1. Insulating glass units and solar radiation
The solar radiation to which glazing is exposed is made up of ultraviolet, visible and near-infrared rays. The components of this radiation are shown in figure 1 as a function of wavelength.
This radiation is partly reflected, partly transmitted and partly absorbed by the glass, as shown in figure 2 .
The transmission, reflection and absorption factors, by wavelength, are the ratios of these different fluxes to the incident flux.
In the case of insulating glass units, we have to take into account multiple reflections in the direction of radiation, and vice versa. In practice, we consider only the first external and internal reflections of each...
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Insulating glass units and solar radiation
Thermal conductance of glazing: heat transfer coefficient
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Bibliography
Website
The glass portal http://www.verreonline.fr/
Regulations
FFPV professional rules
Council of State decrees – RT 2012 and certificates of compliance with thermal regulations for new buildings:
Decree no. 2010-1269 of October 26, 2010 on the thermal characteristics and energy performance of buildings
Decree no. 2011-544 of May 18, 2011 on certificates of compliance with thermal...
Standards and norms
- Glass in construction – Determining the luminous and solar characteristics of glazing - NF EN 410 - 04-11
- Glass in construction – Determining the thermal transmittance U – Calculation method - NF EN 673 - 04-11
- Appendix A – Solar shading devices combined with glazing – Calculating solar and light transmittance – Simplified method - NF EN 13363-1 - 05-04
- Appendix B – Solar shading devices combined...
Directory
CEKAL Association – French certification body for insulating glass units http://www.cekal.com
FFPV (French Federation of Glass Professionals) http://www.ffpv.org
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