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CS117 Fiches technique(PDF) 2 Page - Lumileds Lighting Company

No de pièce CS117
Description  Comfort Meets Sustainability at UK?셲 Ealing Hospital
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Fabricant  LUMILEDS [Lumileds Lighting Company]
Site Internet  http://www.luxeon.com
Logo LUMILEDS - Lumileds Lighting Company

CS117 Fiches technique(HTML) 2 Page - Lumileds Lighting Company

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CS117 Comfort Meets Sustainability at UK’s Ealing Hospital Case Study 20151118 ©2015 Lumileds Holding B.V. All rights reserved.
Solution
A selection of lighting fixtures, lighting controls and sensors
were chosen from Dextra plc’s Dextra Lighting, Dexeco and
Dexsor divisions to meet the needs of the hospital upgrade.
Dextra chose LEDs from Lumileds (San Jose, CA) because of
their ability to provide very high efficacy LEDs with high flux,
outstanding light quality and industry-leading reliability.
Dextra replaced the fixtures in the imperial ceiling with
bespoke recessed luminaires — a far less expensive approach
than replacing the entire suspended ceiling. The extensive
hospital upgrade included installation of 38 variations of
luminaires with different lumen outputs, optics, dimming/
sensor controls, and integral emergency packages. All
luminaires were specified at 4000K color temperature and
80 CRI, with the exception of the Opus 2, which is specified
at 4000K and 70 CRI. All of the luminaires were designed for
rapid installation and minimum interruption of work areas
using cable flex and click ceiling rose design.
In the wards, corridors, stairwells and cafeterias, custom
DEXLED recessed luminaires using LUXEON 3535L LEDs, with
imperial dimensions of 1220 x 610 mm and 610 x 610 mm,
were manufactured and installed. Due to the wide range of
lumen outputs achieved with the luminaires, fewer overall
fixtures were required than originally installed. The luminaire’s
low brightness louvers and opal polycarbonate diffusers
provided a more comfortable light for patients and staff.
LUXEON M, LUXEON 3030 2D, LUXEON T, LUXEON 3535L LEDs
In the hospital wards and elevator lobbies, custom MODLED
luminaires with LUXEON 3535L LEDs, also with imperial
dimensions, were installed in lay-in, pull-up and surface mount
configurations. The MODLED is compliant with BSEN 12464
glare limitations for visual comfort. Other luminaires used
throughout the hospital included the Graduate Surface LED
and Protec LED downlights, using Philips Fortimo DLM Flex
modules with LUXEON 3030 2D LEDs.
In the hospital’s loading bay and nursery, the IP65 rated
Avalon Wall Pack was chosen specifically for its long life and
durability in harsh and hard-to-access areas. These luminaires
utilize the Lumileds LUXEON T LEDs—high flux, high efficacy
emitters that provide over 200 lm at 100 lm/W each. These
areas also use the Dexeco ProLED luminaires powered by
LUXEON 3535L, which boast a luminaire efficacy of 91 lm/W at
constant lumen output.
Durability is also demanded of the Opus 2 LED floodlight,
which uses LUXEON M, Lumileds brightest, most uniform high
efficacy emitter. The fixture provides constant lumen output,
exceeds Energy Star lumen maintenance requirements, is IP65
rated and has a die-cast aluminum housing and toughened
glass covers.
For outdoor areas, the Amenity Plus LED luminaires with
LUXEON 3535L LEDs provide 1500 lm or 2000 lm with
light output ratios of 80%, matching the performance of
fluorescent sources at a fraction of the energy cost.
Benefits and Results
Ealing Hospital officials determined that the LED lighting
upgrade reduced energy use by approximately 50%. The
complete upgrade was performed in 12 months. Return on
investment is estimated to be reached in 5 years. All waste
products were disposed of in line with WEEE legislation.
The LED upgrade provided the hospital with the opportunity
to balance quality with cost-effectiveness. Rigorous
compliance to the UK’s current legislation and energy
efficiency and safety standards ensured that the new
installation would operate in alignment with the Trust’s
performance goals and environmental policies.


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