At present, building energy consumption accounts for about 40% of the total social energy consumption. Doors and windows are the opening lighting part of buildings and the weakest link of buildings, the energy lost through doors and windows accounts for 45%-50% of the building energy consumption and 20% of the total social energy consumption.
Energy loss factor analysis
1. Heat transfer coefficient of doors and windows
The heat transfer coefficient of doors and windows refers to the heat transfer through unit area per unit time. The greater the heat transfer coefficient, the greater the heat loss through doors and windows in winter. The heat transfer coefficient of doors and windows is also related to the materials and types of doors and windows.
2. Air tightness of doors and windows
Air tightness of doors and windows refers to the ability to prevent air penetration when doors and windows are closed. The level of air tightness of doors and windows has a great impact on heat loss. Outdoor wind changes will have a negative impact on room temperature. The higher the level of air tightness, the less heat loss, the influence on room temperature is more and more correct.
3. Window-wall ratio coefficient and orientation
Window Wall ratio refers to the area of the outer window and the outer wall the ratio of the area. Generally, the heat transfer resistance of doors and windows is much smaller than that of walls. Therefore, the cold and heat consumption of buildings increases with the increase of the area ratio of windows and walls.
As a measure of building energy conservation, it is required to determine the appropriate window-wall ratio under the condition of lighting and ventilation. Generally speaking, the solar radiation intensity and sunshine rate in different directions are different, and the solar radiation heat obtained by Windows is also different. The main way to save energy for doors and windows is thermal insulation.
Door and window selection | Super view energy-saving doors and windows
Performance 1: reduce heat conduction
Polar aluminum-coated plastic mute window concentrates the advantages of three materials of aluminum-plastic steel, effectively combines the energy-saving thermal insulation of plastic, the weather-resistant aging of aluminum and the structural safety of steel; At the same time, it adopts hollow glass structure, the heat-conduction coefficient of its glass is also much lower than the heat-conduction coefficient of other profiles of doors and windows, effectively reducing the heat conduction through doors and windows.
Performance 2: prevent condensation
The temperature of the inner surface of the aluminum-coated mute window with heat insulation strip is close to the indoor temperature, which can reduce the possibility that indoor moisture condenses on the surface of the profile due to saturation.
Performance 3: energy saving and environmental protection
In winter, the indoor temperature is higher than the outdoor temperature. Aluminum-coated plastic profiles have good air tightness, which can prevent heat from losing outward. In summer, aluminum-coated plastic profiles can block outdoor hot air from flowing into the room, thus avoiding the increase of temperature and playing the role of adjusting room temperature. At the same time, the loss of energy is greatly reduced and the effect of energy saving is achieved.
Casement the hollow glass structure is adopted to make the windows really show sound insulation, heat insulation, heat preservation and excellent functions, greatly saving heating and cooling costs, and the energy saving effect is remarkable, achieving the effect of "warm in winter and cool in summer.
Performance 4: Noise reduction
Adopting hollow glass structures with different thickness and multi-cavity structures of aluminum-coated plastic profiles can effectively reduce the resonance effect of sound waves, prevent the transmission of sound, and give people a quiet and comfortable space.
Performance 5: colorful colors
Outdoor powder spraying and fluorocarbon spraying can produce appearance effects of different colors after surface treatment. Indoor coating can make aluminum-coated plastic doors and windows produce two-color windows of different colors indoors and outdoors.
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Edit: doors and windows online-Yanzi
