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lighting
The art
of lighting
The National Gallery in London is
looking forward to annual savings
of £90,000 after introducing energy
efficient LEDs and an intelligent
lighting control system that makes
maximum use of available daylight.
The LiGO lighting control system
supplied by Open Technology works in
conjunction with the Gallery’s building
management system and external roof
blinds that change position according
to the strength and angle of sunlight.
As the blinds adjust throughout the
day, Open Technology’s LiGO control
system automatically controls light
output to maintain specified light levels
while using as little energy as possible.
Steve Van Dyke, Head of Building
and Facilities at The National Gallery,
London, said: “With our previous
system, we could only switch on and
off, whereas the LiGO control system
has enabled us to progressively dim and
bring up the light in conjunction with
daylight levels.”
LiGO also adjusts light levels in
response to gallery opening times –
lighting is set to a default minimum
out of hours (with presence detection);
LED lighting and a new lighting control system
have cut The National Gallery’s annual lighting
bill by £90,000
rehangs, which require new light
settings; and security patrols out of
hours.
Energy savings are maximised
through the use of LED lighting, which
as well as being energy-efficient has
lower maintenance requirements than
other forms of lighting. Another of LED’s
benefits is that it produces no UV light,
which can be harmful to artworks.
Through these measures the National
Gallery expects to reduce annual
lighting-related energy consumption by
765,000 kWh or 85%, saving £53,600.
Reduced maintenance will contribute an
additional £36,000 in savings.
The successful project forms a major
part of the National Gallery’s carbon
management plan, which commits to
reducing carbon emissions by 43% by
2015.
Open Technology’s deployment of
LiGO in The National Gallery follows
similar installations in public buildings,
universities, hospitals and the transport
network, including Clapham Junction
station which is using it to cut lighting
costs by 35%.
Open Technology managing director
Chris Bedford said: “Energy efficiency
in the built environment is a key target
for both business and government.
More and more organisations are taking
advantage of the fact that lighting
control not only offers them significant
energy savings and carbon reductions,
but can also respond to the complex
and unique needs of their building to
create a better environment for staff
and visitors.”
Before & After
The problem:
l
Big waste of energy through inefficient lighting in galleries
l
On or off lighting with no adjustability
The solution:
l
LiGO energy lighting control system linked to building
management system and adjustable external roof blinds,
with the ability to adjust light levels depending on amount
of daylight, hour of the day etc.
l
Energy efficient LED bulbs producing no UV light, which can
be harmful to artworks
The benefit:
l
85% reduction in energy used for lighting
l
£53,600 saving in energy costs p.a.
l
£36,000 saving in lighting maintenance costs p.a.
l
reduced carbon footprint
Osram is warning UK SMEs that they could
be putting their employees’ health at risk
by failing to recycle light bulbs and fittings
correctly and has produced guidance (see
below) on what to do when fluorescent
lighting is damaged.
UK lamp recycling rates have reached an
all-time high of 52.8% thanks to a network of
2,433 commercial collection points for waste
fluorescent and LED lighting established under
the aegis of lighting industryWEEE compliance
scheme Recolight.
However, Osram and Recolight warn that
many businesses with smaller quantities
of lamp waste are still unaware that these
collection points exist and continue to put
bulbs in general purpose refuse bins.
Nigel Harvey, CEO of Recolight, said:
“Handling and disposing of waste lamps
inappropriately can expose employees to
hazardous waste like mercury, as well as
being illegal.With developments such as our
postcode-searching function, a collection point
is never more than 20 miles away for lamps to
be carefully recycled.”
Where fluorescent lamps are visibly broken,
Osram has provided the following guidelines
to help with safe disposal:
n
Make sure to disconnect the lamp or
luminaire from any electric power;
n
Open the windows and leave the room for
10 to 15 minutes;
n
Thoroughly sweep the surface to collect all
lamp parts;
n
After ventilation, gather the remaining small
pieces with a disposable cloth or adhesive
tape;
n
When using a vacuum cleaner (e. g. for
carpets) make sure to immediately remove
the bag;
n
Collect the lamp pieces in a sealed bag or
container and bring it to the next collection
point for waste lamps. If you have to store it
in the meantime, do so outdoors.
•
Handle with care
