Zumtobel has launched Graft, its first range of LED high-bay lighting products. Designed by Arup, Graft has been developed for industrial buildings such as sports halls, factories and warehouses. Lighting manufacturer Zumtobel has launched Graft, its first range of LED high-bay lighting products. Designed by Arup, Graft is an energy efficient lighting solution developed for illuminating industrial buildings such as sports halls, factories and warehouses – helping to reduce CO2 emissions in these areas. According to the latest figures from the UK’s Department of Energy and Climate Change, warehouses account for 12.5% of all non-domestic lighting electricity consumption and CO2 emissions, making them the second most significant user of energy from lighting in the entire non-domestic sector. Graft offers an energy saving of up to 50 per cent compared to more traditional high-bay products. The product’s smart controls such as movement sensors and dimming capabilities, maximises the benefit of daylight-linked control and can further reduce energy consumption. “We’ve taken this opportunity to make a significantly better product,” said Stephen Philips, senior product designer at Arup. “Graft is more compact, easier to maintain, ensures reduced energy consumption, increased light output and a photometry range that better considers its intended application. Aside from the improved technical performance, we also needed to make sure the product represents the values of Zumtobel and what an efficient high-bay product should look like using LEDs, ensuring the product fits seamlessly in the industrial architecture context.” Graft’s tailored light geometry address common issues in spaces such as warehouse bays and open plan factories: it reduces light overlaps and shadows, providing a uniformity of light which will increase the safety and well-being of people working in these areas. This innovative product is also easy-to-install and practically maintenance-free – making it perfect to use in buildings with high ceilings. One of Graft’s major innovations is the exploitation of the heat-stack effect which ensures that heat dissipates from the LEDs. Horizontal surfaces are kept to a minimum to prevent dust settling on the light fitting – helping to keep the fixture cool and extend its operational life span. “Working together with Arup gave us the feeling that we were doing more than just fulfilling the requirements of a design brief,” said Adam Burton, global application and product management, Zumtobel. “The multi-disciplinary team enriched the development process with application knowledge, innovative ideas and active feedback from a global network. The end result is a leading product that meets both the Arup and Zumtobel standards for delivering genuine customer benefits through innovation and application-led design excellence.”
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