Although the country has not yet introduced specific standards and indicators. In fact, the word energy-saving doors and windows has been mentioned in the industry, but Jinpai Huating doors and windows editor thinks these views are somewhat one-sided.
The general view is that energy conservation aluminum alloy 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, it is actually a huge industrial chain, and it is also a combination of multiple marginal disciplines. For example, rubber industry, such as 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 you use the ordinary adhesive tape on the market, the adhesive tape may age and deform in less than a year, resulting in air leakage and poor sealing effect. How can you save energy? Energy-saving doors and windows should be considered from the following aspects:
1. Material of doors and windows
now the materials of doors and windows include aluminum alloy, plastic steel, plastic, solid wood, and maybe some iron ones. There is a common sense that everyone knows that the thermal conductivity of iron and aluminum is very high, and a little heat will be emitted, so the house is always very cold in winter. In recent years, plastic-steel windows and instrument frame have become popular, but the windows made of this material are insufficient rigidity large, which is easy to become crisp and safe. At present, wooden window is energy-saving and environmentally friendly, but wooden window has its own defects, which 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 window is not expensive.
2. Glass
glass occupies most of the area of doors and windows, so it plays a very important role in energy saving index. There are several types of glass on the market: first, ordinary glass, which has not been tempered yet; Second, ordinary tempered glass; Third, coated glass; Fourth, Low-E glass. Each kind of glass can be subdivided. So which kind of glass has good 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 adopt hollow glass, which is two layers of glass. However, looking at the insulating glass in the market is specious, it may just be a simple two-layer combination, and the real heat insulation effect has not been achieved. In Germany, their building requirements are already Triplex glass. To be honest, it is also hollow glass, and the hollow of China is far from that of Germany.
3. Energy saving of doors and windows is the overall energy saving
when it comes to the 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 saving. If there is a problem with the sealing of doors and windows, 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 sealing strips are flexible and elastic, and have strong weather resistance. Even at minus 20 degrees, they can also maintain their toughness. In addition to the sealing strip, doors and windows also need to be processed by special technology to balance the indoor and outdoor pressure difference, and the sound of the doors and windows crying and howling disappears.
In a word, the energy saving of doors and windows depends not only on the material, but also on the glass, and more on the craft of doors and windows.
