How much do you know about the performance data of doors and windows?


Release time:

2015-11-24

The six main properties of doors and windows 1, thermal insulation, that is, K value 2, wind pressure resistance 3, water tightness 4, air tightness 5, daylighting 6, sound insulation and noise reduction 1. What is the K value of doors and windows? 1. Concept: K value is also called heat transfer coefficient, which used to be called total heat transfer coefficient. The current national standard specification unified named heat transfer coefficient. The heat transfer coefficient K value refers to the heat transferred through an area of 1 square meter within 1 hour under the condition of stable heat transfer, with the air temperature difference on both sides of the enclosure being 1 degree (K,℃), and the unit is watts/square meter degree (W/㎡ • K). Heat transfer coefficient K(W/m2 • K) of various door and window materials: ordinary aluminum alloy profile: 6.6 heat insulation aluminum alloy profile: 4.0 wood window frame: 1.8 5 ㎜ white glass: 5.5(5 + 12A +5)mm hollow white glass: 2.8 (5 + 9A +5)㎜ hollow white glass: 3.0 (56 + 6A +5)mm hollow white glass: simple calculation method of K value of 3.2 doors and windows (without considering air tightness) In general doors and windows, the proportion of profile area is about 25%, and the proportion of glass area is about 75%. The simple calculation of K value of heat transfer coefficient of various doors and windows is about: ordinary aluminum alloy profile doors and windows: K = 6.6 × 25%+2.8 × 75%= 3.75 heat insulating aluminum profile doors and windows: K = 4.0 × 25%+2.8 × 75%= The calculation method of heat loss of 3.10 doors and windows is to calculate the total heat loss of the window based on the heat transfer coefficient K value of 3.5W/(m2 K), the outdoor temperature of heating is 0 ℃, and the indoor design temperature of heating is 20 ℃ (note: heat loss caused by air leakage is not included): 3.5 ×(1.2 × 1.5)× 20=126 W/h 2. What is the wind pressure resistance of doors and windows? Concept: Wind pressure resistance refers to the ability of the closed outer (door) window without damage and dysfunction under wind pressure. This indicator is a very important one of the three basic physical properties of doors and windows. The wind pressure resistance design of doors and windows shall be carried out in accordance with the relevant requirements of the GB50009 Load Code for Building Structures. 3. What is the water tightness of doors and windows? Water tightness refers to the ability of the closed outer (door) window to prevent rainwater leakage under the simultaneous action of wind and rain. This indicator is one of the three basic physical properties of doors and windows. 4. what is the air tightness of doors and windows? Air tightness refers to the ability of the outer (door) window to prevent air penetration in the closed state. This indicator is one of the three basic physical properties of doors and windows. 5. What is the lighting of doors and windows? Concept: Lighting refers to the brightness of light and sunshine. Lighting coefficient: refers to the ratio of the area of the window opening of the house to the floor 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%, 6. what is the sound insulation performance of doors and windows? The sound insulation performance of doors and windows refers to the ability of doors and windows to weaken the sound propagation from the sound source to the listener. At present, there is no mandatory requirement for sound insulation performance of doors and windows in national standards and line standards.

doors and windows
1, thermal insulation, namely, K value
2, wind pressure resistance
3, water tightness
4, air tightness
5, daylighting
6, sound insulation and noise reduction
1. what is the K value of doors and windows?
1. Concept: K value is also called heat transfer coefficient, which used to be called total heat transfer coefficient. The current national standard specification unified named heat transfer coefficient. The heat transfer coefficient K value refers to the heat transferred through an area of 1 square meter within 1 hour under the condition of stable heat transfer, with the air temperature difference on both sides of the enclosure being 1 degree (K,℃), and the unit is watts/square meter degree (W/㎡ • K).
Heat Transfer Coefficient K(W/m2 • K) of Various Door and Window Materials
Ordinary Aluminum Alloy Profile: 6.6
Thermal Insulation Aluminum Alloy Profile: 4.0
Wooden Window Frame: 1.8
5 ㎜ White Glass: 5.5 (5 + 12A +5)mm Hollow White Glass: 2.8
(5 + 9A +5)㎜ Hollow White Glass: 3.0
(5 + 6A +5)mm Hollow White Glass: simple calculation method of K value of 3.2
doors and windows (air tightness is not considered)
In general doors and windows, the profile area accounts for about 25% and the glass area accounts for about 75%. The simple calculation of K value of heat transfer coefficient of various doors and windows is about:
ordinary aluminum alloy doors and windows: K = 6.6 × 25%+2.8 × 75%= 3.75
heat-insulating aluminum alloy doors and windows: K = 4.0 × 25%+2.8 × 75%= 3.10
door and window heat loss calculation method
calculates the total heat loss of the window with the heat transfer coefficient K value of 3.5W/(m2 K), the outdoor heating temperature of 0 ℃, and the indoor heating design temperature of 20 ℃ (note: heat loss caused by air leakage is not included):
3.5 ×(1.2 × 1.5)× 20=126 W/h
2. What is wind pressure resistance of doors and windows?
Concept: Wind pressure resistance refers to the ability of the closed outer (door) window to avoid damage and dysfunction under wind pressure. This indicator is a very important one of the three basic physical properties of doors and windows. The wind pressure resistance design of doors and windows shall be carried out in accordance with the relevant requirements of GB 50009 Load Code for Building Structures.
3. What is the water tightness of doors and windows?
Water tightness refers to the ability of the closed outer (door) window to prevent rainwater from leaking under the simultaneous action of wind and rain. This indicator is one of the three basic physical properties of doors and windows.
4. What is the air tightness of doors and windows?
Air tightness refers to the ability of the outer (door) window to prevent air penetration when it is closed. This indicator is one of the three basic physical properties of doors and windows.
5. What is the daylighting of doors and windows?
Concept: Daylighting refers to the brightness of light and sunshine. Daylighting coefficient: refers to the ratio of the area of the window opening of the house to the floor 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%.
6. What is the sound insulation performance of doors and windows?
The sound insulation performance of doors and windows refers to the ability of doors and windows to weaken the sound propagation from the sound source to the listener.
At present, there is no mandatory requirement for sound insulation performance of doors and windows in the national standard and line standard.