國內市場所用的中空玻璃氣體間隔層厚度為6 mm、9 mm、12 mm等，主要是由所采用的鋁間隔條(詞條“隔條”由行業大百科提供)所決定的。氣體間隔層的厚薄與間隔層的熱阻有直接關系。在所用玻璃、密封膠、氣體種類相同的情況下，氣體間隔層越厚，間隔層熱阻越大。

　　The thickness of the insulating glass interlayer used in the domestic market is 6 mm, 9 mm and 12 mm, which is mainly determined by the aluminum spacer used in the industry, which is provided by the industry encyclopedia. The thickness of the gas interlayer is directly related to the thermal resistance of the interlayer. When the glass, sealant and gas are the same, the thicker the gas interlayer, the greater the thermal resistance of the interlayer.

　　但氣體間隔層的厚度達到一定程度后，增加氣體間隔層的厚度，熱阻不再增加或有減小的趨勢。這是因為當氣體間隔層厚度增大到一定程度后，氣體在玻璃之間溫差的作用下就會產生一定的對流(詞條“對流”由行業大百科提供)過程，從而減低了氣體層增厚的作用。

　　However, when the thickness of gas interlayer reaches a certain level, the thickness of gas interlayer will increase, and the thermal resistance will no longer increase or decrease. This is because when the thickness of the gas layer is increased to a certain extent, the gas will produce certain convection under the effect of temperature difference between the glass (the phrase "convection" is provided by the industry Encyclopedia), thus reducing the effect of the gas layer thickening.

　　中空玻璃具有突出的保溫隔熱性能，是提高門窗節能水平的重要材料，近些年已經在建筑上得到了極其廣泛的使用。但隨著節能標準的不斷提高，普通的中空玻璃已不能完全滿足節能設計的技術要求。

　　Hollow glass is an important material for improving the energy saving of doors and windows. It has been widely used in buildings in recent years. However, with the continuous improvement of energy saving standards, ordinary insulating glass can not fully meet the technical requirements of energy saving design.

　　中空玻璃都是垂直安裝使用的。但中空玻璃的應用范圍越來越廣泛，如果中空玻璃應用于溫室或采光屋頂，其安裝角度將會發生改變。當中空玻璃由垂直變為傾斜安裝時，增大的受光面積使之成為陽光集熱器，其隔熱性能也會因間隔腔內氣體對流的增加而下降30%以上。

　　The hollow glass is all vertically installed. But the application scope of insulating glass is more and more extensive. If insulating glass is applied to greenhouse or lighting roof, its installation angle will change. When the hollow glass is changed from vertical to slanting installation, the increased area of light receiving becomes a solar collector, and its insulation performance will decrease by more than 30% by the increase of convection in the interval cavity.

　　主要原因是當傾斜安裝使用的時侯，中空玻璃內部間隔層氣體的對流狀態會變得劇烈，這必將降低氣體對熱量的熱阻能力，終導致中空玻璃的隔熱能力變差。

　　The main reason is that when the inclined installation is used, the convection state of the air inside the insulating glass will become violent, which will reduce the thermal resistance of the gas to the heat, and eventually lead to the poor insulation ability of the insulating glass.

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