Image courtesy of LuxLive.co.uk
From the 20th - 21st November 2013, lighting industry experts and retailers descended on Earls Court for the annual Lux Live Exhibition. Brimming with leading brands, innovative products, dynamic demonstrations, thought provoking talks and interactive features; this was an opportunity to judge the mood of the lighting industry and source the best new products.
The Lamp Company’s Managing Director, Ian Fursland, and Purchasing Manager, Kevin Bailey were in attendance and greatly enjoyed the intense lighting debate that went on between many industry experts.
The momentum behind LED lighting seems to have rapidly increased in the past twelve months. Toby Marlow, General Manager of sustainable development at Waitrose, revealed that all new Waitrose stores will be lit 100 per cent by LEDs from now on.
Marlow described how the retailer’s Ipswich store has undergone a complete LED refit covering office, retail and warehouse space – resulting in an overall efficacy of just seven watts per square metre, reducing running costs by up to 42 per cent. This is a huge saving and one that will send ripples around the retail world.
‘Moving towards LED has been a step-change in design,’ Marlow said. ‘We can now position light where we want it and make greater use of contrasts. Efficiency and colour rendering has improved dramatically and we’re now up to 130 lumens per watt,’ he told the audience at the event.
LED lighting first got a foothold in refrigerators and freezers, because LEDs work well in the cold, but Marlow said: ‘We’ve gone beyond refrigerators now. Everything in the Ipswich store is lit with LEDs.’
He notes a difference to the in-store ambience thanks to the clear, bright light, but said that some of the best feedback has been customers saying they didn’t notice the difference at all.
Marlow stressed that it’s important to choose the right luminaires, the right LEDs and the right design. But having said that, Waitrose has had only 33 driver failures from the 35,000 installed. ‘There’s work to do around warranties,’ he warned. ‘But we’re seeing payback in under three years, and in the new store the payback has been under two years. It’s win-win – if you do it properly.’
But it was not all about LED, it was great to see the guys at ELSA Global and hear all about the new wave of Induction lighting solutions.
How Induction Lamps Work?
Magnetic induction lamps are basically fluorescent lamps with electromagnets wrapped around a part of the tube, or inserted inside the lamp. In external inductor lamps, high frequency energy, from the electronic ballast, is sent through wires, which are wrapped in a coil around the ferrite inductor, creating a powerful magnet.
The induction coil produces a very strong magnetic field which travels through the glass and excites the mercury atoms in the interior which are provided by a pellet of amalgam (a solid form of mercury). The mercury atoms emit UV light and, just as in a fluorescent tube, the UV light is up-converted to visible light by the phosphor coating on the inside of the tube. The system can be considered as a type of transformer where the inductor is the primary coil while the mercury atoms within the envelope/tube form a single-turn secondary coil.
In a variation of this technology, a light bulb shaped glass lamp, which has a test-tube like re-entrant central cavity, is coated with phosphors on the interior, filled with inert gas and a pellet of mercury amalgam.
The induction coil is wound around a ferrite shaft which is inserted into the central test-tube like cavity. The inductor is excited by high frequency energy provided by an external electronic ballast causing a magnetic field to penetrate the glass and excite the mercury atoms, which emit UV light, that is converted to visible light by the phosphor coating.
Induction lighting is even more efficient than LED….
- Long Service Life: Rated life (IESNA) of 100,000 hours, 60,000 hours MTBF design.
- Energy Savings: Save up to 40% compared to metal halides, 13 times more efficient than incandescent light bulbs, and up to twice as efficient as compact fluorescent lights.
- High Lumen Maintenance: >70% at 60,000 hours, 65% at 100,000 hours.
- Instant On/Off: No wait time between re-strike
- High Efficiency: Lighting efficiency up to 90 lm/w
Over the coming weeks and months we will be updating Easy-LightBulbs with new, innovative products. Keep checking the blog for all the latest news!
Did you attend Lux Live 2013? What did you think of the exhibition? Please leave us your thoughts in the box below.