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Under the new standard, the research and development direction of aluminum alloy doors, windows and curtain walls

under the requirements of the new building energy-saving design standard, the aluminum alloy doors, windows and curtain walls industry should meet the difficulties, start from the design, technology, assembly, construction and other aspects, and focus on solving the problem of energy loss in view of the weak links and sensitive parts of building energy consumption, so as to improve the effective utilization of energy and reduce energy consumption, Achieve the effect of new material solutions that save energy without affecting cost and performance. There are mainly the following measures:

1. Under the condition that the shape coefficient of the building and the area ratio of the window to the wall are certain, the heat transfer coefficient K of the door, window and curtain wall can be reduced by reducing the design of the area ratio of the window frame

2. Adjust and innovate the window structure, opening form and window structure by inserting small iron sheets at the bottom of the main body. Gradually eliminate the traditional single sliding door and window type, and develop the flat opening door and window type. Improve the sealing performance, ventilation function and safety performance of doors and windows, and promote multi-functional heat cut-off, high-efficiency and energy-saving aluminum alloy doors and windows

3. For the thermal insulation aluminum alloy frame material profile, the heat transfer coefficient K of the frame is reduced by increasing the width of the thermal insulation strip and adopting the thermal insulation strip design with chamber structure; In addition, by using composite frame materials, such as aluminum clad wood, aluminum wood composite, aluminum plastic composite and other materials, the heat transfer coefficient K value of low frame in jc/t907 ⑵ 002 "concrete interface treatment agent" can also be reduced

4. For the glass in the transparent part of doors, windows and curtain walls, energy-efficient insulating glass configuration is adopted, such as three glass and two insulating glass, Low-E insulating glass with low radiation coating, vacuum glass, etc; In addition, the insulating glass interlayer is filled with inert gases (such as AR, Kr), and the insulating glass adopts the warm edge spacer technology, which can also effectively reduce the heat transfer coefficient K of the glass

5. For the sealing problem of doors and windows, the soft and hard coextrusion composite sealant strip with chamber structure and the long tail glass sealant strip that blocks the effect of heat convection and heat radiation are used, together with the tightly designed profile structure, to improve the sealing performance between the opening frames and leaves of doors and windows and the sealing performance of the glass inlaid parts, and reduce the heat loss caused by air infiltration

6. Combined with the external shading facilities of the building, through technical measures such as insulating glass built-in sunshade shutters, the requirements of the comprehensive sunshade coefficient SC value of building doors and windows are met, and the energy consumption required for air conditioning refrigeration in summer is reduced

7. Improve the installation technology of doors, windows and curtain walls, and improve the processing and installation specifications of SEBS foaming materials in all links. 3. By solving the anchoring and filling technology of doors, windows and curtain walls, improve the integrated energy-saving technology level of door, window and curtain wall structure and enclosure structure, and improve the overall energy-saving effect of the wall

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