[China Glass Network] Many people do not pay attention to the doors and windows of residential buildings when they buy a house. The glass just feels "beautiful" from the appearance. According to industry insiders, doors, windows and glass are not only the eyes of buildings, but also the key structure of building energy conservation.
First, the bigger the form, the less energy saving
The large area of ​​the form heat dissipation is glass, not the window frame. The glass accounts for 70% to 90% of the window area of ​​different types. The window type commonly used in buildings is generally a sliding window, a casement window and a fixed window.
The structure of the sliding window determines that it is not an ideal energy-saving window: structurally, the casement window has a distinct advantage over the sliding window.
The window frame of the fixed window is embedded in the wall, the glass is directly attached to the window frame, and the four sides of the glass and the window frame are sealed by the sealant. Under normal circumstances, the watertightness and airtightness are good, and the air is difficult to pass through the seal. The glue forms convection, so convective heat loss is minimal.
Second, high-tech glass brings energy-saving revolution
In addition to windows, glass selection, glass material transmittance, solar direct transmittance, relative heat and heat transfer coefficient, etc., have a great impact on the building's indoor thermal environment and heating and air conditioning energy consumption. When choosing the decoration, you should know the material, performance, and use of some energy-saving glass. Several energy-saving glass materials currently used are mainly coated glass, insulating glass and glass with film-type heat reflective material. General building doors and windows account for more than 40% of building energy consumption. For example, coated glass mainly includes solar heat reflecting glass, low-radiation glass and multi-functional coated glass.
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