Top marks in energy balance
The rewards for investing in a first-class LED lighting system include both better light and low maintenance and energy costs. The Volksschule Herrenried (primary schoool) in Hohenems (Austria) is a fine example of an energy efficiency upgrade of a school building from the sixties, supplemented by a new wing. The then visionary learning environment still offers the perfect room structure for today’s teaching methods – for whole-class groups, group work or concentrated individual work. There is now no difference in quality between the existing class wing and the adjacent new building. Zumtobel’s MIREL evolution glare-free luminaire family integrates efficiently into the environment of the new building. The renovated building also benefited from efficient integration. Using the ceiling grid of the existing lighting system, it was possible to replace all the existing louvre luminaires with fluorescent lamp technology in the refurbished rooms. Compared with traditional luminaires with 4 x 18 fluorescent lamps, economical luminaires like MIREL evolution can reduce energy consumption by more than 60 per cent. And when combined with control units and sensors, even more energy can be saved. Special optics and high luminous fluxes also help keep purchase costs low as they enable bigger distances between luminaires, which means fewer luminaires are required, depending on the room situation. A further cost-based argument is the long life time of the LED lighting, which reduces the need for replacement and maintenance.
Daylight creates a favourable learning atmosphere
In addition to improved energy efficiency, intelligent lighting solutions are also characterised by a pleasant room atmosphere that supports concentrated, disruption-free working and learning. The Höhere Technische Lehranstalt TGM Wien uses a flat LED ceiling luminaire with a bright ceiling aesthetic that acts like a natural skylight. As a second-generation LED luminaire, Zumtobel’s LIGHT FIELDS micro-pyramidal luminaire guarantees highly efficient, glare-free and homogeneous lighting. A look-out sensor detects the incident light in order to automatically control the luminaire groups that run parallel to the front of the window, depending on the amount of daylight. Three predefined light scenes can be selected at the simple push of a button on the CIRCLE control point at the entrance to the room. Six and a half years is all it takes to amortise an investment in a new lighting solution. The use of LED lighting fixtures in combination with a daylight-dependent control and presence-detection system could reduce energy consumption, maintenance costs and therefore also CO2 emissions by around 50 per cent.
Maximum flexibility means increased well-being and better concentration
Alongside relevant research results, several studies looking at better light in classrooms form the basis for the development of Zumtobel’s lighting concepts. For example, researchers at Aalborg University Copenhagen developed new design criteria for light scenes in the classroom, which Zumtobel subsequently implemented. With the help of the lighting infrastructure and the LITECOM in der Herstedlund Primary School in Albertslund, Denmark. Light is intended to be used as a structuring and interactive element in the classroom. Zumtobel’s Active Light concept supports teachers and pupils with different light scenarios for learning – by using different colour temperature and illuminances, the lighting automatically reproduces the dynamics of daylight, supporting the body’s natural biorhythms. With the help of Zumtobel’s tunableWhite technology, for example, the amount of white in the light can be individually adjusted according to daylight and requirements. Depending on the lesson and time of day, bright, bluish light, which inspires feelings of openness, or reddish light, with its more discreet, private feel, encourages pupils to either communicate, carry out concentrated work, be creative or relax. A lighting management system allows the pre-programmed lighting scenarios to be easily controlled by the teaching staff. The colour settings and light intensity of all the luminaires in the classroom can be individually adjusted.
Light offers more freedom
The closer a form of light comes to imitating the characteristics of daylight, the more invigorating its effect on people. Another example of a successful lighting concept is the new primary and secondary school in Hard (Austria), usually known as the “Schule am See”. It is known for its innovative pedagogical and architectural approach, in which the lighting solution also plays its part. The new building by architects Baumschlager Hutter Partners is designed as a cluster school, in which each of the nine identical clusters is a small school in itself. A cluster structure enables the creation of partially autonomous socio-spatial units in large schools, which are manageable for pupils and teachers and help them feel at home. At the same time, the architectural principle allows many freedoms, including the freedom to reconfigure the individual rooms at any time and the freedom to teach and learn everywhere. The lighting solution developed specially for this project contributes hugely to the use of these freedoms. At first glance, no luminaires can be seen. The secret? Ultra-streamlined, white PICO LED light lines in tunableWhite. Integrated in a uniform grid flush into the white exposed concrete ceiling, they initially look simply like structuring strips. Thanks to micro-faceted downlight technology and recessed LED light points with high-gloss reflectors, they nevertheless enable optimum luminous efficacy and glare-free light. Customised daylight linking colour temperatures between 2,700 and 5,700 Kelvin are adapted to the biorhythms of teachers and pupils, thus improving well-being, attention and concentration. The lighting solution thus also contributes to a progressive, needs-based learning environment. “Teachers and students often aren’t aware of what creates the unique atmosphere in our school”, says head teacher Christian Grabher. “But it’s down to the successful interplay of architecture, lighting and interior design. And the learning spaces, which, thanks to the glass façade, the glass partitions and the invisible but powerful luminaires, are light and airy.”
Zumtobel offers four planning scenarios that can be used as a basis for creating customised lighting for any school building. All four solutions include blackboard lighting with MIREL evolution wall washers as well as a daylight and motion-dependent lighting control system (DIMLITE school KIT or basicDIM Wireless).
Zumtobel also offers DIMLITE school Kit, a lighting control system adapted for use in schools, which uses available daylight and presence-dependent lighting control. basicDIM Wireless provides a wireless alternative that enables any classroom lighting system to be modernised and controlled without the need for additional wiring. For both variants, the relevant sensors and control points are also available directly from Zumtobel.
Zumtobel. The Light.
Special lighting solution for perfect presentation
In the atrium, light plays a central role. Daylight is let in through the roof and is supported by artificial light in the form of the almost invisible light lines SLOTLIGHT infinity slim, which were integrated discreetly in the ceiling as general lighting. On the wall, minimalist linear luminaires, placed asymmetrically between the wooden slats, create striking light effects: when you enter, you notice them as objects, when you leave, you notice only their light. The continuous rows, only 45 millimetres thick, are designed to cleverly guide light around corners using 90-degree connecting elements. They have been individually shortened and bevelled. Room geometries are thus highlighted, room zones defined and corner areas placed in focus.
In the auditorium, SLOTLIGHT infinity slim was used as a continuous light line to create a kind of tunnel. The luminaires thus integrate the necessary technology for the media room and also hold the special ceiling sails that dampen the acoustics and absorb sound – for an impressive cinematic effect. In addition, PANOS Downlights ensure that the stage can be lit in multiple ways.
The vital need to integrate technical lighting into the architecture is also clearly in evidence on the office floors. The glare-free circumferential light line connects corridors and offices with rounded corners, where the technical lighting challenge lay in creating a uniform light colour on the straight and curved parts. A particular challenge for Zumtobel was the integration of the continuous rows in the acoustic ceiling sails, in which the glare-free light lines were laid diagonally, reflecting the geometry of the external façade and requiring each luminaire to be individually adapted.
This professional concealment and integration of the technology makes the individual areas of the company headquarters appear spacious and inviting. "Open spaces are important, as they enable growth", says Zaugg. "I believe that in Zumtobel we have found a partner who shares this view and works towards this as a company".
Zumtobel. The Light.
Zumtobel. The Light.
The company headquarters not only has offices and meeting rooms, but also a fitness area, a restaurant and a training centre. This building is just one part of the high-tech Infobip campus, however. The campus also includes an apartment complex for employees and guests, a car park, several sports grounds and a park. Zumtobel's challenge was to create an optimal and efficient lighting solution for the different areas of the campus, with the focus on the needs of the employees.
The result: The LITENET lighting management system has an integrated daylight sensor and controls the overall tunableWhite solution by monitoring the sky situation. In addition to greater lighting comfort, maximum energy efficiency can also be achieved through the intelligent integration of daylight sensors, presence detectors and time sensors. Automatically integrated blinds provide protection against direct sunlight. And the artificial light follows the natural rhythm in the right light colour and intensity, and in brilliant quality. tunableWhite technology ensures that the intensity and colour temperature of the luminaires can be defined completely independently of each other – for a lighting concept that follows human expectations and activities, e.g. through pre-defined static lighting scenes or automated daily routines in the office.
For optimal office lighting, Zumtobel selected the slim, linear LIGHT FIELDS evolution luminaire in the tunableWhite version. As a pendant version, it offers employees ideal light for screen work, with the best possible glare control thanks to MPO+ optic. The interaction between direct and indirect light also creates a positive working atmosphere. SUPERSYSTEM II spotlights also provide brilliant accent lighting. The basic lighting throughout the building is provided by SLOTLIGHT infinity in the form of discrete light lines. In the chill-out area, ONDARIA shines like an artificial sun. This extensive lighting fixture achieves uniform lighting of the room. The pleasant distribution of light and soft shadows also create a cosy atmosphere. In the communication zones and in the living area of the apartments, the decorative CAELA provides inviting general lighting with soft light distribution. The individual lighting solution is rounded off with SUPERSYSTEM outdoor for the outside area as well as emergency lighting through the RESCLITE and PURESIGN safety luminaires.
Light is increasingly valued as one of the most important design elements and key factors in satisfaction and motivation of employees at work. In practice, however, only around 57 percent of employees can control the lighting situation in the office according to their own needs, as discovered by the global user study by Zumtobel in cooperation with Frauenhofer IAO . The company Infobip is an employer that has now recognised how light can support and motivate people in office environments – and that is now also implementing this. One good reason why the Infobip founders were awarded the Ernst & Young “Entrepreneur of The Year” award in Croatia in 2019.
Zumtobel. The Light.