Lighting Applications | Jul 06, 2012

Zumtobel and the City Council of Zurich Investigate Performance of T5/T16 Lamps and an LED System in a Field-Test

In collaboration with Zumtobel, the City Council of Zurich converted an existing lighting installation into an LED-only installation and compared the latter with an identical conventional solution used for the same application.

Fluorescent lamps are considered highly energy-efficient. Depending on the type of luminaires used and their efficiency, however, the complete system does not always work equally well. Compared with pendant luminaires, for instance, the efficiency level of the popular light lines, in particular, is critical in many cases. The City Council of Zurich wanted to know for sure and, jointly with Zumtobel, launched a pilot project involving LED light lines and an optimised lighting management system. The results are amazing!

At the Administrative Centre of Werd, the Public Works Department of Zurich's City Council converted an existing lighting installation into an LED-only installation and compared the latter with an identical conventional solution used for the same application. Both corridors are fitted with a 28-metre light line each and are subject to the same conditions of use. In the case of the conventional solution, the light is switched off whenever the corridor is not used for 10 minutes; in the case of the LED system, the switch-off delay of the presence detectors has been reduced to one minute. Because LEDs are wear-free and start immediately, there is no problem with this setting.

In the case of the conventional solution, 420 W have been installed in each corridor; in the case of LED, 187 W have been installed. This means that the installed load is reduced by
56 % - at the same level of illuminance. In combination with the lighting management system and reduced switching times, this eventually results in energy consumption being reduced by 81 %!

In spring, the LED model of the energy-efficient  » Slotlight II was introduced as a standard product.

For additional details, please downloade the "Werd Administrative Centre LED Pilot Project Comparison" study or visit the Zumtobel website.

About Zumtobel:
Zumtobel is a leading international supplier of integral lighting solutions that enable people to experience the interplay of light and architecture. As a leader in innovation, the luminaire manufacturer provides a comprehensive range of high-quality luminaires and lighting management systems for the most varied application areas of professional interior lighting – including offices and educational facilities, presentation and retail, hotels and wellness, health and care, art and culture as well as industry and engineering. Zumtobel is a brand of the Zumtobel group with its head office in Dornbirn, Vorarlberg (Austria).

FEATURED

WHITE PAPER - The Calibration Traceability Chain of a Photometric LED Test System

WHITE PAPER - The Calibration Traceability Chain of a Photometric LED Test System FluxGage is a LED luminaire tester and provides a small and cost-effective solution for testing LED luminaires in 2π geometry. The black measurement surface and the lack of multiple reflections make the system much more predictable and allow using information about the DUT such as size, beam angle ... Read more »

FEATURED

Red XLamp LEDs Delivers Best-in-Class Horticulture Efficiency

Red XLamp LEDs Delivers Best-in-Class Horticulture Efficiency  Cree, Inc. announces the next-generation XLamp® XP-E2 Photo Red (660 nm) and Far Red (730 nm) LEDs, delivering breakthrough performance for horticulture applications. The new Red XP-E2 LEDs provide a drop-in upgrade for the previous generation that outperforms competing LEDs by up to 68 percent. ... Read more »

EDITORIAL

High Conductive Foils Enabling Large Area Lighting

High Conductive Foils Enabling Large Area Lighting Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP as one of the leading partners for research and development for surface technologies and organic electronics and Sefar AG, a leading manufacturer of precision fabrics from monofilaments, developed a roll-to-roll ... Read more »

page_peel