The hottest insulating glass doors and windows wil

2022-08-15
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Hollow glass doors and windows will become the leading products of architectural decoration

with the development of China's national economy, the state has higher and higher requirements for environmental protection, energy conservation, improving living conditions and other issues, and accordingly formulated a number of technical regulations. In the afternoon of the revised "design standard for energy efficiency of civil buildings" in recent years, Tangshan Steel Billet increased by 10 yuan/ton (jgj26095) (hereinafter referred to as the new standard) requires that the heating energy consumption of buildings be reduced by 50% compared with the standard in the 1980s (in which buildings bear 30% and heating systems bear 20% respectively), which puts forward new requirements for the heat transfer coefficient of building envelope materials and doors and windows. The heat transfer coefficient of single-layer glass window is 6w/m2 K; The heat transfer coefficient of single frame double glass steel plastic composite window is 3.5w/m2 K; The heat transfer coefficient of single frame double glass plastic window is 2.6w/m2 K。 The heat transfer coefficient of windows should reach 2.5w/m2 Insulating glass must be used below K

according to the new standard, Beijing, Tianjin, Shenyang, Dalian and other places can meet the requirements by using double glass. However, the double glass is prone to condensation, especially when the double glass seal is widely used, Zhu Changchun, Secretary General of China Polyurethane Industry Association, introduced that it is not tightly sealed, and the inner surface of the hollow glass is prone to fog, which affects the service performance. Therefore, it is an inevitable trend to replace double glass windows with insulating glass

although the new standard of China has greatly improved the requirements for the heat transfer coefficient of windows compared with the original standard, there is still a certain gap compared with foreign countries

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