[China Aluminum Network] The doors and windows of buildings are part of the external structure of a building and are the most sensitive parts of a building's heat exchange. The energy consumption per unit area is 5-6 times that of a wall. The heat loss of doors and windows accounts for the entire building. More than 40% of the material. There are three ways for the heat loss of doors and windows outside the building: heat conduction loss through the aluminum alloy profile at the front; second, radiation heat loss through the glass; and third, air convection heat loss through the door and window gap. Therefore, the production of insulation and energy-saving aluminum alloy doors and windows must also be considered from these three aspects.
(1) Aluminum alloy material Aluminum alloy material is a good conductor of heat, and the thermal conductivity is mostly high. To make heat-insulating glass, it is necessary to select the section that has the heat-insulating bridge treatment, that is, to cut off the heat conduction path of the section to achieve the purpose of heat insulation.
(2) Glass insulating doors and windows need to use hollow glass, because the hollow space between the hollow glass is filled with dry, static air, so that the thermal conductivity is greatly reduced, so hollow glass has excellent insulation, sound insulation and resistance Frosting, condensation performance, commonly used glass hollow glass thickness 5 ~ 6mm, common cavity thickness 9mm, 12mm.
(3) Sealant Sealant used for heat insulating doors and windows shall be weatherproof. Sealant rubber shall be made of neoprene rubber with excellent anti-ozone and ultraviolet aging resistance. seal.
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