玻璃幕墙热工性能及节能研究

Research on Thermal Performance and Energy-saving of Glass Curtain Wall

阐述了玻璃幕墙得热转化为冷负荷的工作原理,介绍了目前应用最为广泛的3种玻璃幕墙的热工性能,采用传递函数法计算了某会展中心围护结构玻璃幕墙在11种组合下的冷负荷;以3 mm厚标准透明浮法玻璃为基准,计算了不同组合类型玻璃幕墙的能耗情况,比较了不同地理位置、遮蔽系数及传热系数、朝向、纬度时的冷负荷变化。结果表明:在不同地区,选取合适的玻璃、不同朝向上选取恰当的墙窗比、设置遮阳措施是减少玻璃幕墙能耗的主要方法。

The operation principle of heat gain transfered into cold load was represented,and the thermal performances of three most widely used glass curtain wall were introduced.Cold loads of an exhibition center glass curtain wall were calculated under eleven combinations using transfer function method.Taking 3 mm standard clear float glass as reference,energy consumptions of different combinations of glass curtains were calculated.Cold loads under different geographical locations,shading coefficients and heat transfer coefficients,orientations and latitudes were compared.Results show that in different regions,the main methods of reducing energy consumptions are selecting proper glass,selecting suitable wall-window ratio in different orientations,and setting shading device.