Double -glazed window is the largest part of the window system, the most vulnerable from the point of view of heat loss. The design of the double -glazed window consists of several glasses fixed so that the intervals remain between them. The unifying element is a metal profile that determines the distance between the glasses, that is, the width of the chamber. The stable properties of the double -glazed window are ensured due to the tightness of the cameras. The cameras themselves can be vacuum, filled with air or inert gas. Air glass packet is characterized by the presence of constant heat transfer. The air rises along the inner warm glass and drops along the external cold. Thus, the heat is excreted out, and the cold, on the contrary, gets inside. Inert gas is denser than air, therefore, its convection is lower, the heat transfer is less. The most effective vacuum double -glazed window in which there are no molecules capable of moving and carrying heat. However, their high cost makes them low.
The energy efficiency of the double -glazed window also depends on the thickness of the glass, on the width and number of cameras, on the depth of planting of the entire package in the window profile, from the sealing method, from whether there is or not at the window a warm circuit, electric heating and so on. The number of cameras in the double -glazed window is a determining characteristic. The larger the number of cameras and the glass in the package, the thermal conductivity is lower. Everyone understands that a thick window will evaporate a smaller amount of heat, but there are many other important factors. With each glass, the window becomes less light -permeable, its weight increases and the cost is also. Thick double -glazed window requires an enhanced frame and accessories. Often the thickness of the package is limited to the capabilities of the window opening. Therefore, technologically, the issue of increasing efficiency is solved not by a simple increase in the number of cameras, but due to the exact calculation of distances between the cameras and their thickness. The air gap also has a maximum width, an increase in which heat loss leads to growth. Thicker glass noticeably worsens light permeability and increases the total weight. Two-chamber double-glazed windows are most common, with a 4-millimeter glass and a 10 millimeter air gap. In conditions of harsh climate, three -chamber double -glazed windows are used, neglecting the worsening of transparency and weight growth.
But, there is another way, such as used in Rehau double -glazed windows, it is the use of heat -saving glasses with low emission. At the same time, a special spraying is applied to the glass, which includes rare -earth metals.
You can learn more about the choice of double -glazed windows Rehau from the video:
Source /Steklopakety-Rehau.HTML