low-e glass

low-emissivity glass, low-e glass

1. A glass that has a special thin-film metallic or oxide coating which allows short-wavelength energy of the sun to be transmitted into a building, but which prevents long-wavelength energy of the heating systems within the building from escaping to the exterior; thereby conserves heat energy.
2. Same as reflective glass.
References in periodicals archive ?
Low-E glass is made with vacuum-sputtering to coat glass with several layers of different materials, achieving high transparency, low reflectivity, good thermal insulation and energy-saving properties.
Proposed revisions to the Department of Energy's Energy Star [R] window performance standards scheduled to debut as early as 2009 should make clear that generic low-e glass no longer represents a level of energy efficiency required to "transform the market", a key charter of the agency's Energy Star program.
Because generic low-e glass provides maximum insulating performance of about R-4 in a world in which R-19 insulated walls are the norm, there's a dramatic performance gap between what low-e glass provides and what green building practices promise in saving energy and reducing carbon emissions.
Despite heavily insulated walls and ceilings and the popularity of low-e glass, 25%-35% of the energy used in buildings is wasted due to inefficient glass.
Department of Energy's ENERGY STAR[R] glass performance standards (scheduled to debut in 2009) should make it clear that generic low-E glass no longer represents the level of energy efficiency required to transform the market (a key charter of the agency's ENERGY STAR program).
Because generic low-E glass provides maximum insulating performance of about R-4 in a world in which R-19 insulated walls are the norm, there's a dramatic performance gap between what low-E glass might provide and what green-building practices promise in saving energy and reducing carbon emissions.
Such internally mounted film does not replace low-E coated glass; rather, it leverages the benefits of film-based and glass-based technologies by utilizing coated glass to minimize solar heat gain while using lightweight film to maximize insulation performance, block UV radiation, reduce noise, and increase occupant comfort more effectively than low-E glass alone.
The company has three plants specializing in low-e glass in China with yearly total production capacity reaching 7.8 million square meters.
According to the major glass maker in Taiwan, it would invest at least US$250.8 million to set up five new low-e glass production lines in Taicang, Jiangsu Province of China and Changhua of Taiwan.
Lin said that currently his company operates low-e glass production lines at three locations, including Taichung of Taiwan as well as Kunshan (Jiangsu Province) and Chengdu (Sichuang Province) of China.
To prepare for the low-e glass capacity expansion, Taiwan Glass claimed, five subsidiaries in Taiwan and China would be reconstructed.
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