Plurio - Thorn

Sustainability
Plurio in action: fast payback – and better lighting too
Up to 72.5% energy savings!
Sustainability
Electric lighting in urban areas has a major impact on sustainability.
The key to sustainability in lighting is eco-design, efficient operation
and planned recycling at the end of the product life.
Renovation project
Eco-design
Thorn employs life cycle assessments, as per the Energy-using Products
Directive (EuP), to check the environmental impact of its products
through life. This ensures that care is taken during design to employ,
absolutely, the minimum amount of restricted hazardous substances –
Plurio complies with the RoHS Directive – and that the minimum amount
of virgin materials, water and energy are used during manufacture.
Finally, Plurio’s light distribution is designed to reduce obtrusive light
and sky glow according to CIE 150 recommendations.
Efficient operation
The generation of electrical energy required for lighting is a major
contributor to CO 2
emissions. For every kWh of energy 0.42 kg of CO 2
is liberated and added to the ‘greenhouse’ gases in the atmosphere,
increasing global warming.
The most energy consumption by the product is clearly during
operation, which can be influenced by prudent design and component
selection. For Plurio the key elements are high performance optics
employing modern light sources (no mercury types), electronic gear,
power reduction dimming devices and the option of mini photocells
(with 76mm versions).
With efficient products, correct lighting scheme design and the use
of control systems substantial energy saving can be made without
jeopardising the quality of the required lighting condition.
Existing
Opal Sphere 125W HME
(6500 lm)
ULOR 46% DLOR 40%
Illuminance on ground (ln lux)
ln lux
6
3
0
3
9
4.5
6
9
6
3
0
3
6
6 3 0 3 6 9 6 3 0 3 6
Sphere 125W
New Proposal
Plurio Facetted reflector
ULOR 1% DLOR 69%
Illuminance on ground (ln lux)
20
1510
ln lux
6
3
0
6
3
5
9
6
3
0
3
6
6 3 0 3 6 9 6 3 0 3 6
Plurio 70W
Recycling
Plurio has a high aluminium content and is designed for disassembly
and dematerialisation and, as with all Thorn products, meets the
obligations of the WEEE waste directive.
Type of application: Open pedestrian area (e.g piazza) – refurbishment.
Existing opal sphere replaced by Plurio with facetted optic.
Spacings: 18m.
Height of light source: 4m.
Maintenance factor at installation =1.
Sky glow contribution factor
(UFR = UpwardFlux Ratio) S2 (10 lux avgrequirements):
• No light: UFR = 0
• ‘Ideal’luminaire: UFR = 1
• Plurio: UFR = 1.8
• Globe: UFR = 18
For the same lighting level on the ground, the opal bowl scatters
10 times more light into the sky than Plurio (calculation takes into
account the light directly emitted by the luminaire and also reflected
on the ground with global reflection factor of 0.15). With an ULOR
0% accessory the upward flux for Plurio would be 0%.
Lamp
Flux
(lm)
Eav
(lux)
Emin
(lux)
Sphere Opal MBF125W 6600 6.5 2.5
Energy
Saving
Plurio facetted ref TC 57W 4300 9.4 2.6 54%
Plurio facetted ref HSE 70W 5900 12.4 4.2 44%
Plurio facetted ref HSE 50W 3500 7.3 2.5 60%
Proposal 1: Plurio 57W TC-TEL
Plurio 57W TC-TEL provides 45% more light on average than Sphere
125W HME while consuming 54% less energy.
Proposal 2: Plurio 70W HSE (5900 lm) with power
reduction to 50W
When more light is required at the beginning of the night, Plurio 70W
HSE lights twice as much as the Sphere125W HME, while saving 44%
energy.
When less light is required later in the night, the bi powered option
will allow you to switch to 50W, achieving then an equivalent level of
illuminance as before while saving 60% energy consumption!
Compared with other basic decorative lanterns with louvre for example,
you would need to use at least a100W discharge lamp to match the
level of illuminance given by the Plurio with a 70W lamp.
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