A pilot project between OSRAM Opto Semiconductors and SchahlLED Lighting at a parking garage in Nuremberg, Germany, has seen the facility’s fluorescent lamps replaced with intelligent LED luminaires, resulting in impressive 70% energy savings.
Modules with Duris E 3 LEDs from OSRAM are installed in each luminaire and an integrated presence detector only switches the illumination from the default basic illumination to maximum output where this is actually required.
The LED luminaires were specially designed for applications in low-ceilinged spaces such as parking garages or warehouses. One luminaire has five modules – each fitted with 120 Duris E 3-LEDs - which provide high-quality, energy-efficient light.
Whereas one fluorescent lamp with a typical system power draw of 75 W was formerly required for the active illumination of two parking spaces, this is now achieved by just one LED luminaire with 35 W or 15 W in the basic illumination mode.
Using a presence detector, an intelligent control system in the luminaires activates the lighting in the building, only selecting maximum output in the locations where this is currently required. Only if a vehicle is driving through the garage or a pedestrian is moving do the luminaires installed in the vicinity increase their brightness to the maximum output of 35 W. As a result, the activation period per parking deck is cut to a third, or less, of the former value.
According to Erich Obermeier, managing director of SchahlLED Lighting: “By the time the project had been under way for just a few months, we had already saved a great deal of energy and hence also costs – despite it being the busy winter months. We expect the activation period to sink further in the summer. The acquisition costs for the connected luminaires will thus have paid off within as little as about three years.”
Due to their high standard of quality, the Duris E 3 LEDs can be expected to last for over 50 000 hours in this application, even operating at full load. This will also minimise maintenance costs. However, with the LEDs only operating at maximum output for a fraction of the time, a service life of well over ten years can be expected for this system.
For more information contact Ryan Hunt, OSRAM Opto Semiconductors, +27 (0)79 525 1779, [email protected], www.osram-os.com
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