OFFICE HEALTHCARE EDUCATION SPECIAL
APRIL 2015 | ISSUE 44 | www.luxmagazine.co.uk | www.luxreview.com
Would these people work harder under different lights? Sure, Sure, lighting lighting can can cut cut your your energy energy bills, bills, but but can can it it boost boost productivity productivity too? too?
Lighting can be such an amazing healing factor for patients on our hospital wards”
TRIED & TESTED: LED PANELS
Lux takes a closer look at 11 of the best new 600x600 panels
O LI-FI: DATA IN LIGHT O LIGHTING AND HEALTH O3 WAYS TO LIGHT A LIBRARY OFFICIAL PUBLICATION OF
Are you responsible Dave Thrower/Reds h i f tP ho t
Managing an emergency lighting network carries with it signiﬁcant responsibilities: You’ve got to comply with the latest legislation and best practice, keep energy and maintenance low and not least, ensure your building’s occupants are safe at all times.
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What exactly are my responsibilities? How can the latest technologies help me? What are the issues with self-testing, remote monitoring and LED systems? How can I reduce costs and maintenance while complying?
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EDITOR’S COMMENT 05
Let’s work smarter
ROBERT BAIN EDITOR
KATHRINE ANKER DEPUTY EDITOR
ALAN TULLA TECHNICAL EDITOR
MARK HALPER ONLINE NEWS EDITOR
RAY MOLONY PUBLISHER
GORDON ROUTLEDGE CONTRIBUTOR
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OFFICE HEALTHCARE EDUCATION SPECIAL
APRIL 2015 | ISSUE 44 | www.luxmagazine.co.uk | www.luxreview.com
Would these people work harder under different lights? Sure, Sure, lighting lighting can can cut cut your your energy energy bills, bills, but but can can it it boost boost productivity productivity too? too?
Lighting can be such an amazing healing factor for patients on our hospital wards”
TRIED & TESTED: LED PANELS
Lux takes a closer look at 11 of the best new 600x600 panels
O LI-FI: DATA IN LIGHT O LIGHTING AND HEALTH O3 WAYS TO LIGHT A LIBRARY OFFICIAL PUBLICATION OF
Cover: Will biodynamic light change how we work? Turn to page 80
hat’s the lighting like where you work? If you work in lighting, you will no doubt have a prepared answer to this question – and perhaps a brochure and a business card to go with it. Normal people, on the other hand, won’t have much to say on the topic. Why would they? The lights are just sort of... there. My ofﬁce has some inoffensive T8 luminaires which throw a bit of light on to the ceiling and distribute the rest around the room without glare. A sprinkling of dead ﬂies adds character. Standard stuff, and it’s a serviced ofﬁce, so it’s not as if we can change it. To be honest, I don’t think about the lights in our ofﬁce much – and I think about lights for a living. Does this mean the lighting doesn’t matter? Far from it. There’s mounting evidence to show that the light that we work under has a big effect on our wellbeing and productivity. This is because our stone age brains are designed to tell the time by the sun, and still interpret the colour and intensity of light as signals about what time of day it is. So working under artiﬁcial lighting – a fact of life for most of us – really messes with our heads. This fact, combined with abuse of caffeine and Haribo, helps to explain why I enter a kind of zombie state in the mid-afternoon – slumping in my chair, staring vacantly at my computer, wondering what I’m meant to be doing. Twitter @lux_magazine
If you too come over a bit Neolithic after a big lunch, don’t worry – there is hope. Today’s intelligent LED lighting systems can be controlled and tuned to create dynamic installations that change throughout the day. Energy efﬁciency may have been the key factor driving the uptake of LED, but now we’re starting to see the beneﬁts for our health and wellbeing too. In this latest special edition of Lux, focusing on lighting for ofﬁce, healthcare and education applications, we take a look some standout case studies, and the latest lighting and control technologies for ofﬁces. Turn to page 14 for our rundown of the 10 key trends in workplace lighting right now. Turn to page 83 to ﬁnd out how dynamic lighting is creating better schools, hospitals and workplaces. Check out our reviews of the latest generation of LED ceiling panels on page 98. And see how light can even be used to transmit data on page 22. This sector-focused special edition of Lux is the third of six we’re publishing this year – look out for our upcoming specials on lighting technology in May, outdoor, transport and industrial lighting in June, and our LuxLive preview in October. And stay tuned to Luxreview.com, which is where you’ll ﬁnd our latest breaking news, exclusive analysis, standout case studies, product reviews, practical advice and video reports. Enjoy the issue. YouTube youtube.com/luxmagazineuk
– We’re productive even when the lighting’s bad ROBERT BAIN Editor email@example.com 020 3283 4387 07720 677 538
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06 IN THIS ISSUE
IN THIS ISSUE 07
How Cundall’s Birmingham ofﬁce hit 4W/m2 for its lighting Page 42 www.luxreview.com
08 IN THIS ISSUE
IN THIS ISSUE 09
Light that keeps mums calm at this Danish maternity ward Page 83 www.luxreview.com
10 IN THIS ISSUE
IN THIS ISSUE 11
How lighting made this Britainâ€™s greenest university Page 56 www.luxreview.com
80 Issue 03 2015 Features
News and views News Your views Gordon Routledge Interview: Alexandra Hammond Interview: Rod Martin Named and shamed Batwing
16 24 28 32 34 94 114
WORKPLACE LIGHTING TRENDS 14 Employers have been slow to adopt new lighting technology, but they’re making up for lost time
WHAT CONTROLS CAN DO FOR YOU
ANALYSIS: NIGHT-TIME LIGHTING BAN 20 France isn’t enforcing its ban on early-hours lighting
CONTROLS IN SCHOOLS
22 Wi-Fi? Pah! It’s time for radio waves to make way for light, and the new data technology called Li-Fi
OPINION: MARCUS MARTIN
6500K LED on a cream wall just doesn’t look right” ROD MARTIN WATERFRONT PLACE, AUSTRALIA
Lux earmarks seven places at work where installing controls will pay dividends 40
Installing controls isn’t as tricky as it used to be
PROJECT: CUNDALL, BIRMINGHAM
The consultancy’s office looks great, but consumes only 4W/m2. How did they do it?
26 Don’t let installers ﬁt your controls and walk away, make sure they know how they’ll be used
PROJECT: PRIME HOSPITAL, DUBAI 48 A mixture of light sources – including incandescent – give this hospital it’s hotel-like ambience
OPINION: JAMES BERESFORD
PROJECT: MARIA HILF, GERMANY
LEDs are a great light source for emergency lighting, and cut energy use substantially
OPINION: JENNY MACDONNELL It isn’t enough to light an office the same way throughout – light for speciﬁc activities instead
Biodynamic lighting improves patients’ quality of life at this hospital’s geriatric ward 27
PROJECT: MMU, MANCHESTER 56 How Manchester Metropolitan University jumped to the top of the UK’s green universities league
14 Hands on PROJECT: DECC
64 The Department of Energy and Climate Change takes a dose of its own medicine at its London HQ
PROJECTS ROUNDUP 66 Stuck in a boring meeting? You could at least admire the lights if you worked in these buildings
Design clinic: libraries 76 Design clinic: doctor’s surgeries 78 88 Lighting economist Reviewed: 600 x 600 panels 98
Jargonbuster Lux videos Upcoming events
108 110 112
70 Get up to speed on the government’s latest plans to improve energy efficiency in organisations
LIGHTING IN UNIVERSITIES
Make a big impact on energy bills with lighting
Can biodynamic lighting really make us healthier, happier and more productive?
Reviewed: 600 x 600 panels
MAKING A CASE FOR BETTER LIGHTING 86 How the World Green Building Council can help you make the case for better workplace lighting
10 Workplaces are trailing slightly when it comes to adopting lighting technology, but the impetus for change is irresistible – as these 10 trends demonstrate
biggest trends in lighting for workplaces 1
UPGRADES THAT PAY FOR THEMSELVES
Organisations such as the Carbon Trust and Salix, which provide funding for energysaving projects, are being joined by a raft of new businesses offering to take on the upfront cost of a lighting upgrade and let you pay it for it from the savings on bills.
Controls are the big topic of conversation at the moment. Light sources are only half the story because everyone knows the most efﬁcient light source is one that’s turned off. The rise of controls has come hand in hand with the rise of LEDs, which can be dimmed and can send and receive data. Improvements in user interfaces, and the ubiquity of smartphones and tablets, are also helping. And with the rise of wireless controls and power-line communication, it’s no longer such a faff to add controls to an existing building.
FROM T5 TO LED
LEDs have conquered pretty much every lighting application – but ofﬁces have
been slower than others to make the switch, largely because the prevailing technology – T5 – is still highly efﬁcient for diffuse area lighting, and way cheaper than LED. So for many users, the numbers just don’t add up for a big LED upgrade (especially if you already have T5 installed). The tide is turning, though – LEDs are getting more and more efﬁcient by the day and are highly controllable, which unlocks quicker paybacks. As major manufacturers go all LED, it may soon be the only choice...
THE END OF THE LOUVRE?
The LG3 guide was written in the 1980s to prevent glare on computer screens. As a result, recessed louvred ﬁttings that create a cave effect became the norm in ofﬁces. But screens have changed a lot since the 1980s, as has the way we work. The latest guidance for workplace lighting puts the focus where it belongs: on people. This, together with the design freedom offered by LEDs, means you don’t see as many louvres in today’s ofﬁces as you used to. You’re more likely to see some kind of crazy modern design. That or LED panels.
ADAPTING TO NEW WORKING PATTERNS
We don’t work in the same way we used to. Mobile working and hot-desking are much more common, and people may work in different spots throughout the day. This means task lighting is increasingly important to give people control. Some countries have a stronger tradition of task lighting than others (Lux’s home country of the UK is notoriously bad at it), but it’s getting more popular. Partly because you can save energy by lighting only what you need to, and partly because it’s nice to give people some control over their own lighting.
POWER TO THE PEOPLE
‘Give people control of their lights’ is the rallying cry from designers. Or at least give them the appearance of control. In some experiments, placebo light switches that supposedly dimmed lights very gradually – but in fact did nothing at all – helped improve staff satisfaction with their lighting. Oh, and don’t let your control system be let down by a clunky user interface. Make the controls easy to use or people will just override them and they won’t be used at all.
WELLBEING AND PRODUCTIVITY
Health, wellbeing and productivity are now big considerations for workplace lighting. This usually means intense blue-rich light in the morning or at times when you want people to be alert, and warmer, softer light in the afternoon and evening when things are winding down. This mimics the change in the characteristics of sunlight through the day and makes sure our body clocks keep
ticking at the right speed. In settings where people are working, learning, or undergoing medical treatment, this is essential.
Controlling your lights is a big step forward. Monitoring the data and doing new things with it is another. By looking at how much lighting energy is used in your estate at different times and under different conditions, you can open the door to even bigger energy savings by spotting patterns and understanding better how your buildings are used.
THE INTERNET OF THINGS
The ‘internet of things’ describes what will happen when it’s no longer just computers and phones that are connected to the internet, but everyday objects and devices such as fridges, heart monitors and items in shops. Not only does this present great opportunities to do new things with lighting, it also puts the lighting industry in a powerful position – because every building in the world already has lights all over its ceiling – the perfect network
Heard of Li-Fi? It’s like Wi-Fi, but instead of sending data in radio waves, it sends it in light. This is done by modulating the light from LEDs in a way that’s invisible to the human eye, but can be picked up by a receiver attached to a computer. The result is a super-fast wireless connection. Edinburgh-based PureLiFi – recently valued at £14 million ($21 million) – is commercialising the technology (see page 22), while other companies are using similar techniques to create super-accurate indoor positioning systems.
to build on. New tech business Gooee is mass producing microchips and sensors so it can build them into LED modules through partnerships with manufacturers including Aurora.
Dubai ﬁnancial district seeks 27,000 low-energy light ﬁttings The ﬁnancial and business hub of Dubai is looking for suppliers that can replace 27,000 light ﬁttings in streets and ofﬁces with energysaving alternatives. The Dubai International Financial Centre (DIFC) is the subject of a project that is being handled by the government-owned energy services organisation Etihad Esco. The project covers ofﬁces in 15 buildings in the ﬁnancial and business district, as well as architectural lighting, outdoor areas and streetlighting. Etihad Esco sought expressions of interest from energy services companies (Escos) and consortiums that could provide ‘design, implementation, savings guarantee, service, measurement and veriﬁcation of comprehensive lighting energy-efﬁciency measures’. Those who expressed interest are going through a pre-qualiﬁcation process. DIFC is a 110-acre area in central Dubai, set up as a free zone with its own civil and commercial laws in 2004, and used as a base in the region by 22 of the world’s top 30 banks, six of the top 10 insurers and seven of the top 10 law ﬁrms.
Efficient light needed for Dubai’s business hub
Etihad Esco’s project with DIFC follows a $10 million deal that it signed recently with Dubai’s electricity and water authority to implement energy-saving measures at power stations and ofﬁce buildings. Most of the money is being spent on LED lights from Philips, with the aim of reducing energy use for lighting by 68 per cent. Etihad Esco’s CEO Stephane Le Gentil told Lux that the organisation wants to kick-start the market for energy service contracting in the UAE and the rest of the Middle East. ‘The market was really non-existent,’ he said, ‘so we’re creating it.’
Controls face Canary Wharf trial A system that controls LED luminaires over power lines could be tested at Canary Wharf as part of an innovation competition for smart city technologies. British manufacturer 8point3 LED is developing an ‘intelligent retroﬁt lighting solution’ for LEDs in commercial and industrial settings, based on powerline communication – which makes it possible to add controls without any new wiring. 8point3 is one of six ﬁnalists in the sustainable buildings category of Canary Wharf’s Cognicity Challenge, designed to drive the development of smart city technologies. It’s the only lighting company in the running. The ﬁnalists are nearing the end of a threemonth residency at Level 39 – Canary Wharf’s ‘accelerator space’ for tech startups – honing
their technologies and working out how they can be applied at the Canary Wharf development. They’ll get support from companies including microprocessor maker Intel and innovation charity Nesta. The winner of each category, to be announced later this month, will receive £50,000 and the chance to pilot its technology on the Canary Wharf estate.
Smart lighting ‘closes the age gap in ofﬁces’ Philips says ‘personalised lighting’ in the workplace can help employees of all ages see better and be equally productive. The Dutch giant’s statement is part of its efforts to market its ‘connected lighting for ofﬁces’, which it introduced a year ago and which it has showcased at The Edge, the environmentally
lauded Amsterdam ofﬁces of consulting ﬁrm Deloitte. The system lets workers use smartphone to adjust overhead lights. The lights are connected to an Ethernet network, and each light has its own internet address. ‘A 45-year-old worker needs almost double the light needed by a 20-yearold for everyday tasks,’ said Philips. ‘The one-light-for-all principle is outdated at a time when we are living and working longer. Today 30-50 per cent of people in work are over 45 years old. Over the age of 45, people begin to experience a deterioration of their near-sight vision. Research shows a 60-yearold person needs between two and ﬁve times as much light as a 20-year-old to see the same visual detail, let alone to concentrate.’
Guy’s and St Thomas’ wants to give lighting control to its patients A London hospital trust wants to give patients in its hospitals control over the lights around them. Guy’s and St Thomas’ hospitals in central London are about to start tendering for a lighting upgrade that could involve biodynamic lighting, and which could ultimately let individual patients choose light settings that suit their needs. ‘My proudest moment will be giving our patients the control to make sure that, whether they’re in their own room or in a ward, they have the ability to control the lighting and get the best experience possible,’ said Alexandra Hammond, associate director for sustainability at the environmental strategy arm of the NHS foundation trust that runs Guy’s and St Thomas’ hospitals.
Hammond said the trust is considering a number of possibilities, and that it has allocated £1 million to energy-saving lighting. ‘We’ll be looking at everything, including biodynamic lighting. We obviously have to see how we can work within the budget, but the wonderful thing about Guy’s and St Thomas’ is that it’s an organisation that thinks beyond direct paybacks. It understands that if you improve something like lighting in a patient area, it can improve the healing process, and that’s our fundamental objective,’ Hammond said. O Read the full interview with Alexandra Hammond on p32
Lighting by numbers
27,000 NUMBER OF LIGHTS TO BE REPLACED IN DUBAI’S FINANCIAL DISTRICT
£1m FUNDING ALLOCATED TO ENERGY-SAVING AND BIODYNAMIC LIGHTING AT GUY’S AND ST THOMAS’ HOSPITALS
US-based healthcare provider Cleveland Clinic has opened a 300-bed hospital in Abu Dhabi with an LED-lit façade. The steel beams that support the glass façade have been lit with 2,362 blue, dimmable LED lights from Designplan that are controlled by a Dali system. The lighting scheme was devised by Fagerhult.
PEOPLE WHO SAY THEY CAN SEE BETTER IF THEY CAN ADJUST THEIR DESK LIGHTS
WOMEN WHO REPORTED FEELING LESS PAIN GIVING BIRTH UNDER BIODYNAMIC LIGHT IN A DANISH HOSPITAL (see page 80)
Europe seeks mineral independence An EU-backed organisation wants to reduce Europe’s dependence on the Far East by recovering more rare minerals – mined in the Far East – from LED products assembled and recycled in Europe. It hopes that by making luminaires more durable but easier to take apart, more of the
costly minerals they contain can be recovered, helping Europe during future mineral shortages. CycLED, a group of 13 industrial and academic partner organisations, including Philips and Nottingham Trent University, has declared that it aims to ‘play a vital role in reusing rare materials while
creating valuable jobs in Europe’. To demonstrate what’s possible, the organisation will build a streetlight, a commercial light, an industrial light and a decorative light with the help of manufacturers Braun Lighting Solutions, Etap, Ona and Riva Lighting.
ENERGY USED IN ENGINEERING CONSULTANCY CUNDALL’S BIRMINGHAM OFFICE (see page 44)
Does light make pupils brighter? A school in the far north of Sweden thinks it might have a found a way to boost students’ performance in the dead of winter: stimulate them with bright, intense classroom lighting. The Dragonskolan secondary school in Umea has installed ‘full spectrum electric light’ to see whether it will help pupils overcome the sluggishness that plagues them during the dark of winter, when daylight lasts only a few hours. Light stops the production of melatonin, a hormone that makes people sleepy, and kickstarts the circadian rhythm. ‘Without that stimulus the body delays by a few minutes every day the signal that it’s time to wake up,’ says Dr Mariana Figueiro of the Lighting Research Center at Rensselaer Polytechnic Institute in the US. So far, the pupils like it. ‘The new lights in the
classroom fool you into thinking it’s a sunny day, says 18-year-old Henrik Anrell. ‘I think that shows it’s actually working.’ Douglas Nilsson,18, who routinely falls asleep on his morning bus rides, adds that under the new lights, ‘it feels like I am waking up’.
Nottinghamshire secondary goes LED A large secondary school in Nottinghamshire says it has slashed its energy bills and improved light quality by installing LED panels and downlights. Ashﬁeld School in Kirbyin-Ashﬁeld decided on LEDs because its ﬂuorescent and incandescent bulbs were dull. ‘The school is 50 years old and the classrooms had old,
inefﬁcient lighting,’ said Ashﬁeld School’s business manager Martin Hough. ‘Some of them still had 50W bulbs, making the lighting levels inadequate. This was an especially pressing issue because the school remains open in the evenings.’ The project started several years ago as part of a £3 million classroom refurbishment, said Tamlite, which supplied the
ﬁttings. Lighting represented about 10 per cent of the costs. The school replaced inefﬁcient incandescent downlights and T8 ﬂuorescent tubes with both LEDs and T5 ﬂuorescents. The lighting upgrade, including 300 LED downlights and 197 600 x 600 LED panels, has cut power consumption by 41 per cent, and saved £2,700 a year on the school’s energy bills.
Breaking bad energy habits The university in Albuquerque, New Mexico, home of hit US television series Breaking Bad, has installed LED lighting and occupancy sensors in an ofﬁce, a classroom and three conference rooms. Also, the University of New Mexico’s Center for High Technology Materials (CHTM) is installing automated heating and ventilation controls for the ﬁrst time. ‘Since the implementation, CHTM has reduced the total energy consumption by 21 per cent,’ the university said. The university is known for breakthroughs in solar energy materials, nanoﬁbres and other environmentally friendly technologies, but it has for years been the university’s largest consumer of electricity per square metre of ﬂoor space. The centre now has plans to extend its heating controls, and it is launching a ‘lights out’ initiative to remind students, staff and faculty to turn off the lights when they leave.
This bold construction is architect Zaha Hadid’s International Youth Culture Centre in Nanjing, China. The façade of the 68-storey building, which houses a ﬁve-star hotel and ofﬁces, costs less than £85 a day to light. This is because the building uses energy-efﬁcient dynamic colour-changing LED lighting from Philips. The computercontrolled LED installation saves an extra 60 per cent compared with a standard LED installation. The installation comprises 700,000 nodes of Philips iColor Flex MX LED lights, and Vaya Linear LED lights create the vertical lines. The 300m-high structure looks even taller because Vaya Flood LEDs project into the night sky.
Gooee bids to link light engines to the internet of things… Gooee, a company set up by the people behind luminaire maker Aurora, has set out its vision of how lighting will join the internet of things. It’s easy to speculate about the potential of millions of internet-enabled lights, but making it happen is more tricky. How do you connect the devices to the net? How do you make sure they speak the same language?
Jon Couch of Gooee sets out his vision
Gooee’s plan, revealed at Lux’s Smart Lighting Controls Europe conference in London, is to make millions of low-cost microchips and sensors (that measure things such as light levels, occupancy, temperature and energy consumption), and build them into LED light engines for installation in luminaires from various manufacturers. Gooee says it has already made the big investments needed to develop the technology, and rolling it out on a huge scale will keep the cost per unit low. Beginning with Aurora and its retail lighting division Microlights, Gooee aims to get its technology incorporated into as many LED luminaires as it can. It wants to become the ‘operating platform’ on which third parties can build their own smart lighting interfaces and apps.
…as Acuity stakes its own claim Acuity is working with smart lighting networks ﬁrm Sensity Systems to add intelligence to outdoor lighting in cities and in ofﬁce, retail, airport and university applications. California-based Sensity specialises in embedding sensors and internet links into luminaires and tying them into a ‘light sensory network’.
The technology is intended to help boost lighting’s role as the backbone of intelligent information networks. Cities, for example, could use lighting networks to watch trafﬁc and to reroute commuters accordingly. ‘An integrated platform that provides energy-efﬁcient LED lighting with a sensor network to capture and transmit near
real-time data will further enhance the business case for LED luminaire installations,’ said Acuity CEO Vernon Nagel. Atlanta-based Acuity, a $2.4 billion (£1.6 billion) company that markets LED lighting under a variety of brands, said the move would help connect lighting into the ‘industrial internet of things.’
Barcelona is smartest city – for now Barcelona has been named the world’s smartest city – followed by New York, London, Nice and Singapore – in a ranking by market research ﬁrm Juniper. But Dubai has got its eyes on the smart city prize. The Smart Dubai initiative, a three-year plan launched by the city’s ruler Sheikh Mohammed bin Rashid Al Maktoum, will develop smart grids, meters and apps to help individuals and businesses cut their energy use. Lighting control will be a key part of this, with ‘connected’ lighting products becoming more
popular for residential, ofﬁce and public lighting applications. The project will also promote the use of solar power and electric cars. Dubai’s electricity authority and telecoms company Du have announced they are to develop ‘smart solutions’ as part of the initiative. Osman Sultan, CEO of Du, said: ‘Du’s efforts will help enhance these networks and upgrade them from conventional networks to digital smart networks.’
Here comes the graphene LED lamp In a few months you’ll be able to purchase a light bulb made with miracle material graphene. The lamp, from UK startup Graphene Lighting, ‘is expected to perform signiﬁcantly better and last longer than traditional LED bulbs’, according to the University of Manchester. ‘It is expected that the graphene light bulbs will be on the shelves in a matter of months, at a competitive cost.’ The university has a ﬁnancial stake in Graphene Lighting, which is a spin-out from the National Graphene Institute, founded at the university with British and European government funding to advance commercial applications of the material. The University of Manchester is the birthplace of graphene. Scientists Sir Andre Geim and Sir Kostya Novoselov isolated the material there in 2004, and won the 2010 Nobel Prize for Physics. Graphene Lighting will coat its lamp’s LED chips with graphene, improving its heat dissipation, the university told Lux. A BBC News story suggested that the lamp will cut energy consumption by 10 per cent over other LED lamps because it enhances electrical conductivity. The university told Lux that ‘it’s too early to say’, whether the 10 per cent ﬁgure is accurate.
20 NEWS ANALYSIS
Analysis: France has banned businesses from leaving lights on at night. But who’s policing it? The response to France’s ban on night-time lighting has been mixed. Not surprising, since no one seems to be monitoring it
he French government is failing to enforce its ban on leaving lights on in unoccupied ofﬁces and shops at night, according to the French dark sky association ANPCEN. The association has been keeping tabs on the effect of the night light ban since it came into force in April 2013. In its latest report it says progress has been made in some places, but the picture remains patchy and there is ‘no monitoring’ by central or local government. Lux contacted France’s Ministry of Ecology, Sustainable Development and Energy for comment, but no reply had been received at the time of publication.
The dark night The night-time ban on interior and exterior lighting in non-residential buildings such as town halls, schools, ofﬁces and warehouses stipulates that lights should be off between 1am and 7am. Shop window lighting, too, must be dark between 1am and 7am. If activities in a building go on beyond 1am, the lights should go off one hour after the last person leaves. There are a few exceptions, such as tourist attractions, where lighting will not be banned. An important objective is to reduce light pollution, which can harm health and disturb sleep. Delphine Batho, the former Ecology and Energy minister, said the law would make France a pioneer in Europe in preventing lighting pollution. But the key goal is, of course, signiﬁcant energy savings. The French government expects the move to save about 2TWh each year, equivalent to the energy consumption of 750,000 homes. This would cut annual CO2 emissions by about 250,000 tonnes. If the energy reductions are achieved, the ban will save €200 million (US$216 million) in energy costs. At the time of the 2013 announcement, the French lighting
industry was cautiously positive. Domestic lighting supplier Lights 4 Living commented: ‘This is an interesting approach by the French to save energy and tackle the problem of wasteful overnight lighting. ‘The imposing of ﬁnes and punishments is a good incentive to think about energy more. This may make others think about their own home lighting and what lights should be left on.’ French lighting consultant Christophe Richon of LuxFit said: ‘What’s interesting is it’s the ﬁrst real move from the government towards a public statement on energy efﬁciency.’ However the Syndicat de L’Éclairage, France’s lighting association, challenged the government’s projected savings, declaring 2TWh a year to be too optimistic and predicting that the real savings would more like 0.5TWh. In the two years since the law was introduced, results have been mixed. Over the ﬁrst 12 months, Progress energy wastage associated with has been made nocturnal light pollution dropped by around nine per cent. in some places, In its study of changes made but the picture is in cities and towns around the patchy, and there country, ANPCEN found that some municipalities are saving is no monitoring tens of thousands of euros a of the law by year on electricity as a result of central or local turning lights off at night. The town of Saumur in the Loire Valley, government” for example, has saved €84,500 (US$90,900). But ANPCEN added that while cities including Paris, Lille, Angers and Saumur had made good progress, Lyon, Chambery, St Junien and many others ‘could do more’.
Mixed results A recent study of 32 tower blocks noted that a quarter have actually shown an increase in night-time lighting, ranging from over 50 per cent to 130 per cent. Others, however, have reduced night-time illumination signiﬁcantly, from around a third to two thirds of previous usage patterns. The overall energy savings from ofﬁce blocks that have reduced lighting are equivalent to more than 6465MWh over
The city of light isn’t as light at night as it used to be
the course of a year. ANPCEN said that building owners have now had more than enough time since the law was announced to digest it and work out how to comply. Those breaking the law risk ﬁnes of up to €750 ﬁne (US$810) – but only if someone’s actually enforcing it.
Wrong target? Some have suggested that in terms of energy savings, the French government may be aiming at the wrong target. Syndicat de L’Éclairage technical director Sébastien Flet Reitz has pointed out that since the vast majority of lighting energy is actually consumed during daylight hours, reducing light use during the day would produce more signiﬁcant savings. The association has estimated that lighting controls used day and night in non-residential buildings could save as much as 16TWh. It would like to see government support for measures such as presence detection, daylight dimming and energysaving retroﬁts. Critics of the night-time lighting ban have pointed out that services such as air-conditioning and heating are also energyguzzling, sometimes unnecessarily, and could be more effective targets for government action.
22 NEWS ANALYSIS
Analysis: Is Li-Fi the next generation of wireless communication? In the office of the future, the luminaires won’t just provide light, they’ll also provide your internet connection, writes Robert Bain
n the ofﬁce of the future, the luminaires won’t just provide light, they’ll also provide your internet connection. A new technology called Li-Fi can encode data in the light from normal LED luminaires, turning your ofﬁce lights into a high-speed data network. It’s done by modulating the light in a way that’s invisible to the human eye, but can be picked up by a receiver plugged into a computer. Li-Fi is faster than Wi-Fi, more energy efﬁcient (since the lights are on anyway) and eliminates interference problems with other electronic devices. And because light doesn’t go through walls, it’s inherently secure. Plus, the main element of the network – the light ﬁttings – already exists in every building. The technology could also solve a growing problem with wireless communication systems: the radio frequency spectrum is overcrowded and we’re running out of space. The visible light spectrum is 10,000 times bigger, so Li-Fi is well placed to become the next generation of wireless communications. One of the companies pioneering the technology is Edinburgh-based PureLiFi, which last year received a £1.5 million ($2.2 million) venture capital investment, valuing the ﬁrm at £14 million ($20.7 million). PureLiFi’s co-founder and chief science ofﬁcer Professor Harald Haas says: ‘Twenty-ﬁve years from now, the LED light bulb will serve thousands of applications and will be an integral
This school in Kent is already using Li-Fi in its classrooms
Professor Harald Haas holding the component that receives light from luminaires and turns it into cat videos
part of the emerging smart cities, smart homes and the internet of things.’ The company has completed the ﬁrst phase of a groundbreaking Li-Fi trial at the Business Academy Bexley in Kent, which Haas says generated ‘tremendous excitement’ among students. It has now launched a commercial Li-Fi network system, Li-Flame, which it demonstrated recently at a major mobile technology show in Barcelona. To use Li-Flame, you need to attach Li-Fi access points to the luminaires in your ceiling, to encode data into the light. In practice, not all the data is actually carried in visible light – the ‘uplink’ from your computer back to the access point comes Li-Fi could from an infrared transmitter that you plug into a USB port. solve a growing PureLiFi says the system can problem: we’re be used seamlessly with mobile running out of and Wi-Fi systems, so you can wander between them without space on the your session being interrupted. radio frequency This means Li-Fi could spectrum” complement existing networks, rather than users having to choose one or the other. Haas believes the technology will change the face of wireless communications – not to mention changing the face of the lighting market. ‘Li-Fi is the catalyst for the inevitable merger of the lighting and wireless communications industries,’ he says. ‘It’s a communications technology that relies on and encourages bespoke lighting design. We believe there is an impending shift away from lighting products to lighting solutions that are fundamentally a means of addressing the customer’s requirements.’ And as our appetite for sending data back and forth continues to grow with every new technological innovation, it’s looking increasingly likely that technologies like Li-Fi will have to step in to keep us connected.
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24 YOUR VIEWS
Where’s the good human-centric solution? The bummer with ﬁxed (not smart lighting) LEDs is that they are worse for your health than incandescents, which are bad enough. Human-centric lighting offerings that show promise of taking advantage of smart lighting technology are just too tepid, and emit a lot of blue at their lowest CCT settings with only a rare few exceptions. There is nothing on the market today worth installing. Today, the best available human-centric lighting that is smart is incandescent heavily dimmed with funky old school Lutron scene controllers. The dark side of smart lighting is that it’s not here yet in any clean, simple, and healthy conﬁgurations. DALE DELL’ARIO Ario Lighting
Dim, but with all the wrong excuses I have just spent a month travelling around the UK to see the extent of poor quality products hitting the market. I saw many LED panels that have gone dim in showrooms, the representatives stating to the clients on more than one occasion: ‘We will need to change the driver.’ With a constant current formation, if it has gone dim it is not the driver but the cheap diodes and poor thermal management. Another great call was from a client wishing to buy purely LED drivers to suit panels because a warranty claim had been voided over the line voltage being 245V. All good LED drivers will generally be 110-277V to accept ﬂuctuations. BARRIE VESTY Auralux/Auraled Lighting
If we can improve lighting in patient areas, that can only improve the healing process” Alexandra Hammond, associate director of sustainability, Essentia, p32
Reader Sophie Langkjær took this picture on a spring evening in Kent, England. It was the day of the solar eclipse, she tells us, which was invisible thanks to the clouds, which then cleared as soon as the eclipse was over.
How can the best LED products win? Anyone in the industry with a shred of professionalism will be sick and tired of the LED p*ssing competition: mine is bigger, better, smaller, brighter, more colourful than yours. I have invested more than two years of my life and my own money (real savings) to design and develop professional lighting products that are world class and do not copy anyone. I do, and will have to, jump through ﬂaming hoops, tumble four times and land with one foot behind my ear, smiling while whistling my national anthem to gain approval and market traction. The whole time I am doing my
lighting gymnastic ﬂoor routine, there is an ever increasing pile of cr*p coming on to the market promoted through a myriad of pop-up lighting companies, and in the stores and press. Not a rant, but there is a big kernel of real truth in my comments. MARK CUNNINGHAM Trinity Lighting UK
Here in Germany we have an independent consumer consulting agency with a representation in all bigger cities. All consumers can call, mail or ask there about all and everything which is in the market for sale. They also monitor the shops and have frequent tests about products offered which are
The principle is about making lighting smarter, making it work more efﬁciently for you to its maximum capacity, making sure it’s integrated with other systems and making the best use of that” John Hindley, head of environmental strategy, Manchester Metropolitan University, p56
printed in a national magazine. If a product is not correctly marked or described, shops are forced to take it off the shelves. If there is danger, there is an warning in the news and papers. Could this be a principle to be established in other countries? THOMAS ROEDING Insta Lightment
The UK has the Trading Standards. The problem is it deals with every industry so in lighting they are as useful as a chocolate teapot. BARRIE VESTY Auralux/Auraled Lighting
One person’s standard is an opportunity for those with lesser standards to make a quick buck. The people selling cr*p know full well what they are doing, they are and always will work to their own standards, but the resellers are complicit in the promotion of the cr*p. MARK CUNNINGHAM Trinity Lighting UK
LEDs are already better than halogen Any lighting designer worth their salt today should know that many second generation LED products are far superior to halogen in all respects – colour, distribution, lifetime, and especially efﬁciency. Just because there are still many inferior LEDs on the market
YOUR VIEWS 25
doesn’t mean there won’t be much better products in wide availability soon While preparing a talk on lighting history, I found an old advert for a new gas lamp, circa 1920, that claimed they had ‘surpassed’ electric lamps. Nostalgia, especially for warm beautiful light, is a far more potent force than a lot of LED marketers realise. The nostalgia is there in part because people hate change, but more importantly, people really want – and need – beautiful warm light. They just don’t quite realise yet that you can get it, and more, with the right LEDs today. CLIFTON LEMON Marketing consultant
CORRECTIONS AND CLARIFICATIONS In our reviews articles on LED tape (Lux hospitality special, February 2015), we said the Aurora LED tape required a 12V power supply. In fact, it requires a 24V power supply. The product was tested with the correct 24V power supply. Also, the article was illustrated with a photo of the foyer of London’s Hammersmith Apollo. It has been pointed out to us that LED tape was not used on this project. The product used was Radiant Architectural Lighting’s 3D LED Flex.
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WHAT’S HOT ON TOP TWEETS Jonathan H Ratty @jothebulb @paulnulty @Lux_magazine @inessa_d_a LEDs now lighting equivalent of bacon: there is nothing that cannot be improved by addition of either. EasiLume @EasiLume #Halogens have had their day. The sooner they’re banned the better! bit. ly/1KP8P48 @Lux_magazine design conscious @designconscious Chuckles > “@Lux_magazine: Did you know Fifty Shades of Grey is actually all about lighting? luxreview.com/ news/628/did-y… #ﬁftyshades” Dale Fisher @dalef1sher Enjoying a nice pint in #allbarone after @Lux_magazine great conference. Looking forward to the next one #luxslc Michael Grubb Studio @mgrubbstudio The future of lighting? Fascinating presentation on the Internet of Things at @Lux_magazine Smart Control conference
WILL SMART LIGHTING SPY ON US? The straight answer is yes, or at least to some extent. But I don’t see this as becoming an issue any more than the other pervasive technologies that a signiﬁcant portion of the population grasp with enthusiasm. We are all quite happy to share with supermarkets what we buy each week, Google and Apple know where we have been, LinkedIn harvests all our mail addresses without our permission. Willie Donaghy, associate consultant Rather than say ‘spy’ why not welcome interaction with us? Ash Gupta, marketing and PR specialist If we can collect humidity data and ‘optimise’ the working environment, that sounds like a good thing. Once the generation Y-ers cotton on to indoor air quality as the next big wellbeing issue, the market could explode. David Laurence, Adaptive Wireless Solutions Rather than the spy question, think of how you could improve navigation through the city, avoid pollution and so on – all real problems in any city. You are right about interaction – I welcome data to the conversation. Steven Livingstone-Perez, Paramount Ventures
Twitter @lux_magazine and @luxreview
Yes of course it will spy on us. It will be at the discretion of the systems owner to choose to either ignore, use or abuse the intelligence gathered. But the spying will already have taken place. However, we must live in hope that the information gleaned will predominantly be used for the greater good. Pat Tully, Lidacel
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ow that lighting controls have become a standard element in virtually all non-residential lighting projects, it is becoming increasingly important to consider how those controls will be used. It is no longer good enough to just tick the box that says ‘lighting controls installed’. We must be aware of how they will be used and in what circumstances – and to specify them accordingly. Breeam environmental assessments now place greater emphasis on consultation with the client on their operational requirements, and this has particular relevance to controls. The education sector has some overlaps with other lighting control applications, but also has a lot of its own requirements. It is no longer For instance, the Building Regulations are set to encourage good enough wider use of graduated dimming to just tick the in classrooms to ensure that box that says the lit environment supports learning, while minimising energy ‘lighting controls consumption. Such lighting installed’” control strategies also need to enable the teacher to adjust light levels in most of the space when required to draw attention to the front of the classroom. Just as importantly, such controls need to be very easy to use by teachers or caretaking staff. Another characteristic of educational facilities is variable occupancy – classrooms may be in use for most of the school day during term time but in the evenings and during school holidays they will only be used occasionally. Occupancy detection is clearly desirable, and selecting the right solution can deliver signiﬁcant savings. In a classroom, for instance, a single microwave detector may offer the same level of control as two or more PIR detectors, thereby reducing capital costs as well as cabling requirements. Lighting controls are rising to these challenges through new products that are geared to speciﬁc sectors rather than being an off-the-shelf ‘catch-all’. When specifying controls, go for suppliers with the right combination of knowledge, experience, product range and a proven track record.
ith NHS budgets under growing pressure, it is becoming increasingly important to reduce costs in non-clinical areas so that funding can be channelled into patient care. Using LED light sources in emergency lighting will deliver a very signiﬁcant reduction in the power consumption of the systems. These beneﬁts are probably greater in healthcare applications than other projects because emergency lighting needs to provide higher levels of illuminance in critical areas. In fact, because evacuating a healthcare facility is often more complex than other buildings, there are generally more stringent demands on the emergency lighting. It is essential to carry out a thorough risk assessment when designing the emergency lighting systems for these buildings. Another advantage of LED lighting, of course, is the longer life of the light sources so that the maintenance costs associated with replacing lamps are greatly reduced. In parallel, capital and installation costs can be reduced by integrating emergency lighting into the general luminaires. However, perhaps the biggest saving comes from using centralised monitoring and testing systems for emergency lighting. This avoids the need to have maintenance staff walking around the building making visual checks. Instead, all of the test Using LEDs data relating to any faults can be viewed on a central computer. in emergency Technologies exist to maximise lighting delivers battery life and reduce power big reductions consumption through intelligent charging regimes which apply a in power charge when needed rather than consumption” a continuous charge. Adaptive charge regimes reduce power consumption and extend battery lifetime to reduce long-term operating costs. While it’s vital never to lose sight of the safety-critical role of emergency lighting, it’s also important to apply the right technologies, in the right way, to deliver cost-saving solutions that also address all of the safety criteria.
OPINION 27 L I G H T I N G
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ood lighting is essential in the workplace and in recent years lighting technology has evolved, with a big shift to LED lighting. Ofﬁce lighting is now designed to suit speciﬁc activities rather than generic coverage of the ofﬁce space. It is no longer acceptable to light a large expanse of ofﬁce carpet to 500 lx. In recent years we have also seen a shift away from the traditional ofﬁce layout of desks and meeting rooms, and good lighting needs to suit the demands of these different areas and tasks. We’ve also seen businesses increasingly use lighting to create a mood: uplighting for beams and sofﬁts can create a more relaxed workplace, for example. Eighteen months ago the British Council of Ofﬁces published its Guide to Lighting, which provides a practical interpretation of the requirements of Office lighting existing standards and guidance. is now designed The guide sets out some of the to suit speciﬁc most important aspects of lighting in the workspace, and highlights activities rather that the best lighting for any ofﬁce than coverage of is natural daylight and it should the whole space” be used effectively. Also, the guide advises that organisations must reduce the amount of energy consumed by ofﬁce lighting, by complying with the latest energy efﬁciency standards. The guide also addresses the science and principles behind the lighting criteria for visual comfort and performance. The key message is that ofﬁces must provide comfortable lighting for the people within the space. The primary goal of ofﬁce lighting should be to promote good visual communication for occupants, with well-lit vertical surfaces and an interesting degree of contrast. Finally, the guide provides practical advice on how to address the three development stages of an ofﬁce ﬁtout: shell and core (focusing on lobbies and toilets), category A (coordinating lighting with ceiling systems and mechanical services) and category B (the ﬁnished ofﬁce, which is usually the occupier’s responsibility).
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28 OPINION GORDON ROUTLEDGE
Reality check Can better lighting improve productivity in your business? Gordon Routledge, lighting expert and publisher of Lux
started my working life 1992 in a PCB factory was wasted above the ceiling. in the north of England. It was a baptism of This meant that for six days a week during ﬁre: the manufacturer in question had just the winter months, I never got to experience been acquired and was in the process of being daylight. I entered the building when it was dark turned around in what was, and still is, a hugely outside, and left when it was dark outside. It was a competitive electronics industry. strange existence. My boss was a guy called Alan, a man who Despite Alan’s best efforts, the factory rumbled left no cost-reducing stone unturned, even if this on for a few more years, and eventually closed, meant getting rid of a few hundred people or unable to stop the tide of manufacturing drifting to replacing a staffed full-service canteen with a row the Far East – probably to factories with lighting a of vending machines – that’s what had to be done hundred times worse. to save the business. Monty Burns would have The challenge lighting always faces in the admired him. workplace is that it is seen as a pure cost, not as a Alan was a seasoned turnaround productivity tool that can affect your expert, who was proud that, on a mood and your ability to perform previous mission, he knew he was tasks. Lighting is starting to make a difference when I was amazed to hear a seen as a cost, not he drove home one night and presentation at our recent retail as a productivity found that someone had sprayed lighting conference about a lighting in a local bus stop outside the design approach at a women’s tool that can factory: ‘Alan M***** is a bas****.’ clothes shop in Germany that affect your mood So what has this got to do with resulted in a 12 per cent increase in and your ability to lighting? Well, as the cost-cutting sales. If this continues to be the case, juggernaut rolled on, I found then I’m sure retailers will crawl over perform tasks” myself removing half of the broken glass to adopt it. ﬂuorescent tubes in the My thinking is, does this sort of multi-lamp ﬁttings – as an instant energyapproach stack up in the workplace? Can lighting saving measure. drive productivity, improve the It worked. We reduced lighting-related way people feel about their energy use by 40 per cent in a matter of employer or their absence? days, which was a big number in a 24/7 There is a growing body of factory. Nobody really noticed, because they evidence that indicates it does, were more concerned about losing their jobs but not many people have turned this improvement into and bacon sandwiches from the canteen hard cash. than the loss of a few hundred lux on the working plane. Put a proposal on Alan’s The strange thing was, this particular factory desk that says giving people was built in the 1930s and had north-facing access to daylight, and the windows, so was bathed in daylight. However, right type of artiﬁcial lighting, in the 1980s it was modernised and someone can improve productivity installed a false ceiling to give a the place a more or reduce errors. Then he modern feel, at the same time blocking out all may change his pennyof the light, which meant the factory needed pinching ways. And reduce constant artiﬁcial illumination and the free light local vandalism.
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32 WHAT I BELIEVE ALEXANDRA HAMMOND
We are investing upwards of a million pounds in lighting at Guy’s and St Thomas’”
WHAT I BELIEVE 33
Alexandra Hammond Associate director of sustainability, Essentia, Guy’s and St Thomas’ NHS Foundation Trust, London, UK The hospital cares about its impact on the environment and society I work for Essentia, which is part of Guy’s and St Thomas’ NHS Foundation Trust. I’ve worked for Guy’s and St Thomas’ for the past six years as head of sustainability. That role continues, and we are also able to offer our expertise to other public sector organisations. I look at everything to do with environmental and social impact for the hospital. And lighting is a big part of our energy strategy. Upgrades are a challenge – but also an opportunity I would say the biggest challenge we face is upgrading in areas that are quite sensitive, for example patient areas. Also making sure that we don’t get in the way. The exciting thing is that there are lots of opportunities, so if we can improve lighting in patient areas, that can only improve the healing process. Our budget can accommodate change We have a pretty comprehensive lighting upgrade programme across our two main acute care sites. We are investing upwards of £1 million ($1.5 million) in lighting at those hospitals. What we’ve done is to have an audit on their current lighting, and identiﬁed savings opportunities for a like-for-like change. But when we tender for the work – which we’ll be doing shortly – the idea is that we’ll be looking at everything, including biodynamic lighting. We obviously have to see how we can work within the budget, but the wonderful thing about Guy’s and St Thomas’ is that it’s an organisation that thinks beyond direct paybacks. Interestingly, the lighting project that we’re doing is part of a big energy-saving project that the trust is undertaking, so it’s about a £12 million ($17.8 million) overall investment in energy efﬁciency, and lighting comprises about a £1 million of that. What we’ve done is present the business case to the trust with a certain level of guaranteed savings. We’re doing an energy performance contract, so we have a partner that underwrites the savings. If it works within that budget and we get the savings back in, then they’re happy. We want our patients to have control I would love to do something creative in our patient areas, particularly on the care wards. We have a lot of patients that are in our wards for a signiﬁcant amount of time, and lighting can be such an amazing healing factor. Conversely, the wrong lighting can be quite difﬁcult for people, so it’s important that we get it right. It gets exciting and interesting when you start to see how patients interact with light and how they can control it themselves and improve their stay while in hospital.
LEDs are our default choice now We do all our own internal maintenance, and we are very strapped for resources. We have an in-house engineering team and they’ve got lots to do. We’re a quite complex, variously aged estate, so the more that we can remove from them maintaining the basics, the better. If we can put in lighting that’s going to stand the test of time, that’s so helpful for us and gives us resources to do other projects. The guidance we have is: ‘If not LED, justify why not.’ In some areas, we’ve upgraded to T5 so the payback is quite slow. But for the most part, we are moving to LED where we can. We want our patients to be involved My proudest moment will be giving our patients the control to make sure that, whether they’re in their own room or whether they’re in a ward, they have the ability to control lighting to give them the best experience possible. And that it actually works, because if the light switch is on and it’s right above the bed and it’s shining right in their eyes, that’s not going to do anyone any good. The other thing is that we really ought to involve our patients in the process. We want to do some trials and get people to say: ‘I like this, I don’t like this.’ We’ve got the funding, which is the big thing, and we’re tendering for lighting in the next couple of months. My job is to make sure it doesn’t become a like-for-like switch-out, which it could. In some areas it will. That’s the sensible thing to do in some areas, but in others we need to be more creative. One of the things I really am pleased about is that we’ve introduced photocell-controlled lighting almost across the board. We’ve eliminated the areas where we have lights on and bright sunshine at the same time. I’d like to see more transparency and standards One thing that would be really helpful with LEDs is more transparency in the way they’re manufactured and the quality. There’s still an element of having to go to the right supplier, the right manufacturer, the right… and that, I think, adds a premium to the likes of Philips. But I also think that manufacturers could really help standardise. When we build a new ward, there’s a standard set-up for a hospital bed. It’s the number of plugs around the bed. It’s where the table goes, it’s where the lighting goes to a certain extent. It’s where the patient entertainment system is, and it’s a kind of standard thing, so we don’t recreate it every single time we do a new ward. It would be really good if there were a sort of standard set of principles that we could apply to patient areas. That would help us reduce the design costs, and to just get things done.
34 WHAT I BELIEVE ROD MARTIN
Having 6500K LED lights with a creamy wall… it just doesn’t look right”
WHAT I BELIEVE 35
Rod Martin Senior building manager, Waterfront Place, Brisbane, Australia I run a premium-grade building I’m the senior building manager at the Waterfront Place, one of Brisbane’s most desirable business addresses. There are 36 tenanted ﬂoors in the building, 40 ﬂoors overall and two basementlevel car parks – that makes 60,000 square metres. It’s classiﬁed as a premium-grade building and there are only four buildings in Brisbane CBD that meet that criterion. Waterfront place just turned 24 years old and we’ve been spending close to AU$14 million (US$10.6 million) over the past four years on enhancing the building and keeping it to the level that is expected. That comes through lifts and air conditioning and – the most obvious one to people – lighting. Our new LEDs were too bright We’ve changed our ﬁttings and incorporated LED lighting through the hallways. We chose some big panels but they were too bright, so we ended up putting little dimmer units on them just to bring them down a bit. You were coming from this really bright area into a darker hall, and we wanted more uniformity. We’ve used these panels for over 18 months now and we haven’t had any problems with lumen depreciation – it’s been quite consistent. We’re not just saving energy In the lobby, we used to have 10 42W recessed compact ﬂuorescent lights. We purchased some ﬂat LED panels to replace them like for like, and we found that 10 in that space was too much, so we dropped it down to six. So we’re reducing energy consumption ﬁrst by using LEDs, and second by reducing the number of ﬁttings. And we get this really good look and feel, so we’re working our way through the building with that. LEDs look better in white We changed the original wall colour that we used in the space to a whiter rather than a creamy colour so you get a better overall effect. Having 6500K LED lights with a creamy wall… it just doesn’t look
Waterfront Place is an ofﬁce building in Brisbane’s central business district. It is home to some of Australia’s most inﬂuential private and government bodies. The management of Waterfront Place has spent nearly $14 million (US$10.6 million) over the past four years on making the building more energy efﬁcient. One of the objectives was to get an
right. So we whitened up the wall colour and it just lifts the whole space and makes it look modern. Energy efﬁciency sells The Thorn ﬁtting in our tenanted space is now the standard ﬁtting that we offer all our tenants. We’re the ﬁrst building in Brisbane to offer that. It was a like-for-like swap with the three-tube 14W T5 ﬁttings that had been there before. There is an app on our website that potential tenants can use to look at the energy consumption and the operating cost. The threetube 14W ﬂuorescent ﬁttings that we used to have had replaced a T8 ﬁtting, which was calculated at AUS$28,000 (US$21,000) a year. The T5 was just over AU$15,000 and the LED that we’re now offering is down to AU$9,000 a year, so there is a signiﬁcant improvement, and that means we’ve got an excellent product that we can sell to potential tenants. They pay for their own electricity, so they get the beneﬁt of that. It’s a great marketing opportunity for us that we use when trying to lease space. A brighter environment is a safer environment In the basement we’ve got 200 lockers, storage for 200 bicycles, 20 showers and various facilities for the tenants to use at the end of their ride. We used to have CFL recessed downlights down there and we’ve replaced those with LED panels. Again it’s reduced energy use and really enhanced the light levels. It’s a brighter, more welcoming area and it gives a feeling of security to the people who are walking through that space – after all, it’s down at basement level and it leads out to the car park. Upgrading pays off I’ve been here for three years and during that time we’ve maintained a 4.5-star Nabers rating for environmental performance. Although we’ve had a few vacancies in the building, we’ve still been able to maintain the rating by conserving energy. It’s been a win-win-win for us.
energy-efﬁciency rating of ‘excellent’ to obtain a Building Energy Efﬁciency Certiﬁcate (BEEC), which has now been achieved. Light levels have increased from 320 to 372 lx, and energy consumption has been cut by 33 per cent, from around 8.7 to 5.7W/m2. The upgrade is expected to pay for itself in two and a half years.
ERCO has reconsidered office lighting. The Skim downlight oval flood with LED replaces two conventional luminaires. With its elongated light distribution, the oval flood lens system enables energyefficient and better lighting of circulation zones and workplaces in the office. Perfect light efficiently calculated. www.erco.com/skim
SEVEN PLACES controls can help you out 1
MEETING ROOMS How often do the meeting rooms at your ofﬁce get used? Half the time? Less? And how scrupulous are staff about turning the lights off? This is a key area for lighting controls. You can use occupancy sensors and, if necessary, daylight sensors to make sure there’s only light when we need it. If you want to give your staff a bit more control over the light levels, you can let them override the daylight dimming and switch the lights on – then set them to turn off automatically after the room’s been empty for a few minutes.
Microsoft’s offices in Stockholm use Dali drivers from Harvard to enable control
Men’s loos at the Edinburgh International Conference Centre, with lighting by BDP
This is another obvious case for controls. Especially because, if a light gets left on in a toilet, no-one’s going to see it from outside to turn it off. A simple PIR sensor will ensure that the lights are only on when there’s someone actually there. But make sure you allow a generous time before turning the lights off, so you don’t plunge people into darkness mid-bowel movement.
Here, daylight and occupancy sensors can be used. One thing to bear in mind when using controls in areas like this is that people don’t tend to like having to step into a darkened area and wait for the lights to come on. So think carefully about where you position your sensors so the lights come on ahead of the person. You’ll make your building’s occupants safer and more comfortable.
BY THE WINDOWS By zoning your luminaires into groups you can dim just the ones that are near the windows, and leave the people at the other end of the ofﬁce with full artiﬁcial light. Multiple sensors will tell you exactly how much light is in a particular spot, or you can use fewer sensors and alter the dimming patterns of the luminaires according to how far they are from the window.
Daylight design by Arup ensures plenty of light in this building on London’s BSkyB campus
The boardroom at Ascot Underwriting in the City of London, with lighting designed by Paul Nulty
7 6 CLUSTERS OF DESKS Take a look at your ofﬁce and think about which areas people just sit in and work, and which areas are for circulation. Now you can zone your lights so these areas are treated differently. For instance, if you want to leave lights on for the beneﬁt of security at night, or for the last person leaving the building, light the circulation areas and leave the desk clusters off.
If you’ve got a room that you use for meetings, presentations, or other events, you’ll probably be wanting a choice of ‘scenes’ to make sure the lighting suits what’s going on. If people are scrutinising the accounts, put light on the table. If they’re watching a presentation, dim the lights cinema-style to focus them on the projection. If they’re watching a speaker, dim the lights and light the speaker. If you’re hosting an evening event, perhaps some kind of atmospheric scene with dimmer, warmer lighting would be nice. But don’t overcomplicate things – too many options only increases the risk that the person using the system will pick one that’s not appropriate. Think too about how you describe them in the names of the scenes. Or you can use images or diagrams, like Hoare Lea did at its ofﬁces.
BY THE DOOR A ‘last man out’ switch is one way to make sure your lights don’t get left on needlessly when there’s nobody there. Night night.
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