Types and functions of common energy-saving glass

[China Glass Net] Coated Glass: Coated glass is one or more layers of metal, alloy or metal compound on the surface of the glass to change the properties of the glass. According to different characteristics, it can be divided into heat reflective glass and low radiation glass.

Heat-reflecting (sunlight control) glass, generally coated with one or more layers of metal such as chromium, titanium or stainless steel or a compound thereof on the surface of the glass, so that the product is rich in color and has appropriate transmittance for visible light. Infrared has a high reflectivity and a low transmittance to ultraviolet light, so it is also called a solar control glass. Compared with ordinary glass, the shading coefficient is lowered, that is, the shading performance is improved, but the heat transfer coefficient is not changed much.

Low-emission (LOW-E) glass is a film consisting of a plurality of layers of silver, copper or tin or other compounds on the surface of the glass. The product has a high transmittance for visible light and a high reflectance for infrared rays. Good thermal insulation properties, due to the poor strength of the film, are generally made of insulating glass and not used alone.

Insulating glass: Insulating glass is composed of two or more glass frames made of aluminum hollow frame, sealed by cement or welding, forming a free space in the middle, which can be filled with dry air or inert gas, and its heat transfer coefficient U is smaller than single layer. The glass is small and the heat preservation performance is good, but the sunshade coefficient SC is reduced little, and the heat reflection resistance to solar radiation is not improved much.

Composite of coated glass and hollow glass: including heat-reflecting coated hollow glass and low-emission coated insulating glass. The former can reduce the heat transfer coefficient and the shading coefficient at the same time, and the latter has a good light transmittance.

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