Solar protection

Solar protection

The solar radiation that reaches a glass surface is reflected, transmitted and absorbed in varying proportions depending on the type of the glazing. Only one of these three qualities can be sought (this is the case of office buildings that seek to reduce the light transmission), but depending on the case, it is also possible to maintain a certain harmony between these three factors thanks to the facade engineering. Our findings and analyses will enable an energy audit and a BlowerDoor test to improve the building's performance.

The solar factor g or energy transmission represents the proportion of the energy flux that the glazing (combined or not with a blind) passes, which is expressed as a percentage of the received radiation, which is called solar factor g. It represents the sum of the transmitted energy radiation and that of the absorbed radiation then retransmitted inwards by the glazing.

If solar protection glasses are used, the g values ​​range from approx. 40% for the lightest at approx. 15% for the most successful. The use of electrochromic dynamic sunscreen offers flexibility of the value g of approx. 40% to approx. 5% with the same glass.