基于建筑水平外遮阳采光口的优化设计研究

Optimization Design of Natural Daylight Based on External Horizontal Shading Devices

基于固定水平外遮阳,通过分析、整合建筑遮阳和采光的影响因素,提出了耦合遮阳和采光的设计方法:在不改变建筑的外遮阳系数的前提下,调整采光口的形状以优化室内自然采光,并利用ECOTECT软件进一步分析了房间进深和水平遮阳出挑长度不同时,采光口形状对室内平均采光系数的影响,结果表明在遮阳板出挑长度、采光口面积、窗台高相同的情况下,采用横窗时室内的平均采光系数较高,并将该结论应用于教学建筑方案设计中,优化了室内的自然采光使之满足采光标准的要求。

An optimized scheme of daylight indoor is proposed by analyzing the influence factors to daylight and energy efficiency, based on the fixed external horizontal shading devices. The indoor daylight is optimized with the adjusted daylight opening shape and without the changed external shading coefficient. The effect of window shapes on the average daylight factor is analyzed by the ECOTECT software with different depth of room and length of horizontal shading devices. The results show that the average daylight factor can be optimized with the transverse window when the length of the shading devices, the area of the opening and sill are fixed value. The result is applied to the teaching of scheme design to optimize the natural lighting of the room and met the standard.