一种扇形外遮阳装置在夏热冬冷地区的应用

The application of fan-shape external shading device in hot-summer and cold-winter area

基于常见水平遮阳形式，提出了一种可克服现有技术和产品弊端的扇形外遮阳装置，并在建立上海地区典型建筑理论模拟的基础上，确定了扇形外遮阳装置的适宜尺寸，搭建了可模拟带遮阳装置和不带遮阳装置接收太阳辐射强度的建筑遮阳效果实验台。通过实验测试，对比分析二者建筑外窗受外遮阳装置的影响差异，并验证扇形外遮阳装置的遮阳效果。结果显示，实测带遮阳装置的建筑外窗可有效遮挡9：00～16：00的太阳光辐射，降低室内温度；窗墙比为0．34时，进深为1．1m的扇形外遮阳可遮挡37．4％的太阳光辐射，使夏季冷负荷降低10％以上，达到建筑节能效果。

According to the common horizontal shading,this paper proposes a fan-shape external shading device which can overcome the disadvantages of the present techniques and products. And based on the theory simulation of the typical building in Shanghai,determine the appropriate size of the fan-shape external shading device,build the test bench of the building shading ef- fect which can simulate the solar radiation intensity with shading devices or not,comparative analyze the difference effected by the external shading device between the two kinds building windows,and verify the shading effect of the fan-shape external shading device. The results show that the building window with shading devices can effectively cover the solar radiation from 9：00 to 16：00, and reduce the inner temperature. When the window wall ratio is 0.34,the semicircular shading device with depth of 1.1 m can cover 37.4% solar radiation,and reduce more than 10% summer cooling load to saving the building energy.