贵州夏热冬冷地区自然采光对建筑能耗影响分析

以贵州夏热冬冷地区公共建筑为研究对象,分析建筑外窗在不同窗墙比、遮阳措施,以及玻璃可见光透射比的条件下,对自然采光及建筑年综合能耗的影响。提出自然采光节能率及自然采光相对节能率作为自然采光节能效果评价指标,并得到了自然采光对建筑能耗的影响关系。结果表明,自然采光节能率、自然采光相对节能率随窗墙比增大而增加。建议外窗设计时选用高透型玻璃,窗墙比范围为0.4~0.45。

Influence of Daylighting on Building Energy Consumption in Hot Summer and Cold Winter Zone of Guizhou

Taking a public building in hot summer and cold winter zone of Guizhou as the research object, the influence of daylighting on comprehensive energy consumption of public buildings is analzyed under different window-wall ratio, shading device and visible light transmittance of glass. The concept of the daylighting energy saving rate and the relative daylighting energy saving rate are proposed to evaluate the effect of daylighting energy efficiency. The results show that the daylighting energy saving rate, the relative daylighting energy saving rate increases with window-wall ratio increased. The high visible light transmittance glass is the better choice; and the range of window-wall ratio is 0.4~0.45 better for designing the public building.