Photovoltaic
Solar energy advantage with noise protective walls
The integration of photovoltaic in existing or planned noise
protection walls represents a new challenge. They offer the double
uses of noise protection in conjunction with ecologically compatible
generation of energy. In order to devise the most technically
up-to-date solutions, Kohlhauer here works in close co-operation
with experienced partners from the photovoltaic industry and
business. Among others, items have been successfully achieved
jointly in Freising and in Zürich.
Photovoltaic noise-protective
wall Freising-Lerchenfeld
At the southern end of the Clemenssänger
industrial district, with a total length of 1200 m and a top
performance of 620 Kilowatt, the worldwide largest combined photovoltaic
noise-protective wall was constructed.
To enlarge, click on the relevant image.
On a piled up noise-protection wall of earth material along
the Autobahn, a noise-protective wall and a pillar construction
have been erected for the around 6000 square meter solar modules.
The modules are thereby so aligned with their active surfaces
that the solar radiation can be optimally used for the creation
of energy and at the same time the noise emissions of the motor
vehicle traffic for Lerchenfeld strongly reduced.
The World’s first North-South Bifacial System
in Zurich
The sound-reflecting concept of ASEA GmbH (module manufacturer)
and Kohlhauer GmbH utilizes sun light on both sides. Variable
cell packing density allows for part transparency.
Due to utilization of bifacial modules, this innovative type
of system, based on a TNC patent, allows for the use of photovoltaic noise
protection, even with north-to-south routes. According to simulation
and previously carried out test measurements, the two-way light-sensitive
solar cells, viewed on average over one year, achieve an equally
high energy yield as a system that is optimally aligned to the
south using standard modules.
To enlarge, click on the relevant image.
The world’s first photovoltaic system, consisting of
bifacial modules facing from east to west, was commissioned in
December 1997 in Aubrugg near Zurich. The generator was installed
as a replacement for an existing wall on a bridge. The photovoltaic
noise protection wall, consisting of 50 prototype modules and
10 dummy assemblies, is semi-transparent and has a total length
of 120 metres. It is sound absorbing and reflecting. Assembly
time was approximately three man-days.
