Case Studies | General Lighting | 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

LIFUD ZigBee Smart LED Drivers and ZigBee Convertors

LIFUD ZigBee Smart LED Drivers and ZigBee Convertors This year LIFUD expands its product portfolio with ZigBee smart LED drivers in addition to the two series 10 years warranty LED drivers. LIFUD ZigBee smart LED drivers have already been exhibited on the March Frankfurt lighting fair in Germany as well as April San Deigo lighting fair in America. ... Read more »

FEATURED

New Cree XLamp CXA2 High Density LEDs Double Lumen Output

New Cree XLamp CXA2 High Density LEDs Double Lumen Output Cree breaks performance barriers with the new Cree® XLamp®CXB1310 and CXB1520 High Density LED arrays. The new LEDs deliver the highest lumen density at 6mm and 9mm - the industry’s most lumens for their light emitting surface sizes. The advancement enables radically new and differentiated LED ... Read more »

FEATURED

SFIM-300 Spectral Flickering Irradiance Meter

SFIM-300 Spectral Flickering Irradiance Meter SFIM-300 Spectral Flickering Irradiance Meter integrates the flicker, spectra, illuminance, colorimetric measurement function. With the international patented technologies, SFIM-300 realizes wide dynamic range with excellent linearity and extremely high accuracy. SFIM-300 suits best for the on-site ... Read more »

FEATURED

New CDM10V – Compact and Highly Integrated Dimming Interface IC

New CDM10V – Compact and Highly Integrated Dimming Interface IC The compact and highly integrated LED light- ing interface IC allows designers to replace many of the discrete components used in conventional dimming schemes with a single device. Thus, it can reduce the compo- nent count and PCB space needed for dimming circuitry in LED lighting applications by ... Read more »

FEATURED

WILLIGHTING Releases Super Bright Flexible SMD5630 LED Strip with CE

WILLIGHTING Releases Super Bright Flexible SMD5630 LED Strip with CE Willighting releases a new and super bright flexible SMD5630 strip. With constant current Infineon IC driver, the leds’ brightness will be higher, about 3400lm/m in white and won’t be changed anything when the input voltage changes a little. What’s more, CE and 3 years warranty ensure high ... Read more »

FEATURED

HONGLITRONIC High Performance LED Light Engines: 10W/20W/30W AC COB

HONGLITRONIC High Performance LED Light Engines: 10W/20W/30W AC COB Guangzhou Hongli Opto-Electronic Co., Ltd., a leader in advanced components in China, announced that AC COB, the company’s new high-power LED Light Engines line-up with high light efficacy, Simplified on-board power supply, Easy Assembly, High Efficiency (> 85%), High Power Factor (PF > 0.95), Low ... Read more »

EDITORIAL

Founders of RAYLASE Receive EPIC Phoenix Award 2016 that Recognizes Entrepreneurship in Photonics

Founders of RAYLASE Receive EPIC Phoenix Award 2016 that Recognizes Entrepreneurship in Photonics RAYLASE Group has its headquarters in Weßling, Germany and a subsidiary in China, located in Shenzhen. Both entities are doing production of components, submodules and software to deflect, modulate and control laser beams in a broad variety of applications e.g. marking, drilling, cutting, engraving ... Read more »

EDITORIAL

Discussion: Lighting Flicker of LED Lighting Systems

Discussion: Lighting Flicker of LED Lighting Systems Flicker is the modulation of a lamp’s light output caused by fluctuations of the mains voltage supply. Recent research has shown that fluctuations of short wavelength emissions are perceived to a higher extent and light flicker may have a huge influence on the well-being of end users. Prof. ... Read more »

page_peel