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Technical focus


The Role of Lighting Management in Retail


Stewart Langdown shines a light on the subject of Retail Design


Retail design takes time, vision and effort. The effects vary in intensity of light used or the light sources themselves. As we know from retailers, lighting affects the whole feel of a store. Get it right and no one will notice, get it wrong and we return to the days when customers had to take a garment to a window to check its colour! Whatever the design, there is one area of confusion - how to control lighting. Retail lighting is in essence no different to lighting any large open space; you have daylight, areas that are occasionally used and out of hours working. Linking these elements to a method of control can deliver real savings in energy and possibly the life of the light source.


One misconception is that new technology will deliver results, and reducing the installed load would be enough. I think not. Although I applaud the move towards new technology and more efficient light sources, light is not a constant and should be regulated. We design buildings to make the most of daylight, yet do not take advantage of this benefit. If we look at the design of a lighting scheme, we build in maintenance factors that allow for the lamp degrading and becoming dirty over time, which is a great idea, but means the space being over lit


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from day one. If we use a maintenance factor of 0.8 then we are wasting energy - we have over lit by 20% - so the light source, be it Fluorescent, HID or LED, is producing too much light. Modern lamps do not degrade to the extent of older lamp technologies and are stable for longer. Buildings tend to be cleaner, and with the change in luminaire design we can keep our light fittings clean and efficient for longer. Turning down the wick, so to speak, will deliver savings. Balance artificial and daylight and the savings keep rising. Controls can be used to affect mood and wellbeing, which can affect how we shop or how the staff will feel at different times. Lighting management can be as sophisticated as you wish or as simple as fixing a reduced level for trading and non-trading. Install the right system and regardless of the light source you can maximise savings and create the lighting experience your customers and staff want to be in.


Master the technology and you’ll master your lighting.


Contact:


Tridonic w: www.tridonic.com


www.a1lighngmagazine.com


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