What is Low E glass?
High transmittance low E glass is a film product composed of multiple layers of metal or other compounds coated on the glass surface. Its coating layer has the characteristics of high transmittance of visible light and high reflection of mid- and far-infrared rays. Compared with ordinary glass and traditional architectural coated glass, it has excellent heat insulation effect and good light transmission performance.
Characteristics of Low E glass
- Lower emissivity: Ordinary glass has a high emissivity, while Low E glass has an extremely low emissivity, which can greatly reduce the heat radiation transfer through the glass between indoor and outdoor, effectively reducing the energy consumption of buildings. For example, in cold seasons, it can reduce the loss of indoor heat to the outdoors; in hot summers, it can prevent outdoor heat from entering the indoors.
- High reflectivity of mid- and far-infrared rays: It has a high reflectivity for mid- and far-infrared rays, which can reflect the secondary radiant heat of objects back, achieve good insulation effect, make the indoor temperature more stable, reduce the frequency of use of heating, air conditioning and other equipment, and save energy.
- Higher visible light transmittance: The visible light transmittance is high, the lighting is natural and transparent, which can allow the room to obtain sufficient natural light, reduce dependence on artificial lighting, and create a comfortable and bright indoor environment.
- Suitable sunshade performance: Some sunshade Low E glass has a certain shielding effect on outdoor strong light, which can effectively block solar heat radiation from entering the room, play a sunshade role, and does not affect indoor lighting and visual effects.
- Environmental protection and energy saving: Due to its good thermal insulation performance, it can reduce the energy consumption of buildings, reduce the energy consumed by heating or cooling, and thus reduce the emission of harmful gases such as carbon dioxide, which has positive significance for environmental protection.
- Good decorative effect: From the outside, the appearance of Low E glass is no different from ordinary glass, but there will be slight color changes from certain angles, and the reflected light color is lighter, almost difficult to see, and will not affect the overall appearance of the building.
Applications of Low E glass
- Doors and windows: In cold areas, high-transmittance Low E glass allows sunlight to fully enter the room, while reflecting indoor heat and reducing heating energy consumption; in hot summer and cold winter areas, sunshade Low E glass can block part of the sun’s heat radiation and reduce the frequency of air conditioning use.
- Curtain wall: As part of the building’s exterior wall, it not only has good lighting and heat insulation performance, but also enhances the beauty of the building. Some modern high-rise buildings, commercial buildings, etc. widely use high-transmittance low-radiation glass curtain walls to make the building’s appearance more transparent and atmospheric.
- Electronic communication field: In some special occasions where electromagnetic waves need to penetrate, such as building windows near communication base stations, the use of specially treated high-transmittance low E glass can not only ensure good transmission of electromagnetic waves, but also achieve heat insulation and energy saving effects.
- Solar energy utilization: In the fields of solar water heaters, solar panels, etc., high-transmittance low-radiation glass can be used as a cover material to allow sunlight to fully shine on the internal heat absorption or photoelectric conversion elements, while reducing heat loss and improving energy conversion efficiency.
- Exhibition: The display cabinet glass in museums, exhibition halls and other places uses high-transmittance low-radiation glass to ensure good display effects while avoiding ultraviolet damage to exhibits and extending the service life of exhibits.
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