Low-E emission coated glass,called Low-E glass,is a film-based product consisting of a layer of metal or other compound coated with a silver layer on the surface of the glass,because the plated layer has a very low surface emissivity of ordinary glass is about 0.84,and the surface emissiviry of low-emissivity glass is below 0.15.It has a high reflectance to far infrared rays,and can reflect more
than 80% of far-infrared heat radiation from universities,with good barrier.The role of heat radiati-ion.In the summer,the secondary radiant heat emitted by the object after being exposed to the hot sun can be blocked,and the heat loss in the room can be reduced in the winter,thereby achieving the purpose of energy saving and consumption reduction of the heat insulation.Low-emissivity glass is usually used as an insulating glass,while in-line low-emissivity glass can also be used as a single piece of energy-saving glass.The thermal insulation performance of low-radiation central control glass is doubled compared with ordinary insulating glass.
Since the global energy crisis in the 1970s,governments around the world have placed great empha -sis on building energy consumption,and low-emissivity glass has been widely used worldwide.Today low-radiation glass is commonly used in public buildings and civil buildings in developed countries. The use rate of low-emissivity glass in germany is as high as 92%,that in south korea is 90%,and in Poland,75% of residential houses in the united states low-emission glass is used in one-third of public building glass.
