夹层百叶遮阳双层皮幕墙光学性能计算模型  

Optical Properties Modeling for DSF with Blinds in Interior Cavity

作　　者：陈可臻 陈友明[2] 周娟 

机构地区：[1]华中科技大学建筑与城市规划学院,武汉430074 [2]湖南大学土木工程学院,长沙410082

出　　处：《建筑科学》2014年第6期101-107,共7页Building Science

基　　金：国家自然科学基金项目"夏热冬冷地区通风式双层皮幕墙系统适应性理论与实验研究"(51378185)

摘　　要：针对夏热冬冷地区夹层百叶遮阳双层皮玻璃幕墙(DSF),通过虚拟百叶单元模型将遮阳系统看作一层有均匀光学参数的半透明薄层,导出了遮阳百叶在不同太阳高度角下的直射辐射光学参数和散射辐射光学参数;基于界面辐射能量平衡原理,建立了夹层百叶遮阳双层皮玻璃幕墙逐时光学参数计算模型。以长沙为例计算了百叶遮阳双层皮玻璃幕墙对太阳直射辐射和太阳散射辐射的逐时反射率、吸收系数和透过系数。算例表明该DSF光学性能计算方法合理且计算结果可信,可用于DSF传热过程的模拟。As for double skin faade（DSF） with blinds in interior cavity in hot summer and cold winter zone,the blind system was treated as a thin semitransparent layer with uniform optical parameters by introducing virtual blind cell model.Optical parameters of the blind system were derived for beam radiation of different sun-height angles and diffuse radiation respectively.Based on the radiation balance on surface,a model for DSF with blinds in interior cavity was established to calculate its hourly dynamic optical properties.The hourly reflectivity,absorption coefficient and transmission coefficient of DSF with blinds in interior cavity for the beam and diffuse radiation in Changsha were calculated.The example results show that the presented calculation method for the DSF optical properties is reasonable and reliable,and that it is suitable for the heat transfer simulation of the DSF.

关 键 词：DSF 夹层百叶遮阳 界面辐射能平衡 光学性能 传热模拟 

分 类 号：TU113.4[建筑科学—建筑理论]