[China Glass Network] Most people think that the purchase of aluminum alloy doors and windows top ten brands, pay attention to the quality of the obvious parts of doors and windows such as aluminum, glass, accessories, etc., and some professional performance requirements for doors and windows are not understood, more concerned It is the product quality, cost-effective and other factors. In the initial consumption ideology, the high-quality doors and windows of the top ten brands of aluminum alloy doors and windows are equal to high-performance doors and windows.
High quality doors and windows = high quality profiles + glass + accessories strips + processing technology + installation process +...
High-performance doors and windows = high-performance profiles × glass × accessories strips × processing technology × installation process ×...
Therefore: high-quality doors and windows, high-performance doors and windows now with the continuous improvement of the quality of life, people have clear requirements for the quality and performance of the building, building doors and windows energy-saving performance, safety performance, noise reduction, sun protection, comfort, durability More and more attention has been paid. In addition to paying attention to the quality of obvious parts such as aluminum, glass, and fittings, the construction of door and window products pays more attention to the realization of a comprehensive performance after the combination of these door and window components.
The real system door and window is a perfect organic combination of performance system, which needs to consider a series of important aspects such as water tightness, air tightness, wind pressure resistance, mechanical strength, heat insulation, sound insulation, anti-theft, sunshade, weather resistance and operation feel. Function, but also consider the comprehensive results of the performance of equipment, profiles, fittings, glass, adhesives, seals, all indispensable, and ultimately form high-performance system doors and windows.
At present, in the building materials market, the use of high-grade broken bridge profiles aluminum alloy doors and windows has gradually become the preferred product for many high-end building windows. However, experts also pointed out that the quality of aluminum alloy door and window products on the market is uneven, and must be carefully discerned when purchasing. Inferior aluminum alloy doors and windows, blindly selected aluminum profiles and specifications, processing rough and shoddy, sawing instead of milling, not installed according to requirements, poor sealing performance, switch is not free, not only leaking wind and rain and glass burst phenomenon, but also encountered When it comes to strong winds and external forces, it is easy to scrape or knock down the push-pull parts or the glass, causing damage to people. The aluminum profiles used for high-quality aluminum alloy doors and windows, thickness, strength and oxide film, should comply with the relevant national standards, the wall thickness should be above 1.2 mm, the tensile strength reaches 157 Newtons per square meter, and the yield strength should be At 108 Newtons per square millimeter, the oxide film thickness should be 10 microns. If the above standards are not met, it is inferior aluminum alloy doors and windows, which cannot be used.
Why do China need to introduce high-performance system doors and windows in Europe?
From the beginning of the modern building door and window industry in the early 1980s, it has experienced nearly 30 years of market baptism and evolution. The ordinary doors and windows with poor performance always occupy the dominant position in the Chinese market. The upgrading of Chinese door and window technology is slow, and the building doors and windows become The energy-consuming households of Chinese architecture will become energy-saving in the future!
As early as in the 1980s, Europe developed high-performance system doors and windows, which have far more energy-saving performance, safety performance and comfort than ordinary doors and windows.
In 2003, the European door and window standard required K value to be no more than 1.4. High-performance system doors and windows were more popular. At present, the market application amount has reached 70% of the total number of doors and windows, while the average K value of China's doors and windows is about 3.5 (insulation). The current high standard - Beijing door and window standard is K value 2.8, only the European 1984 door and window K value standard. According to calculations, according to China's existing urban construction area of ​​about 43 billion square meters, if the current European door and window standard K value is implemented, it can save 430 million tons of standard coal per year, which is about 20% of China's annual coal production. The number is quite amazing.
European system doors and windows entered the Chinese market in the late 1990s. Now the high-performance system door and window K value standard in Europe can reach 0.8, and its energy consumption is basically only 1/4 of the energy consumption of building doors and windows in China.
“Low Carbon†is the theme of the Copenhagen World Climate Conference at the end of 2009. At the meeting, countries launched their own energy conservation and emission reduction targets. China promised to reduce CO2 emissions per unit of GDP by 40%-45% in 2020 compared with 2005. As a binding indicator, it is included in the medium and long-term planning of national economic and social development. This means that China must adopt practical energy-saving measures in various economic fields of society to achieve the intended goals. At present, building energy consumption has accounted for 40% of the total energy consumption of the whole society in China; and door and window energy consumption accounts for 45% to 50% of building energy consumption, accounting for 15%-20% of total social energy consumption. It can be seen that the doors and windows are the main cause of building energy loss, and the upgrading of building energy-saving doors and windows will be the trend of the times.
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