水平与垂直遮阳效果的解析研究

Effect Analysis of the Horizontal and Vertical Shading Devices

采用透光计算的方法,以深圳地区为研究对象,从直射、散射和总辐射的角度进行了水平和垂直遮阳系数的计算,分析了不同朝向水平、垂直遮阳装置的全年遮阳特性,得到了冬、夏季遮阳系数计算公式的回归系数,并与采用能耗计算方法得出的结果进行比较分析。结果表明,直射辐射遮阳系数和总辐射遮阳系数由于全年不同季节直射、散射所占比例不同而产生不同的变化趋势,利用透光计算方法和能耗计算方法得到的遮阳系数有较好的一致性,并发现垂直遮阳不宜作为东西向遮阳方式。

The shading coefficients of the vertical and horizontal shading devices in Shenzhen based on the direct solar radiation, diffused radiation and the global radiation were calculated, and the annual performance of the horizontal and vertical shading devices in different building orientations was analyzed. The regression coefficients of the shading calculation formula for the winter and summer were got, and were compared with the results of the energy consumption calculation. The results show that direct radiation shading coefficient and the global radiation shading coefficient have the different change trends because of the different proportion between the direct radiation and the diffuses radiation, and the shading coefficients based on the light transmission calculation and the energy consumption simulation have the good consistency, and get the conclusion that vertical shading device is not suitable for west and east shading device.