Energy-saving doors and windows are not mysterious
The principle of energy-saving doors and windows is actually not mysterious. Thermodynamics tells us that heat is exchanged in three ways, namely convection, conduction and radiation. Specific to the door and window: convection is the circulating flow of hot and cold airflow between the gap between the door and window, causing the convection of the gas to drive heat exchange, and the conduction is the heat transfer by the molecular movement of the frame fan material and the glass itself, and the heat passes through the door and window. Pass to the other side. Radiation is the direct transfer of heat by radiation, ie infrared.
To achieve energy saving, energy-saving doors and windows must effectively block and control the above three heat exchange methods. We can further analyze from the following three aspects:
Door and window type: sliding doors and windows are not energy-saving doors and windows, flat doors and windows, fixed windows are energy-saving doors and windows.
The structure of doors and windows plays a major role in energy saving. For example, if the sliding window slides back and forth on the sliding rail, there is a large space on the upper side, and there is a gap between the pulleys, and the sash upper and lower forms an obvious convection exchange.
The casement window, the sash and the window frame are sealed with a good rubber strip. After the sash is closed, the sealant strip is pressed tightly, and there is almost no gap, and it is difficult to form convection.
The fixed window is almost convective.
The heat loss of the swing doors and windows and the fixed window is mainly the heat conduction and radiation heat dissipation of the glass, sash and window frame profiles, which is much less than the heat loss of the convection.
Glass: The glass area in doors and windows generally accounts for more than 70%. The heat dissipation of glass is heat conduction and heat radiation. The amount of heat loss is related to the thickness of glass and the thermal conductivity of different glass. Insulating glass is currently recognized as the most effective energy-saving glass in the world.
Frame fan material: Aluminum alloy heat insulation broken bridge profile is the most popular energy-saving door and window material in the world. The doors and windows made of this aluminum material not only have outstanding performance in heat insulation performance, but also can be made into different colors and patterns inside and outside, and have other materials in terms of airtightness, watertightness, wind pressure resistance, pollution prevention, etc. The advantage of comparison.
Production and installation process: The process requirements for energy-saving windows and doors are much higher than ordinary doors and windows.
In short, energy-saving doors and windows are made of insulated bridge profiles and insulating glass, which are combined into a flat door and window system through advanced manufacturing and installation processes.
Pipe & Tubes
There are different type of tube and pipe,42mm,48,60mm and so on
Could be Painted,Galavanized,and HDG
Can be use for coupler scaffolding,cup lock scaffolding,Ringlock Scaffolding,Kwistage Scaffolding,Framce scaffolding and so on
Here comes our 5 types of Scaffolding systems:
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-ID15 Scaffolding Tower, this type Scaffolding is the most widely used in construction, such like bridge.
-Whole Aluminum Scaffolding
Pipe & Tubes,Aluminium Pipe Tubes,Pipe And Tubes,Mini Pipe Tubes
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