Lighting Low carbon
Compact fluorescent bulbs
Timetable
are low-energy products that
are being widely used
Incandescent
bulb phase out
Shutterstock
by country
At a glance: new and
About 95 per cent of the energy
Approved
emerging technologies
USA 2012-2014
needed to power a traditional California 2011-2013
Compact fluorescent integrated
filament bulb is lost through
Nevada 2011-2013
l Electronic HF output at 30 to 50KHz
l Constant, flicker-free, non-stroboscopic light heat, leaving a mere 5 per cent to
EU 27 2009-2012
Switzerland 2009-2011
l UV safe
generate light. – Brian Jacob Australia 2008-2010
l Warm up 60 per cent in 60 seconds
New Zealand 2009-
l Not affected by switching
> another level on the surrounding areas.” Users also
2011
l Dimming available
like the control that task lighting provides.
Cuba 2005
l Good colour rendering Ra 80
According to Mardaljevic, a successful daylight
Colombia 2011
Tungsten halogen
design is an elusive optimum that depends on a
Announced
l Mains or low voltage
number of factors, including the design of the building;
Canada 2012-2014
l Excellent colour rendering
its aspect; the surrounding context; and the prevailing
Ireland 2009-2012
l 30 to 50 per cent energy-saving GLS equivalents
climate. For him, the answer partly lies in the need
Tiawan 2008-2012
l Life two to three times longer than GLS equivalents
for new targets founded on more realistic measures
Turkey 2009-2012
l Dimmable
of illumination. These measures are predicted using
Malaysia 2012
l Clear or ivory finish
a technique that he has named climate-based daylight
Thailand 2012
l Choice of lamp caps
modelling (CBDM). A full year’s climate data is used
Phillipines 2012
LEDs in the evaluation, rather than utilising a selection
Japan 2012
l Good colour rendering Ra 80 (cool Ra 70) or filtering parts out. More work also needs to be
Korea 2013
l Warm white available 3,100K conducted into CBDM, including identifying key areas
Sri Lanka 2008
l Very long life (20 years domestically) of core or supporting research, and providing guidance
Brazil 2013
l Dimmable on the application. He also believes that useful daylight
Argentina 2013
l High energy savings of 83 per cent GLS equivalent illuminance (UDI), a relatively new metric for assessing
l Choice of lamp caps interior daylight, could be a promising candidate for
Under Discussion
a design target to replace the half-century old daylight
Spain
OLEDs
factor. But there are issues here too that need to be
China
l Large area source
addressed.
Singapore
l Flat and thin
Loe concludes that more lengthy research needs to
Pacific Islands
l Broadband emission from all angles
be conducted by the industry itself, with collaboration
Mexico
l Dimmable
from academia, spanning a year, rather than just a
Chile
l Good colour rendering Ra 80+
day or an hour, to gain a better insight into the “good
Venezuela
l Flexible substrates for future
lighting with less energy” requirement. l
South Africa
48 CIBSE Journal September 2009 www.cibsejournal.com
CIBSEsep09 pp44-46,48 lighting.indd 48 21/8/09 14:22:42
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