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Norm

ÖNORM EN 675

Issue date: 2011 08 01

Glass in building - Determination of thermal transmittance (U value) - Heat flow meter method

This European Standard specifies a measurement procedure to determine the thermal transmittance of glazing with flat and parallel surfaces. For the purpose of this Stand...
Valid
§ Legal References
Publisher:
Austrian Standards International
Format:
Digital | 14 Pages
Language:
German | English | Download GER/ENG
Optionally co-design standards:
This European Standard specifies a measurement procedure to determine the thermal transmittance of glazing with flat and parallel surfaces. For the purpose of this Standard, structured surfaces may be considered to be flat. This European Standard applies to multiple glazing with outer panes which are not transparent to far infrared radiation (in the wavelength range 5 μm to 50 μm), which is the case for soda lime silicate glass products, borosilicate glass and glass ceramics. Internal elements can be far infrared transparent. The procedure specified in this European Standard determines the U value (thermal transmittance) in the central area of glazing. The edge effects due to the thermal bridge through the spacer of an insulating glass unit or through the window frame are not included. Energy transfer due to solar radiation is also excluded. The procedure specified in this European Standard should be considered only when the thermal transmittance of the glazing cannot be calculated in accordance with EN 673. The determination of the thermal transmittance is performed for conditions which correspond to the average situation for glazing in practice.
ÖNORM EN 675
2011 08 01
Glass in building - Determination of thermal transmittance (U value) - Heat flow meter method
Norm
ÖNORM EN 675
1998 03 01
Glass in building - Determination of thermal transmittance (U value) - Heat flow meter method
Norm
Norm
ISO 8301:1991
Issue date : 1991 08 08
Thermal insulation — Determination of steady-state thermal resistance and related properties — Heat flow meter apparatus
Norm
ISO 8302:1991
Issue date : 1991 08 15
Thermal insulation — Determination of steady-state thermal resistance and related properties — Guarded hot plate apparatus
Norm
ÖNORM EN 12898
Issue date : 2001 04 01
Glass in building - Determination of the emissivity
Norm
ÖNORM EN 673
Issue date : 2011 03 15
Glass in building - Determination of thermal transmittance (U value) - Calculation method
Norm
ISO 8301:1991
Issue date : 1991 08 08
Thermal insulation — Determination of steady-state thermal resistance and related properties — Heat flow meter apparatus
Norm
ISO 8302:1991
Issue date : 1991 08 15
Thermal insulation — Determination of steady-state thermal resistance and related properties — Guarded hot plate apparatus