夏热冬暖地区建筑玻璃的遮阳和采光综合性能研究

Research on comprehensive shading and day lighting performance of building glass in hot-summer and warm-winter zone

依据夏热冬暖地区的建筑节能设计技术标准对建筑玻璃的遮阳和采光性能指标及其要求进行了分析。结合太阳能光谱能量分布,对玻璃遮阳系数与可见光透射比的相关性进行了理论分析。测试了1012个常用建筑玻璃样本(包括单片、中空和夹胶玻璃)的可见光透射比和遮阳系数,给出了各类玻璃可见光透射比和遮阳系数的范围并分析了相关性。提出采用透光遮阳比作为评价玻璃采光与遮阳综合性能的指标,并评价了各类玻璃的综合性能。针对不同类型建筑,基于综合性能最优的原则,给出了夏热冬暖地区建筑玻璃的选用原则。

Shading and day lighting performance index of building glass and their limits were analyzed according to building standard of hot-summer and warm-winter zone. Based on spectral distribution of solar radiation,the correlation of shading coefficient and visible transmittance of building glass was analyzed theoretically. 1012 glass samples （including single sheet,hollow glass and laminated glass） were measured on their shading coefficient and visible transmittance. Based on the results,numerical distribution range of typical building glass was shown and the correlation was analyzed. Ratio of visible transmitting and shading was proposed as the index of comprehensive performance. Using the index, typical building glass was evaluated. In the end,for different types building, choice principle was given based on optimal comprehensive performance.