了建筑墙体的瞬态传热特性,测试了夏季通风墙体与非通风墙体的日温度变化,以及通风墙体房间在自然通风与非自然通风状态下的温度变化。实验结果显示：通风墙体对温度波幅的衰减系数较小,有利于减小室内空气温度的波动,提高室内环境的舒适性;通风墙体减小传热过程中内侧墙体的温度梯度,减少了通过墙体的热流量,有利于减少房间的空调冷负荷;自然通风对室内温度波的影响较大,对于夏热冬冷地区利用自然通风技术排除室内余热的非空调建筑,太阳直射辐射的墙体采用通风墙体能取得良好隔热效果。 The wall transient heat conductivity was analyzed based on heat conduct basic principles.The daily temperature of ventilated wall and unventilated wall were test in summer.The temperature variation when the room with ventilated wall is natural ventilated and mechanical ventilated were also monitored.The results show that the attenuation coefficient of temperature amplitude of the ventilated is quite small.It helps to improve indoor comfort for it minishes the indoor temperature fluctuate.The inner wall of the ventilated wall has a less temperature gradient thus it decrease the heat conduction which leads to a reduced air cooling load.The temperature wave in the room is obviously affected by natural ventilation.The natural ventilated building with no air condition in hot summer and cold winter areas the ventilated wall has favorable heat insulation.

关 键 词： 通风墙体 隔热 温度波衰减 稳态导热 瞬态导热

领　　域： [建筑科学]