建筑表面太阳投影面积的数值计算研究  

THE RESEARCH OF NUMERICAL CALCULATION OF SOLAR PROJECTED AREA ON BUILDING SURFACE

作　　者：丁力行[1] 刘仙萍[2] 季杰[3] 刘泉[3] 何立群[3] 

机构地区：[1]仲恺农业工程学院人工环境与控制研究所,广州510225 [2]湖南科技大学能源与安全工程学院,湘潭411201 [3]中国科学技术大学热科学和能源工程系,合肥230026

出　　处：《太阳能学报》2009年第12期1662-1665,共4页Acta Energiae Solaris Sinica

摘　　要：根据太阳运动模型和光学几何原理建立建筑外部遮阳设施动态遮阳效果分析的数学模型。利用该模型,建筑表面上的太阳投影面积可以由建筑地点、建筑几何形状确定。算例的计算结果表明,基于该数学模型的计算值与理论值相比差别很小。该模型对建筑表面太阳投影面积和太阳辐射得热的计算具有实际应用价值,并为动态遮阳效果的研究以及新型遮阳设备的研制提供理论依据。Based on solar motion model and optical geometry principle, a mathematical model to analysis the dynamic shading effect of external sun-shading device in building was presented. By taking the advantage of this model, areas of solar projections on building surfaces can be determined by the site and geometric shape of buildings. The results of calculation for special case indicated that the difference between calculation values and theoretical values is minor. The model not only provides practical value on the calculation for the area of solar projection on building surface and heat gain of solar radiation, but also provides theoretical basis for developing new sun-shading device and the researching of the device＇s dynamic shading effect.

关 键 词：有效光照面积 遮阳设施 数学模型 

分 类 号：TU519[建筑科学—建筑技术科学]