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[China Glass Network] In recent years, many of the residential and public buildings around us have nearly closed large glass and floor-to-ceiling glass doors (balconies). This large-area exterior window improves the exterior view of the room while It is obvious that the solar radiation heat in the incoming room is increased, which increases the electricity consumption of the room air conditioner. In the north, the indoor and outdoor temperature difference in winter can be as high as 20-60 ° C, and the transparent transparent glass brings about a lot of heat while bringing good lighting. According to the survey, the energy consumption of doors and windows has accounted for 30%-50% of the total energy consumption of residents.
In fact, in building energy consumption, building glass doors and windows is a very weak and relatively easy to ignore. Then, how to adopt an effective and economical way to solve the insulation and energy saving of building glass doors and windows and improve safety performance?
Close the front, change the way the doors and windows are closed
The traditional way of opening doors and windows for Chinese people is a flat-open type, which has always dominated the history of China's 5,000-year history. At present, the common sliding doors and windows in the building are actually from Japan. This kind of opening method is simple and does not occupy indoor space, and has gradually dominated the doors and windows of buildings in China.
But is this push-pull opening method really good? I think that for a country like Japan, which is in a maritime climate with an active earthquake zone, its buildings generally choose materials with lower density. Many Japanese buildings do not design heating at all, so the sliding window does not involve energy loss. For Japan with better air quality, the push-pull type is convenient and practical. But for us in northern China, the choice of sliding windows is undoubtedly not suitable for energy saving and air tightness. It is better to choose a flat-opening window that is sealed by a rubber strip, so that the air convection inside and outside the room is blocked to a large extent, which is energy-saving and dust-proof.
Second, special treatment of the glass
People may notice that the glass used in China's building doors and windows is experiencing from ordinary (white glass) - deeper color heat absorbing glass (brown glass) - light green heat absorbing glass - light green insulating glass - coated glass - - A development process for low-emission coated glass (Low-E glass). All of these are to solve the problem of poor thermal insulation performance of ordinary glass. However, all of the above glasses have the fatal weakness of ordinary glass - fragile. The newer multi-functional glass film is a high-tech energy-saving product that can effectively control solar heat radiation and increase glass strength.
The glass film is made of a special polyester film as a substrate, and is coated with various high reflectivity metal or metal oxide coatings by magnetron sputtering in the middle of the polyester film. A functional glass film that is pressed and has high light transmission and high heat insulation. It can filter more than 80% of the infrared rays with heat, filter more than 90% of the ultraviolet rays, and prevent the glass from being damaged.
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