The hottest plastic doors and windows are energy-s

Plastic doors and windows energy conservation and environmental protection Beijing took the lead in implementing the 75% energy conservation standard

in response to Beijing's taking the lead in implementing the 75% energy conservation design standard for new residential buildings during the 12th Five Year Plan period, the plastic doors and windows Committee of China Building Metal Structure Association and the Beijing Building hardware doors and windows curtain wall industry association jointly held a "plastic doors and windows heat preservation and energy conservation technology exchange meeting" in Beijing recently. At the meeting, through the technical exchanges of the participating experts and the exhibition of 18 plastic doors and windows with thermal insulation and decoration, whose heat transfer coefficient limit is less than 2.0w/M2 · K, people further learned about the various characteristics of plastic doors and windows

plastic doors and windows are recognized as the best energy-saving doors and windows in the world

plastic doors and windows, commonly known as plastic steel doors and windows, are made of polyvinyl chloride (PVC) resin with more than 10 additives and extruded into rods (Profiles) through extruders and molds; The bars are cut, installed into reinforced steel, welded into frames, and then equipped with sealing strips, hardware, accessories, glass and other assembled doors and windows

the biggest advantage of plastic doors and windows is energy saving. The plastic door and window Committee of China Building Metal Structure Association, Beijing Building hardware door and window curtain wall industry association and relevant plastic door and window production enterprises actively responded to the design standard of 75% energy saving of residential buildings in Beijing. This is not only the embodiment of the positive attitude of the plastic door and window industry, but also the commitment of the technical strength of the plastic door and window industry. Relevant information shows that the energy saving of plastic doors and windows is mainly reflected in three aspects. First, energy conservation in the production process. It is reported that the energy consumption of producing PVC profiles with the same weight is 1/4 of steel and 1/8 of aluminum The second is the energy conservation of recycling. For a long time, people only think that metal doors and windows can be recycled, but plastic doors and windows are more energy-saving and environmental friendly. Because plastic doors and windows don't need to go through melting, ingot casting, rolling and other processes like recycling metal doors and windows. They just need to crush waste materials, or add new materials to extrude profiles. The recycled materials can be used to make products such as floors and park benches. Third, the thermal insulation of plastic doors and windows is good and affordable. The heat transfer coefficient of metal is high, and the bridge needs to be broken to meet the limit value of the heat transfer coefficient of the external window required by the relevant standards. This process alone will greatly increase the cost of aluminum doors and windows. The unique material of plastic doors and windows makes it have excellent thermal insulation. When the heat transfer coefficient of external windows is limited to 2.0w/㎡ K, the price ratio of plastic windows to aluminum windows is 1:1.8 Based on the above advantages of plastic doors and windows, at present, the market share of plastic doors and windows in relevant countries (regions) is about 50% in China, 56% in Germany, 48% in the United States, 50% in Russia, 62% in South Korea and 45% in Europe

the value of heat transfer coefficient of building energy-saving external windows is the key to energy conservation.

on December 20, 2012, the Beijing Municipal Commission of housing and urban rural development, the Beijing Municipal Bureau of quality and technical supervision, the Beijing Municipal Planning Commission, and the Beijing Municipal Appearance Management Committee jointly proposed to Beijing the "request for instructions on further improving residential energy conservation standards". When talking about the comparison between Beijing residential energy-saving standards and domestic and foreign levels, it is emphasized that the limit of heat transfer coefficient of external windows in China's "design standard for energy efficiency of residential buildings in cold and severe cold areas" (jgj26-2010) is 2 8w/M2 · K, London is 2.0w/M2 · K, Berlin is 1.5w/M2 · K. The first key measure they put forward to improve the energy-saving indicators of new residential buildings in Beijing is to use high-performance energy-saving doors and windows to improve the heat transfer coefficient of residential envelope. This shows the importance of doors and windows in building energy conservation

Chen Qi, a member of the expert group of the plastic door and window Committee of China Building Metal Structure Association, pointed out that it is necessary to improve the energy-saving index of building external windows. First, building energy consumption accounts for nearly 1/3 of the total energy consumption in Beijing; Second, in building energy consumption, the thermal insulation performance of the peripheral protective structure plays a key role in reducing the energy consumption of heating in winter; Third, the use and installation of external windows with better thermal insulation performance is an important measure to improve the thermal insulation effect of external walls; Fourth, the external sunshade device is configured towards the outer window in the East and West, which will block the radiation and save a lot of air conditioning consumption. It can self assemble to form micelle energy

Chen Qi said that windows are a necessary part of the outer envelope, and also play an extremely important role in building energy conservation. Therefore, the window is no longer as simple as opening a hole, installing a window frame and inlaid glass as in the past, but it needs to strictly follow the design standards, product standards, processing procedures and installation procedures from the aspects of design, processing and installation, so as to obtain a finished door and window with functions and performance that meet the requirements. According to Chen Qi, at present, the domestic profile system attaches great importance to the development of door and window colorization. In addition to the conventional color coextrusion profiles, it has also developed color coated products. There are various imported color outdoor special films, metal texture and wood grain effects to choose from

Yaobing, President of China Building Metal Structure Association, said that Beijing took the lead in implementing barsum Jinan test, which is the earliest enterprise laboratory in China to produce experimental machines. After 10 years of research, 75% of the design standards can be achieved, which is worthy of promotion in the country. Yao Bing pointed out that standardizing the size standard of door and window openings and improving the K value standard of conductivity coefficient are the key work of door and window energy conservation. It is reported that the relevant departments of the Ministry of housing and urban rural development are formulating China's door and window opening size standards, which will contribute to the healthy and sustainable development of China's door and window industry

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