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3. Which glazing for enhanced thermal insulation?
3.1 Bare glass
For a sheet of conventional 4 mm thick soda-lime-silica glass, also known as float glass because it is produced on a production line using float technology which consists of casting the glass on a bath of liquid tin, the heat transfer coefficient K is equal to 5.7 W · m –2 · K –1 . Heat loss is mainly due to convection from the outer wall of the glazing. In this case, for an outside temperature of – 10°C and an inside temperature of +20°C, the temperature of the inner wall of the glass is equal to – 2.3°C.
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Which glazing for enhanced thermal insulation?
Metallic thin films: Drude model
References
Standardization
French Standards Association (Afnor)
- Glass in construction – Determining the luminous and solar characteristics of glazing. - NF EN 410 - 11-1999
- Glass in construction – Determination of thermal transmittance, U – Calculation method. - NF EN 673 - 5-2003
- Glass in construction – Determination of luminous transmittance,...
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