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以双层呼吸玻璃幕墙为对象,本文分析了不同玻璃组合方式对双层玻璃幕墙热工性能的影响。研究表明由于存在空气腔和中空玻璃,双层呼吸玻璃幕墙的传热系数大都满足《公共建筑节能设计就标准》。双层呼吸玻璃幕墙的遮阳系数受玻璃组合方式影响很大,室内侧玻璃的导热系数对双层呼吸幕墙的遮阳系数和太阳辐射得热中的对流成分比例有很大影响。即使采用中空Low-E玻璃等导热系数和遮阳系数都较低的玻璃,不恰当的玻璃组合方式仍可能会使双层呼吸玻璃幕墙遮阳系数不满足《公共建筑节能设计标准》规定性指标要求。
Taking double-skin respiration glass curtain wall as object, this paper analyzes the influence of different glass combinations on the thermal performance of double-glazed curtain wall. The research shows that due to the presence of air cavity and insulating glass, the heat transfer coefficient of the double-skin breathing glass curtain wall mostly satisfies the standard of energy-saving design of public buildings. The shading coefficient of the double-skin respiration glass curtain wall is greatly influenced by the combination of the glass. The thermal conductivity of the indoor glass has a great influence on the shading coefficient of the double-skin respiration curtain wall and the proportion of the convection component in the solar radiation. Even if glass with low thermal conductivity and low shading coefficient such as Hollow Low-E glass is used, improper combination of glass types may still cause the shading coefficient of the double-skin respiration glass curtain wall to fall short of the prescribed index of “Design Standard for Energy Efficiency of Public Buildings”.