基于能耗控制的建筑外百叶遮阳优化研究

Optimization of building external louver shading devices based on energy control

对透过建筑外百叶遮阳进入室内的太阳辐射得热进行了分析,并以建筑全年能耗为控制指标,提出了总辐射净得益量的概念,对建筑外百叶遮阳结构(百叶倾角和百叶数量)进行了优化,对比分析了优化模型与现用模型全年节能效果。结果表明,南向百叶遮阳的效果与百叶倾角有很大关系,而东西向则不明显;总辐射净得益量概念对于综合评价遮阳设施冬夏季的节能效果具有较好的指导作用。

Analyses the solar heat transfer into a room through building external louver shading devices.Taking building annual energy consumption as control index,suggests the concept of total annual solar energy gain to optimize the louver shading construction with the louver angle and louver number as variables.Compares annual energy saving effects between the optimization model and the existing model.The results show that the louver angle is a very important factor influencing the southern louver shading effects but not the eastern and western louver shading effects,and that the concept of total annual solar energy gain is good for annual energy saving assessment of building shading devices.