BSEE LIGHTING CONTROLS
James Lane, Commercial Director at Open Technology, explains how you can tailor your lighng control system to suit the needs of the building and make changes at the touch of a buon.
The famous Swiss-French architect Charles-Édouard Jeanneret, better known as Le Corbusier (The Raven), once said: “Architecture is the masterly, correct and magnificent play of masses brought together in light. Our eyes are made to see forms in light.”
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At the touch of a button we can transform a building’s interior environment. Exterior lighting is also a huge impact on our surroundings and personal feelings. How much safer do you feel walking down a well lit street than a dark alley with no lighting? And how much brighter and more vibrant do our towns and villages look when the Christmas lights go up? Yes, some might overdo it slightly, but you get the point.
For all its wonderful benefits, lighting also affects the environment in negative ways, including energy usage, the materials used to produce lighting products, and light's impact on the night sky. But in recent years we have made great strides to adapt lighting technology to the environmental needs of the 21st century.
Minimum Energy Performance Standard ‘
Commercial buildings are increasingly taking advantage of the savings to be made from the adopon of LED lighng, but oen overlook the addional savings (3040% extra) that controlling your lighng can achieve.
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uLighng controls based on the DALI standard, such as LiGO from Open Technology, ensure interchangeability and interoperability of lighng system components.
10 BUILDING SERVICES & ENVIRONMENTAL ENGINEER JULY 2018
For decades the lighting market was dominated by incandescent bulbs, which, although cheap, are very inefficient as they waste most of their energy pumping electricity into filaments to make them glow. The emergence of light emitting diodes (LEDs) has revolutionised the lighting market thanks to their longer lifespans, reduced energy consumption and lower maintenance requirements. With the major advances in LED technology there is no good reason for them to be overlooked for any new build project, and the Minimum Energy Performance Standard (MEPS), which took effect on 1st April 2018, means more building managers will be looking to retrofit LEDs into their properties if they haven’t done so already. Lighting is responsible for a whopping 20% of electricity produced, but replacing fixtures alone is only part of the solution. Commercial buildings are increasingly taking advantage of the savings to be made from the adoption of LED lighting, but often overlook the additional savings (30- 40% extra) that controlling your lighting can achieve. With the advanced technology available today we can choose where, when and how we light our surroundings, and the advantages are plentiful.
Intelligent lighng control
From shopping centres and attractions to leisure centres and municipal buildings, intelligent lighting control is crucial in meeting the changing needs of the environment. Buildings already control the vast majority of systems such as heating, ventilation and air conditioning through their Building Management System (BMS), and the same can be applied to lighting.
Lighting control systems can be installed in a variety of building types and tailored to each of their own specific requirements. Galleries and museums, for example, often require particular light levels to protect precious artwork and artefacts. Retail outlets use lighting to create a comfortable shopping environment for customers, and the type of lighting used can also enhance and embellish product displays to help improve sales.
In transport environments, such as rail networks, precise lighting levels are required to ensure safety and to match lighting use to timetables and varying use. Low lighting levels
hether it’s providing a comfortable working environment, protecting our security or complementing
architectural design, lighting in the 21st century has a fundamental role to play in improving our built environment.
Adversing: 01622 699116 Editorial: 01354 461430
IN PRAISE OF LIGHTING CONTROLS Improving how buildings work for you
uCommercial buildings are increasingly benefing from the savings to be made from the adopon of LED lighng, but oen overlook the savings that controlling your lighng can achieve.
for instance are needed during quieter times to maximise savings and reduce light pollution in the surrounding area. Lighting controls that are based on the manufacturer- independent DALI standard, such as LiGO from Open Technology, ensure interchangeability and interoperability of lighting system components. These systems enable both full functionality and impressive energy savings and are suitable for all types of building, including retrofits and refurbishments, and can work alongside other building systems.
Old buildings, new tricks
One such example that shows how a modern lighting control system can be integrated into an old building and adapted to its needs is at the National Gallery in London, which prioritises the responsible use of energy in running its site. One of the projects within the carbon management plan involved replacing all of the lighting in the galleries with LED lighting. This not only reduced energy consumption but also gave the benefit of not producing UV light, which harms the paintings.
Open Technology designed and executed a project to combine the new highly efficient LED technology with an intelligent, digital control system. This resulted in combined energy savings of 85%, while maintaining a precise and consistent lighting environment.
The Gallery wanted to make good use of the daylight provided through the building’s skylight glazing. This is controlled via external louvres and indirect sensors connected to the Building Management System (BMS), which is operated by Norland Managed Services. LiGO is able to slowly augment the natural light by adjusting the light output from the LEDs. This ensures that the paintings are lit to exacting scientific standards while using as little energy as possible. The project was one of the first in the world to use LEDs in conjunction with a system that automatically adjusts external roof light blinds according to the amount and angle of sunlight.
This is just one of many examples of how interactions between your building systems can be made simple and deliver major benefits at minimal cost. A lighting control system can easily be integrated into a BMS to enable all systems to work together and produce full functionality and maximum savings, improving how your building can work for you.
www.opentechnologyuk.com L
ighting controls can improve a building’s energy performance in a number of ways:
Time control
Lighting output and settings can be matched to your building’s exact occupancy times, adapt to changes in daylight saving time and even accommodate public holidays.
Presence detecon
Lights switch on or off when presence or absence is detected. This delivers optimal energy savings whilst ensuring the building is always ready for use.
Dimming
Light levels can be controlled according to changing uses of the building, for example lowering output when the building is being cleaned in the evenings. This drives further savings whilst ensuring the building is still functional.
Integraon
Lighting control systems can be integrated into Building Management Systems to ensure that all systems work together to deliver full functionality and maximum savings.
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