Solar Shading is the key element for improving the energy efficiency and daylight management of existing buildings and optimiising the low-energy designs of new buildings. This technology is still underutilised although it provides a major impact on the reduction of energy consumption of the built environment whilst improving the thermal and visual comfort of the occupants.
Solar shading devices enable adjustment of the properties of windows and façades to the weather conditions and the need of the occupants. A proper management of these systems can then maximise the solar heat gains in winter, hence reducing the heating loads, and minimise these heat gains in summer, hence reducing the cooling loads, while at the same time providing good visual comfort to the occupants.
In order to make the right choice in terms of products and façade management when designing a new building or preparing works to an existing one, there is need to take into consideration the characteristics of solar shading protection devices. Solar shading has an impact on the insulation level of the façade, its solar transmittance and its visual transmittance.
The technical guidebook is intended to give the basic knowledge to understand how solar shading characteristics are evaluated and what are the physical properties involved in the transmission of solar radiation. It is mainly based on calculation methods provided by European standards.
Examples of simulations conducted in Europe showing the impact of solar shading on the energy loads of buildings are presented.
The target group of this ES-SO technical guidebook is addressed to solar shading manufacturers and installers, but is also very useful to building designers and energy consulting engineers.