The energy saving of doors and windows depends not

2022-07-22
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At present, the state has not issued specific standards and indicators for energy-saving doors and windows. But as an industry person, I want to talk about my understanding of energy-saving doors and windows. In fact, the word "energy-saving doors and windows" has been mentioned in the industry, but I think these views are somewhat one-sided

as for energy-saving doors and windows, the state has not yet issued specific standards and indicators. But as an industry person, I want to talk about my understanding of energy-saving doors and windows. In fact, the word "energy-saving doors and windows" has been mentioned in the industry, but I think these views are somewhat one-sided

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the general view is that energy-saving doors and windows actually use coated glass, Low-E glass, etc. as long as this form of glass is used, it can be called energy-saving doors and windows. I don't quite agree with this view. When it comes to doors and windows, in fact, it is a huge industrial chain, and it is also a synthesis of many marginal disciplines. Such as rubber industry, wood processing industry, non-metallic surface treatment and many other disciplines. Any small detail will affect the overall performance of doors and windows. For example, if the common rubber strip on the market is used, the rubber strip may age and deform in less than a year, resulting in air leakage and poor sealing effect. What about energy saving? I think energy-saving doors and windows should be considered from the following aspects:

first, door and window materials

now the materials of doors and windows include aluminum alloy, plastic steel, plastic, solid wood, and possibly some iron. There is a common sense that we all know that iron and aluminum have very high thermal conductivity, and a little heat will be emitted, so the house is always cold in winter. Plastic steel windows and plastic windows have become popular in recent years, but this kind of window is not strong enough, easy to become brittle, and its safety can be imagined. At present, wooden windows are the most energy-saving and environmental friendly, but they have their own defects, and they are not easy to burn, rot, crack, etc. But after special process and technical treatment, the wood is very stable. But at the same time, the price of wooden windows is not cheap

II. Glass

glass occupies most of the area of doors and windows, so it plays a very important role in energy-saving indicators. There are several types of glass on the market: first, ordinary glass, which has not been tempered; Second, ordinary tempered glass; Third, coated glass; Fourth, Low-E glass. Each kind of glass can be subdivided. So which kind of glass has the best energy-saving effect? It should be Low-E glass, which can filter out harmful light such as infrared ray, far infrared ray and ultraviolet ray, with remarkable energy-saving effect. In recent years, the state requires high-rise buildings to use insulating glass, that is, two layers of glass. But looking at the market, the insulating glass is specious. It may just be a simple two-layer combination, and the real heat insulation effect has not been achieved. In Germany, their buildings already require three layers of glass. To tell the truth, even if it is hollow glass, the hollow glass in China is far from that in Germany

III. energy saving of doors and windows is the overall energy saving

when it comes to energy saving of doors and windows, it is actually the energy saving of the whole window. Relying on glass alone cannot achieve the purpose of energy saving. The sealing performance of doors and windows is also an important parameter affecting energy conservation. If there is a problem with the sealing of doors and windows, the energy will also be easily lost. The sealing of doors and windows includes the following aspects. The first is the selection of sealing materials. Good sealant strips are flexible and elastic with strong weather resistance, even at minus 20°, It can also maintain its toughness. In addition to the sealant strip, the doors and windows also need to be treated by special processes to balance the indoor and outdoor pressure difference, and the sound of wailing and howling of doors and windows will disappear

in a word, the energy saving of doors and windows depends not only on the material, but also on the glass, but also on the technology of doors and windows

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