Plastic windows and doors industry may be in building energy saving municipally field
Plastic doors and Windows of the coefficient of thermal conductivity is only 1/360 of the steel, aluminum, 1/250 of the good thermal insulating properties. At the same time, plastic doors and Windows are for chamber structure (some areas have been developed to five chamber and even six chamber structure), it consists of multiple independent space composition of the thermal insulation layer of air airtight, make full use of air heat insulation performance, and to make the whole materials to further reduce heat conductivity.
The experiment proved that plastic Windows of the double glass Windows heat transfer coefficient K value can reach 3.0 W/m2 k. the following, and can meet the hot summer and cold winter zone, hot summer and warm winter area and cold region, most of the energy saving construction requirements. And ordinary aluminium alloy window, even low-e hollow glass, its K value also can reach 3.5 ~ 3.0 W/m2 k.. Therefore, in order to meet the same K value requirements, plastic doors and Windows can choose more economic supporting glass, which can reduce the doors and Windows of the project cost.
According to expert introduction, plastic door window frame materials or door between material is through the melting of welding, window frame, casement all is a whole, namely material does not exist between gap, to eliminate the air through the horizontal and vertical material feeding joining together the possibility of the corner.
Plastic doors and Windows processing size and high machining accuracy, box fan lap the design is exquisite, at assembly, all the gaps are assembling a fluid sealant or seal tops. Glass to enchase in layering and casement into slots in the combination, and both sides are made of elastic rubber seal. Push-pull type in push-pull window frame rail buckle, fan and casing through the tops seal. Push and pull the door between, also through the two way over the tops of seal. Make the same score a window casement window frame and between is through the glue sealing. In addition, plastic doors and Windows installation, in the wall and aluminum awning window frame required between using the flexible support, with foam rubber to seal. At the same time, in the window frame, the part for are open air pressure balance holes and osculum, further improve the tightness performance into Windows.
The experiment proved that as long as strictly according to specification is made and installation, plastic door of push-pull window airtight performance can achieve energy related standards. Even if the performance is the general of push-pull window, the tightness performance can also meet the hot summer and warm winter area residential building energy saving design standards "and" hot summer and cold winter of residential buildings in energy saving design standard requirements.
The sun radiation heat income to the influence of building energy consumption is very big, the summer the sun radiation heat income increase refrigeration load, winter solar radiation heat heating load lower income. Therefore, different regions, different season, energy-saving building to the doors and Windows and its surrounding the shading of different product demand.
Plastic doors and Windows wide variety, called the window of supporting materials can choose freely. According to the different needs, can form a complete set of glass and various different shading products, which meet the energy saving building to the shading the requirements of the coefficient.
At present, the products are a lot of, have hacking sunvisors sunshade, hang curtain shade within and hollow glass built-in pages shade, etc. Plastic doors and Windows can and built-in pages shade hollow glass perfect form a complete set, color is harmonious. Supporting the built-in pages shade the hollow glass of plastic doors and Windows, they can adjust indoor natural lighting or completely to the effect.
In addition, in raw material production in energy consumption, and unit weight of polyvinyl chloride (PVC) is 1/5 of the energy consumption of steel, aluminum of 1/8. In the recovery reuse, recycle plastic profile of energy consumption also far lower than aluminum metal materials. Plastic material old material smashs, which can be mixed with new material to squeeze into complementary material, or make pipe and other extrusion products; And aluminum metal products after recovery, after high temperature melting, and then composition adjustment, and working procedure to bubble treatment to be made products. This shows, plastic doors and Windows in the field of energy-saving building advantages. If the new houses a year of 2 billion square meters, construction area in accordance with the Windows and doors area accounts for 1/7 of the rough calculation, the new doors and Windows every year about 300 million square meters.
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