水平遮阳板角度在建筑节能与采光分析中的综合应用

The comprehensive application of horizontal external shading based on building energy saving analysis and building lighting analysis

建筑物外水平遮阳板的设置与建筑物外窗的朝向、不同时刻的太阳高度角与太阳方位角等因素相关。为了使水平遮阳板在不同时刻、不同朝向能充分发挥遮阳板的建筑节能效果,并能同时满足建筑采光要求,水平外遮阳应采用可调方式,并且能够根据时间与季节的变化进行调节。理论分析了影响水平遮阳效果的因素,并根据理论推理建立2个尺寸统一的水平外遮阳数学模型,分析不同角度的水平遮阳板在不同时间的遮阳效果。基于分析结果,结合水平外遮阳对建筑节能的影响,并综合考虑建筑的采光要求,得出南京地区建筑正南面外窗的水平外遮阳不同时刻的角度调控策略。

The building horizontal external shading setting associated with building windows orientations,solar altitude angles and solar azimuths in different times closely. In order to make sure the building energy saving effect can be optimized in different times for different window orientations and the building day lighting demands can be satisfied at the same time,the building hori- zontal external shading should be adjustable. The factors which itffluences the effect of horizontal external shading is being theoret- ical analyzed and two mathematical models with the uniform size is established based on theoretical reasoning. With the mathe- matical models,the effect of horizontal external shading with different angles in different time is analyzed. Based on these analysis results,the horizontal external shading angle control strategy is obtained for the south outer window in Nanjing city with compre- hensive analysis on building energy saving and building lighting.