夏热冬冷地区南向窗口水平遮阳板遮阳效果研究

Effect of Horizontal Sunshading Board for South Window in the Hot Summer and Cold Winter Area

根据丽水市地理位置、太阳辐射、气象资料等,计算了有无水平遮阳板2种情况下,夏至日丽水市南向铝合金双玻窗口接收到的太阳辐射能和辐射得热量。结果表明:丽水市南向铝合金双玻窗口在设置水平遮阳板后,遮阳板对太阳直射辐射的遮挡效果非常明显;对天空散射辐射也有一定程度的减弱;而对环境反射辐射没有明显的遮挡效果。总体来说水平遮阳板可以使丽水市南向窗口的太阳辐射得热量减少约15%左右。

According to the geographical location, sun radiation and meteorological data, the solar radiation and radiation heat are calculated, which received to the south of aluminum alloy double glass windows with or without the horizontal shading devices in summer solstice in Lishui City. The results show that, in Lishui City, the horizontal sunshading board is efficetive and obvious to the direct solar radiation, if the aluminum alloy double glass windows are installed with horizontal sunshade on the south; the horizontal sunshading board will also weaken the sky radiation and reflected radiation to some extent; the horizontal sunshading board has no obvious shielding effect on the environment. Overall, the horizontal sunshading board will reduce the solar heat gain about 15% for south windows in Lishui city.