This document specifies methods of determining the luminous and solar characteristics of glazing in buildings. These characteristics can serve as a basis for lighting, heating and cooling calculations of rooms and permit comparison between different types of glazing.
This document applies both to conventional glazing and to absorbing or reflecting solar-control glazing, used as vertical or horizontal glazed apertures. The appropriate formulae for single, double and triple glazing are given. A matrix method is provided as an alternative calculation method.
This document introduces a method to determine the luminous and solar properties of Building-Integrated Photovoltaic (BIPV) glazing.
This document is applicable to all transparent materials except those which show significant transmission in the wavelength region from 5 µm to 50 µm of ambient temperature radiation, such as certain plastic materials.
Materials with light-scattering properties are not covered by this document.
NOTE CEN/TC 129 is preparing standards on measurement and calculation of luminous and spectral properties of materials with light-scattering properties. Until this is available, the methodology in this document can continue to be applied to materials with light-scattering properties.
Angular light and solar properties of glass in building are excluded from this document. Research work in this area is summarized in Bibliographic references [1], [2] and [3].
Guidance on the measurement of luminous and spectral properties of glass can be found in the Bibliography [4].
The background to Annex E on BIPV glazing can be found in the Bibliography [11].
Vacuum Insulating Glass (VIG) is excluded from the scope of this document. For determination of the g value of VIG, please refer to ISO 19916-1 [13].
Related directives
NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.
Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
