R+T markets 2018 49
Velux Modular Skylights
In order to supply flat-roofed buildings with natural light, Velux,
together with the architectural office Foster & Partners, has developed
the Velux Modular Skylight System. "While many vendors offer tailormade
solutions, we are able to manufacture standardized elements that
are easy to assemble on an industrial scale and consistently at a low price",
emphasizes CEO Jørgen Tang-Jensen as a special feature of this solutions.
Healthy indoor climate: At the new headquarters of the logistics specialist DSV, 420 elements of the Velux modular skylight system ensure a high
daytime intake and a natural air circulation. In the summer, roller blinds protect against too much solar radiation. Photo: Metzger
construction. An early communication between the architect,
daylight planner and energy experts promotes appealing solutions
without restricting the architect's creativity.
The solutions offered by Schlotterer and Hella show that sun
protection and daytime temperatures are also compatible
with one another. According to the company, the secret of
the daylight retrofitting RetroLux from Schlotterer is in the
two sections of its lamella and its special edging: the external
part reflects the sun's rays into the sky and does not allow
the heat to reach the window pane. The inward-oriented
segment directs the diffuse daylight glare-free over the ceiling
deep into the room. ”The daylight control system helps
to save energy for artificial lighting and cooling of the rooms”,
emphasizes Schlotterer CEO Peter Gubisch.
The second essential aspect of the Venetian blind is the continuous
change in the slat angle over the curtain height. The
slats are flatter in the upper part of the drawer so that a good
horizontal transparency is ensured from the depth of the
room. At the bottom, the slats gradually become steeper, so
that good downward visibility is obtained near the window.
”Transparency is an essential factor for well-being, which is
often underestimated today”, says Gubisch.
The result is a room flooded with daylight at a pleasantly
temperature, with glare-free transparency. A joint research
project with the Paracelsus Medizinische Privatuniversität
Salzburg (PMU) and the Neue Mittelschule Adnet shows that
all these aspects have a positive effect on pupils' performance.
LESS STRESS, BETTER ABILITY TO CONCENTRATE
For the investigation, the researchers had equipped four school
classes with comparable performance levels, similar spatial
positioning and sunlight exposure with different shading systems.
The result of the clinical study: For pupils of those classes,
which were equipped with RetroLux daylight venetian
blinds, stress and daytime sleepiness were reduced compared
to the classes with conventional blackout systems. In addition,
the pupils of these classes showed a faster work pace
and stood out as having a better ability to concentrate.
What's more, the RetroLux classes were able to cut electricity
consumption by almost five percent.
With the AR92 S, Hella also offers a daylight-optimized slat.
”Due to the concave-convex design, the stability is higher.
The two parts retro-reflect the sun's rays outside (outer part)
or distribute them inwards (internal curve)”, explains Paul
Hysek-Unterweger, Head of Communication at Hella. The
result is a pleasantly adjustable distribution of daylight with
a timeless design.