This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Low emissivity" – news · newspapers · books · scholar · JSTOR(August 2009) (Learn how and when to remove this message)
Low emissivity (low e or low thermal emissivity) refers to a surface condition that emits low levels of radiant thermal (heat) energy. All materials absorb, reflect, and emit radiant energy according to Planck's law but here, the primary concern is a special wavelength interval of radiant energy, namely thermal radiation of materials. In common use, especially building applications, the temperature range of approximately -40 to +80 degrees Celsius is the focus, but in aerospace and industrial process engineering, much broader ranges are of practical concern.
Lowemissivity (low e or low thermal emissivity) refers to a surface condition that emits low levels of radiant thermal (heat) energy. All materials absorb...
However, the most commonly used form of emissivity is the hemispherical total emissivity, which considers emissions as totaled over all wavelengths, directions...
The Ultra LowEmission Zone (ULEZ) is an area in London, England, where an emissions standard based charge is applied to non-compliant road vehicles. Plans...
A low-emission vehicle is a motor vehicle that emits relatively low levels of motor vehicle emissions. The term may be used in a general sense, but in...
City. The introduction of lowemission vehicles in London has received praise from the Low Carbon Vehicle Partnership (LowCVP), which awarded Transport...
radiation (IR or radiant heat). To keep the sun's heat out of the house, a low-emissivity coating should be applied to the outside pane of glazed windows. If...
The ratio of any body's emission relative to that of a black body is the body's emissivity, so a black body has an emissivity of one. Absorptivity, reflectivity...
The London LowEmission Zone (LEZ) is an area of London in which an emissions standard based charge is applied to non-compliant commercial vehicles. Its...
called emissivity (also called "emittance"). Emissivity is expressed as a number between zero and one at a given wavelength. The higher the emissivity, the...
Dry lowemission (abbreviation DLE) is a technology that reduces NOx emissions that exhausts out of gas fired turbines. The amount of NOx produced depends...
Environment European Union Emission Trading Scheme Life cycle assessment Low-emission zone Motor vehicle emissions National Emission Ceiling Phase-out of fossil...
sputter-coated low-emissivity glasses tend to have lower SC compared to the same pyrolitically-coated reflective and/or low-emissivity glass. The value...
substance with lowemissivity would be silver, with an emissivity coefficient of .02. An example of a substance with high emissivity would be asphalt...
California Center for Sustainable Energy (CCSE). The CARB first adopted the Low-Emission Vehicle (LEV) Program standards in 1990 to address smog-forming pollutants...
glass was used on some fighter aircraft canopies. Glass coated with a low-emissivity substance can reflect radiant infrared energy, encouraging radiant heat...
in London not covered by the UK government. Khan introduced an Ultra LowEmission Zone (ULEZ) in April 2019. The scheme had been initially planned by Boris...
companies are starting to replace their gas-powered fleets with electric or low-emission vehicles, a switch that companies say will boost their bottom lines,...
Day (25 December). In July 2013 the Ultra LowEmission Discount (ULED) introduced more stringent emission standards that limit the free access to the...
glass (containing a plastic interlayer called Saflex) and coated with a low-emissivity film. In 2010, the Botanical Garden celebrated the 50th anniversary...
consume are energy-plus. Low-energy buildings are designed to be highly efficient with low total energy consumption and carbon emissions—a popular type is the...
Global Information