Insiders teach you how to choose energy-saving doo

2022-07-22
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When buying a house, many people don't pay attention to the doors, windows and glass of residential buildings, but just feel "beautiful" from the appearance. Insiders pointed out that doors, windows and glass are not only the eyes of buildings

when buying a house, many people don't pay attention to the doors, windows and glass of residential buildings, but just feel "beautiful" from the appearance. Insiders pointed out that doors, windows and glass are not only the eyes of buildings, but also the key structure of building energy conservation

the larger the form, the less energy saving it is.

the large area of heat dissipation of the form is glass, not the window frame. Glass accounts for 70% to 90% of the area of different types of windows. The commonly used window types in buildings are generally sliding windows, casement windows and fixed windows

the structure of sliding window determines that it is not an ideal energy-saving window; Structurally speaking, casement windows have obvious advantages over sliding windows

the window frame of the fixed window is embedded in the wall, the glass is directly installed on the window frame, and the four sides of the contact between the glass and the window frame are sealed with sealant. Under normal circumstances, with good water tightness and air tightness, it is difficult for air to form convection through sealant, so convective heat loss is very small

high tech glass brings energy-saving revolution

in addition to windows, there is also the choice of glass. The light transmittance, direct solar transmittance, relative heat gain, heat transfer coefficient and other indicators of glass materials have a great impact on the indoor thermal environment and heating and air conditioning energy consumption of buildings. Therefore, when choosing decoration, we should understand the material, performance, use, etc. of some energy-saving glass

at present, several kinds of energy-saving glass materials are mainly coated glass, insulating glass and glass with thin-film thermal reflective materials. Generally, building doors and windows account for more than 40% of building energy consumption. For example, coated glass mainly includes solar thermal reflective glass, low radiation glass and multifunctional coated glass

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