How much do you know about the performance data of aluminum alloy swing doors? Odike Doors and Windows Business School has started classes. If you want to learn, don’t worry. Let the editor explain it to you one by one today.
The six main properties of aluminum alloy swing doors include:
1. Thermal insulation, that is, K value 2, water tightness 3, air tightness 4, lighting 5, wind pressure resistance 6, Sound insulation and noise reduction
1. How to calculate the K value of doors and windows?
Concept: The K value is also called the heat transfer coefficient, which used to be called the total heat transfer coefficient. The current national standards and specifications are uniformly named heat transfer coefficient. The heat transfer coefficient K value refers to the heat transferred through an area of 1 square meter in 1 hour under stable heat transfer conditions.
The air temperature difference on both sides of the building envelope is 1 degree (K, ℃). The unit is Watt/square meter·degree (W/㎡·K).
Heat transfer coefficient K (W/m2•K) of various door and window materials
Ordinary aluminum alloy profiles: 6.6 Insulated aluminum alloy profiles: 4.0 Wooden window frames: 1.8 5㎜ white Glass: 5.5 (5+12A+5)mm Medium blank glass: 2.8 (5+9A+5)mm Medium blank glass: 3.0 (5+6A+5)mm hollow glass: 3.2
Simple calculation method of K value of doors and windows (air tightness is not considered)
In general doors and windows, the proportion of profile area About 25%, the glass area accounts for about 75%, the simple calculation of the heat transfer coefficient K value of various types of doors and windows is about:
Ordinary aluminum alloy profile doors and windows: K=6.6×25%+2.8×75%=3.75 Insulated aluminum alloy doors and windows: K=4.0×25%+2.8×75%=3.10
2. What is the watertightness of aluminum alloy swing doors?
Watertight performance refers to the ability of closed exterior doors and windows to prevent rainwater from leaking under the simultaneous action of wind and rain.
3. What is the air tightness of aluminum alloy swing doors?
Air tightness refers to the ability of an exterior door to prevent air penetration when it is closed. This indicator is one of the three basic physical properties of doors and windows.
4. What is the lighting performance of aluminum alloy swing doors?
Concept: Daylighting refers to the brightness of light and sunlight. Lighting coefficient: refers to the ratio of the window opening area of a house to the ground area of the house.
In general building doors and windows, the profile area accounts for about 25% and the glass area accounts for about 75%.
5. What is the wind pressure resistance of aluminum alloy swing doors?
Concept: Wind pressure resistance refers to the ability of a closed outer door to avoid damage or dysfunction under wind pressure. This indicator is the most important of the three basic physical properties of doors and windows.
The wind pressure resistance design of doors and windows is implemented in accordance with the relevant requirements of GB 50009 \”Load Code for Building Structures\”.
6. What is the sound insulation and noise reduction performance of aluminum alloy swing doors?
The sound insulation performance of doors and windows refers to the ability of doors and windows to reduce the propagation of sound from the sound source to the listener. At present, there are no mandatory requirements for the sound insulation performance of doors and windows in national and industry standards.
Article source: Odik Business School
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