Low-e glass is coated glass with common glass, but the process is different.
There are few methods and limitations to distinguish Low-E hollow glass from ordinary coated hollow glass.Generally speaking, direct observation has a higher emissivity of heat reflection. If the LOW-E is shaded, use the following method.For example, you can see if there is any mark of film removal near the border (because the first sealant butyl rubber reacts with the Low-E membrane, so the film is removed at the edge). The color of the reaction between the butyl rubber and the edge, commonly known as "golden edge" or "blue edge", is about 2-3mm. The different color of the edge depends on the type of membrane.However, this method can only distinguish offline LOW-E glass from conventional heat-reflective coating because the production process of on-line glass determines that it does not require de-film protection.
Expansion: The application of low-E glass
Single sheet of high-permeability low-E glass can make solar radiation enter the room as much as possible in mid-high latitudes with long winter time and low temperature, such as Nordic Europe, Canada and Northeast China, while guaranteeing that the indoor temperature does not transmit outward. The comprehensive energy saving effect is obvious.However, in summer, if you only use shaded Low-E glass, the energy saving effect is not obvious, after all, this does not prevent the outdoor high temperature from being transferred to the indoor.
When used on a single sheet, the surface of Low-E glass is susceptible to water vapor or other contamination in the air, resulting in a decrease in performance and service life.Therefore, low-E glass is usually combined to make hollow glass to achieve the best energy-saving performance and long service life.Hollow glass is a kind of glass where two pieces of Low-E glass are joined together and a gas is in the middle.The air in the middle makes the temperature conduction slower and provides good sun-shading and insulation.
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