ENERGY g


portfolio but it also enables them to gather data for further analysis to inform wider, longer term, energy efficiency strategies.


ADDITIONAL SAVINGS THROUGH LEDS


Although EyeNut can be retrofit to any lighting scheme, installed alongside LEDs the solution provides many additional benefits. LED lighting offers several advantages over traditional light source technology. Incandescent or tungsten halogen lights are inefficient, a fact that that has to be taken into consideration more than ever as all sectors from central government to the NHS are forced to cut energy bills and prove their green credentials. Fluorescent or high intensity discharge light sources are renowned for being difficult to control. In contrast LEDs are inherently controllable, being easy to dim and instantly switchable, as well as offering significant savings in energy consumption. However it is only the advances in the new generation lighting control solutions that have allowed the full potential of LEDs to be realised.


EASE OF INSTALLATION


Early generation lighting controls had a number of drawbacks. They were difficult to commission; often requiring specialist DALI engineers to configure the system. As this could take several days and an engineer could command daily fees of between £600 and £1,000 – the cost of the configuration itself could be prohibitive to retrofit installation. Once installed there were no means of monitoring the system’s performance, a notable problem as without reliable performance data the argument for re-commissioning is difficult to make. Unfortunately the re- commissioning of an early generation system is the best way to optimise the system’s energy efficiencies.


EyeNut overcomes these challenges through its wireless networked control system, software user interface and data monitoring and analysis capabilities. It can be incorporated easily into a new build at the design stage. However it is its ability to be retrofitted into existing sites and multiple-sites that will ensure EyeNut’s ultimate success. As a wireless system, using the open protocol ZigBee mesh network, it eliminates the prohibitive costs associated with rewiring an existing site and the


disruption that this would inevitably cause. In addition it also removes the need for complex, time-consuming and expensive configuration.


ADDED CONTROLLABILITY TO LIGHTING RETROFITS


emissions it also offers, through its intelligent monitoring and control capabilities, a wide range of strategies to control output.


EyeNut not only offers an affordable and practical solution to retrofit into an existing system, allowing for significant savings on energy costs and reductions in CO2


By monitoring usage managers will be able to dim and illuminate different areas at different times to coincide with occupancy and work type. measurements from photocell sensors allows for the most efficient use of lights taking into consideration the amount of daylight available. And load shedding reduces lighting loads during peak demand and highest priced periods.


By giving managers a clear view


of lighting-related energy consumption through its comprehensive monitoring system and then the power to control it makes, the EyeNut system is an invaluable tool for any organisation serious about reducing its energy costs and carbon footprint.


Harvard Engineering has over 20 years’ experience researching, developing and manufacturing control products for the lighting industry. Its award-winning external lighting control system, LeafNut, has already been installed in street lighting across the world saving local authorities money and boosting their green credentials. EyeNut is set to do the same for the much larger indoor lighting market. www.eyenut.co.uk Email: eyenut@harvardeng.com Tel: +44 (0)113 383 1000


Public sector sustainability • Volume 3 issue 9 19


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