NEN-EN 674
Glass in building - Determination of thermal transmittance (U value) - Guarded hot plate method
| Organization: | NEN |
| Publication Date: | 1 December 1997 |
| Status: | inactive |
| Page Count: | 13 |
| ICS Code (Glass in building): | 81.040.20 |
scope:
This European Standard specifies a measurement method to determine the thermal transmittance of glazing with flat and parallel surfaces. Structured surfaces, e.g. patterned glass, can be considered to be flat. This standard applies to multiple glazing with outer panes which are not transparent to far infrared radiation, which is the case for soda lime glass products (called hereafter soda lime glass), borosilicate glass and glass ceramics. Internal elements may be far infrared transparent.
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