142 TECHNOLOGY / LED CASE STUDY L
eft The Rietberg lighting plan sees LEDs used to illuminate 41 private houses with outstanding architecture. Local landmarks have also benefited such as the St. John’s Chapel.
Belo
w The pioneering LED guidance system for the visually impaired runs in front of the town hall.
Reitberg’s green spaces have benefited from the LED changeover, as has the banks of the River Ems which runs through the town.
for all towns with historically valuable assets, of the successful integration of energy-saving LED lighting into a historic ambience.” Triangel and Cityspirit lights from Philips have been used in the changeover and floodlights have been installed to illuminate 41 private houses that are thought to best represent the town’s architectural image. There is also a creative use of bridge and tree lighting in public
spaces.The existing 168 lighting positions in the town were reused, with around fifty positions being added, further supplemented by 41 floodlights placed on private houses, as well as thirteen bridge illuminations and the LED guide for the visually impaired. The failure of the lighting to match up to the DIN-EN 13201 specifications in places was previously criticised by the public, and in response the project has raised the quality of the lighting to DIN levels in the town centre. Linked to a network using the Powerline Communications CityTouch- System, the technology allows every light to be individually controlled and the level of the lighting to be adjusted to meet the
needs of the situation.
“The diversity of the innovative LED technology has been implemented holistically and in a representative way in Rietberg,” says Eva Schwenzfeier-Hellkamp, Professor Dr.-Ing at the FH Bielefeld University of Applied Sciences, “in various forms ranging from street lighting and facade illumination up to the light guiding installation.” She adds, “ LED technology is making a major contribution to the European Energy and Climate Protection community.”
When combined with the planned dimming of the lights during off-peak times, the changeover will produce a near 50% saving on present energy consumption along with a reduction of CO2 emissions by 29.3 tonnes a year, due to the LED’s extremely long life and efficiency. Rietberg’s commitment to environmentally sustainable projects has been considerable, the Rietberg Climate Park, built in 2011 as an information centre on climate change and climate adjustment, was created to compliment the UN’s decade of “Education for sustainable development.”
The total cost of the LED project came to just under the two million Euros allotted. From this sum around €416,000 was spent on the conversion of the street and square lighting, €597,000 for building and structural illumination and the Rathausstrasse LED guidance system came to just under €300,000.
“What is enchanting about the old town of Rietberg during the day,” says Jochen Meyer-Brandis, a lighting designer and town planner at SMB Aachen who was involved in the project, “is that it maintains and enhances its charm even more in the hours of darkness.” Residents hope Rietberg’s LED transformation will allow the town to present its best face for years to come, successfully integrating an ultra modern lighting design within the confines of an ancient and fragile town centre, highlighting Rietberg’s beauty while avoiding compromising the town’s wealth of heritage.
www.lighting.philips.co.uk
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