Aluminum-clad wood doors and windows integrate environmental protection, energy saving, decoration, and practicality. Affordable. Aluminum on the outside and wood on the inside achieve a double decorative effect. The interior is warm and elegant solid wood doors and windows, and the exterior is intuitively noble and luxurious aluminum alloy effect. A variety of colors are available for indoor and outdoor use to suit different decoration styles and architectural styles. In addition to these excellent functions, aluminum-clad wood doors and windows have very good energy-saving effects.
Why are aluminum-clad wood doors and windows energy-saving?
The function of the new aluminum-clad wood doors and windows, energy-saving insulation windows, is to block outdoor heat energy in summer to save the electricity consumed by air conditioning, which also saves electricity bills; in winter, it keeps indoor heat energy indoors to save energy consumed by heating and cost. This new type of door and window that not only saves energy but also has thermal insulation is highly comfortable and can also bring great benefits to consumers.
There is a professional term in the door and window industry: heat transfer coefficient K value (also called conduction coefficient or thermal insulation coefficient, called U value in European and American countries)
Heat transfer coefficient: refers to the heat transfer through an area of 1 square meter within 1 hour when the temperature difference on both sides of the building envelope is 1 degree (K, ℃) under stable heat transfer conditions. The unit is: W/㎡.K) The larger the K value, the more heat is transferred and the more energy is lost. On the contrary, the less heat is transferred and the less energy is lost.
It is a professional technical parameter that measures the thermal insulation performance of doors and windows. Compared with aluminum alloy windows and plastic steel windows (PVC windows), aluminum-clad wood doors and windows have outstanding advantages in thermal insulation performance. The heat transfer coefficient of the wood frame in aluminum-clad wood doors and windows is only 1.3, which is far lower than the 3.0 of aluminum alloy windows and the 2.2 of plastic steel windows. Therefore, aluminum-clad wood doors are truly energy-saving doors and windows.
What are the implementation standards for energy-saving doors and windows in various countries?
Let’s take a look at a set of data first: According to the current EU standards, the K value of doors and windows is generally between 1.1 and 1.3. In recent years, the K value standard of German doors and windows has been reduced from 1.3 to 1.1, Switzerland has increased it from 1.3 to 0.7, and France plans to Achieve zero energy consumption in buildings by 2020. On the other hand, the current status of energy-saving doors and windows in China is worrying. We are nearly 30 years behind developed countries. For example, the K value implemented in Shanghai is 2.8, which is equivalent to Germany's 1984 standard. Doors and windows have become a weak link in the energy conservation of buildings in my country. The energy consumption of doors and windows accounts for 45%-50% of building energy consumption and 20% of total social energy consumption. The penetration rate of energy-saving doors and windows in developed countries in Europe and the United States has basically reached 100%. The penetration rate of energy-saving doors and windows in my country is only 0.4%. The low penetration rate of energy-saving doors and windows has resulted in my country's building energy consumption being more than three times that of developed countries. In the face of such serious energy consumers, fortunately, government departments have realized the importance of energy-saving doors and windows. All regions in X are formulating and promulgating more stringent energy-saving standards for doors and windows. Beijing and Tianjin have begun to implement the K value ≤ 2.0 Standard, and Inner Mongolia and Northeast China have also implemented the standard of K value ≤ 2.2.
In recent years, the rapid development of aluminum-clad wood doors and windows in China is also due to the fact that the energy-saving effect of aluminum-clad wood doors and windows has reached the standards for energy-saving doors and windows. This is mainly due to the structure of aluminum-clad wood doors and windows and the accessories used. In this aluminum-wood composite structure, wood is a material with a particularly small k value. Wood is used in aluminum-clad wood doors and windows, and the structural stability makes aluminum-clad wood doors and windows not only highly energy-saving but also very functional.
