Energy-saving doors and windows preferred plastic insulation aluminum alloy doors and windows

【China Aluminum Industry Network】 At present, there are three energy-saving doors and windows that are mainly used in the market. They are: plastic doors and windows, wear-in-insulation aluminum alloy doors and windows, and plastic insulated aluminum alloy doors and windows. In fact, these three kinds of doors and windows have some common advantages and some of their own characteristics.

Insulation performance: Generally determined by the K value of the thermal conductivity of the material itself. The thermal conductivity of plastic profiles (PVC) K (W/m2K) value is 0.16; thermal insulation strips in insulating strips made of heat-insulating strips of glass fiber reinforced PA66 K value of the material is 0.26-0.34; plastic injection type aluminum insulation The K value of the heat-insulating glue is 0.008-0.13. From the K value of thermal conductivity of thermal insulation materials, thermal insulation rubber is a better thermal insulation material.

The insulation performance of the windows is represented by the heat transfer coefficient U. The new current standard in Beijing specifies that the U value is 2.8 (W/m2K) (Beijing Municipal Residential Building Energy Efficiency Design Standard DBJ11-602-2006), and the new current standard of Shanghai provides U The value is 3.2 (W/m2K) (Shanghai Energy Efficiency Design Standard for Residential Buildings DG/TJ08-205-2008); the same door and window, and the glass system configuration is the same, the U value of plastic doors and windows is 2.2-2.9W/ m2K; The U-value of the strip-insulated aluminum alloy doors and windows is 2.2-2.6W/m2K, while the U-value of the plastic-insulated aluminum alloy doors and windows is smaller than that of the strip-insulated window (mainly embodied in K The value is smaller and the potting glue is solid inside the insulation tank, unlike the puncture type which is hollow between the two insulation bars, there will be air convection phenomenon). From this, it can be seen that the rubber-insulated aluminum alloy doors and windows are preferred for energy-saving doors and windows in terms of thermal insulation performance.