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  1. Zumtobel
12 May 2010

Dynamic LED Lighting Enhances Motivation and Well-Being at the Office

Good visual conditions facilitate working, a pleasant ambiance increases employees’ motivation. Various studies have shown that light can have a positive influence on productivity and people’s well-being at their workplace.

These results have been put into practice by the Austrian utility company BEWAG during renovation of an office building in Eisenstadt. In cooperation with Zumtobel and Lumitech, a solution has been worked out, in which the approx.

85 workplaces are illuminated dynamically, depending on the time of day, by one Light Fields free-standing luminaire each. For the pilot project subsidized by the Austrian Climate and Energy Fund, the Zumtobel free-standing luminaires were equipped with LED technology. Different light colours with excellent colour rendition values ranging between 2700 and 6500 K can be called up individually via an integrated control device. The advantages are obvious: the dynamic control of light, modelled after the natural course of daylight, increases the wellbeing and performance of the employees. Modern LED technology boasts very good efficiency, saving valuable money.

In order to offer BEWAG employees in Eisenstadt an attractive working environment, the company had the core of an obsolete ancillary building completely removed and renovated the same from the ground up. The building’s friendly, modern character is obtained through the large number of glazed surfaces, enabling an extensive use of daylight.

BEWAG project manager, Dipl.-Ing. (FH) Christoph Pinterits comments: “As an energy company, we offer our customers as much information as possible on renewable forms of energy and other ways of saving energy. By implementing an innovative and efficient lighting installation in the administrative building of BEWAG Netz GmbH, we would therefore like to set an example and serve as a model ourselves.”

The joint development and demonstration project is aimed at providing for more efficiency and a pleasant ambiance at the workplace by using LED office luminaires. In the network control unit, in particular, – the heart of Burgenland’s electricity supply – which is manned around the clock, the biologic effect of light is of great importance. Accordingly, LED modules were integrated in the Light Fields free-standing luminaires by Zumtobel, both at the network control unit and in all single and double offices. The PILED® technology used is characterised by particularly good colour rendition. While the indirect light emanating from conventional fluorescent lamps floods the room in a pleasantly diffuse manner, the direct light from the LEDs is directed to the desk without any glare or scattering effects.

The user can adjust the desired colour temperature individually between 2700 K and 6500 K – in eight steps – via a simple momentary- action switch directly attached to the luminaire. Alternatively, timer-controlled daylight changes can be implemented in automatic operation. A computer-controlled software communicates predefined lighting scenes to the respective free-standing luminaire, with varying lighting intensities and light colours adjusted to the course of natural daylight. Thus, the biological and emotional effects of light can influence work processes in a positive way. At the same time, lighting in the offices is only active where it is actually required. The unlit, less bright office areas offer pleasant contrasts to the eye.

For the conference rooms, Zumtobel has provided 53 Light Fields pendant luminaires maintaining a consistent appearance in line with the offices. Suspended from the ceiling, the Light Fields luminaires impress through the perfect balance of indirect and direct light. Sufficient vertical illuminances and excellent shadow details guarantee perfect illumination of the room for round table discussions, presentations or lectures.

All offices and corridors are equipped with presence detectors, contributing to energy-efficient lighting in addition to LED technology. Accordingly, the corridor and stairway lighting often remains switched off on sunny days, as there is sufficient incident daylight. Only when it gets dark, Slotlight light lines and Cardan Spirit spotlights take over to emphasize the outlines of the building’s architecture, creating a pleasant room impression.

BEWAG Netz GmbH is also perfectly equipped for emergencies: in case of an emergency, the corridors are efficiently and safely supplied with light based on the Onlite central battery system, the Puresign LED escape sign luminaires and the highly efficient Resclite emergency luminaires.

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