Electrical Contracting News (ECN) May 2016 - Page 26

LED INNOVATION THE FIFTH ELEMENT Paul Davidson of Aurora sets out some benchmarks when designing lighting schemes and selecting LED products. A fifth attribute is now aligned to the traditional four key criteria governing LED performance. Smart technology now sits alongside thermal management, optical control, the efficacy of light and reliability of power. What’s so exciting is that ‘smart’ brings to market a sea of opportunity, connecting lighting to the Internet of Things. The ubiquitous integrated fire rated LED downlight is set to become the jewel in lighting’s crown. At Light+Building 2016 in Frankfurt this March, the very best of breed was on show, with the capability to deliver on all five ‘elements’ performing well side by side in the same fitting. We often refer to the conventional four as LED’s lighting DNA. So what are the guiding principles of best practice in manufacturing quality LED? Thermal issues Heat has a negative impact on the performance of any LED light source. The next generation in thermal management technology is able to dissipate heat away from the LED chip, providing higher quality, brighter light for longer. Products are normally warranted by a quality manufacturer to L70 for a stated number of hours which means that clients can expect a light output of 70 per cent of the lumen performance stated at that period of time. As an example, a 1,000 lumen LED luminaire will deliver at least 700 lumens after six years, based on burning 4,000 hours per year. An emerging trend in construction is to insulate the ceiling void by ‘blowing in’ loose fill insulation as an alternative to loose-laid products. Loose fill completely encloses the fitting which could affect LED performance in inferior downlights. As an example, Aurora has developed NanoDrive technology in its most 26 26-28 LED Innovation – Aurora.indd 26 11/04/2016 14:19