The three-dimensional louvre integrated into the insulating glass prevents direct sunlight from entering the interior at any time of day or year. At the same time, the Okalux roof glazing is maximally permeable to diffuse daylight due to the louvre geometry - and ensures uniform illuminance, regardless of weather conditions.
The hilly and wooded region of Clerf is a popular place for local recreation, tourism and living. However, in terms of basic services, a secondary school was lacking here for a long time. This changed with the completion of the Lycée Edward Steichen by architect Jonas Architectes Associés. On the former industrial site in the railway station district of Clervaux, an exceptional school has been created that focuses on technology and innovative learning like no other in the country. The architectural concept is also extraordinary, as is the claim to focus on quality, sustainability and energy efficiency in the materials used. The school complex comprises several wings, all of which are arranged around a central courtyard. In addition to classrooms, refectory and library in the southern part, there is a sports hall with three separate areas on the north side. The Okasolar 3D daylight system from Okalux Glastechnik GmbH used here in the roof ensures maximum natural light incidence.
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This is a louvre system in which 3D crossbars complement the main louvres to form a three-dimensional main louvre. The south-facing main louvres are made of highly reflective aluminium and have an excellent solar reflectance. The crossbars are made of equally highly reflective coated plastic. The result is a daylight system that prevents direct sunlight from entering at any time of the day or year. Actually, lateral irradiation when the sun is low in the east or west is blocked out. The values of the test measurements confirm the powerful combination of maximum reflection of direct irradiation and optimal transmission of diffuse daylight. The maximum light transmission of the Okasolar 3D louvre is max. 85% in the transmission range (without glass). The g-value is approx. 10% in the middle blocking area. Depending on the glass structure, Okasolar 3D provides up to 0.7 W/(m2 K).
Okalux
Another plus: due to the protected position in the space between the panes, the daylight system is maintenance-free. And Okasolar 3D is also convincing in terms of design: the main lamella is made from a roll-formed aluminium strip to suit the specific project, so that pieces of almost any length can be realised and the solar control louvre impresses with a uniform appearance without joints and gaps.
