The Special Features of Low E Glass

Glass is an important building material. With the continuous improvement of building decoration requirements, the use of glass in the construction industry is also increasing. However, when people choose glass doors and windows of buildings today, in addition to considering their aesthetic and appearance characteristics, they pay more attention to issues such as heat control, cooling costs, and comfortable balance of internal sunlight projection. This made the Noble Glass in the Coated Glass family, Low-E Glass, stand out as the focus of attention.

The Low-E Glass, also known as Low Emissivity Glass, is a film-based product made of a multilayer metal or other compound plated on the glass surface. The coating layer has the characteristics of high visible light transmission and high reflection to mid- and far-infrared rays, and has the following obvious advantages compared with common glass and traditional architectural coated glass:

The Excellent thermal performance

The heat loss of external door and window glass is the main part of building energy consumption, accounting for more than 50% of the energy consumption of buildings. The relevant research data show that the heat transfer on the inner surface of the glass is dominated by radiation, which accounts for 58%. This means that the loss of heat energy should be reduced from changing the properties of the glass. A more effective method is to suppress the radiation on the inner surface of the glass. The emissivity of ordinary float glass is as high as 0.84. When coated with a low-radiation film based on silver, the emissivity can be reduced to less than 0.1. Therefore, using Low-E Glass to make doors and windows in buildings can greatly reduce the transmission of indoor thermal energy to the outside due to radiation and achieve an ideal energy-saving effect.

The Another significant benefit of the reduction in indoor heat loss is environmental protection. In the cold season, the emission of harmful gases such as CO2 and SO2 caused by heating of buildings is an important source of pollution. If Low-E Glass is used, the fuel consumed by heating can be greatly reduced due to the reduction of heat loss, thereby reducing the emission of harmful gases.

The Good optical performance

Low-E Glass has a high transmittance of visible light in sunlight, which can reach more than 80%, and the reflectance is very low, which makes its optical performance greatly improved compared with the traditional coated glass. When viewed from the outside, the exterior is more transparent and clear, which means that the buildings are well-lit, and the light pollution caused by the light reflection of Large-area Glass Walls and Hollow Glass doors and windows is avoided, and a softer and more comfortable light environment is created.