Twilight Joburg.
Subtraction adds value.
Payback
24 months
Energy costs
-77%
Maintenance
costs
-80%
Decorative mercury installations (before):
• Lighting pollution and energy waste: light is dispersed
downwards with low efficiency of light source
• Poor chromatic quality
• Poor installation efficacy
• From 2015 to 2017: mercury lamps are banned in compliance with
EC245/2009 and EC347/2010
Installations with Twilight Joburg (after):
• Less lighting pollution and more energy saving; light is
concentrated downwards with high efficiency of light source
• High chromatic quality
• High installation efficacy
• Minimal aesthetic impact
For 50 luminaires
32 W*
Energy consumption
Symmetrical optic 6400 kW/h
Relamping and/or
cleaning costs
Only external cleaning
For 50 luminaires
144 W*
Energy consumption (per year) 28800 kW/h
Relamping and/or
cleaning costs
Light source + cleaning cost
Joburg elliptical
Ø 323 mm
2190lm / 3530 lm
20 W / 31 W
d = 2 (L/h)
h = 2,5 m (Installation height)
L = 5 m (Width of illuminated area)
d = 2 (L/h)
h = 2,5 m (Installation height)
L = 5 m (Width of illuminated area)
General features
Joburg symmetrical
Ø 323 mm
2190 lm / 3530 lm
20 W / 31 W
h
L
h
L
A compact, discreet cone used to replace the technology
of existing luminaires equipped with traditional sources,
in residential and urban areas at a very low cost.
It totally renews the concept of the luminaire itself and its
contextualization. The aesthetic impact is halved, optics
are dimensioned, light is conveyed downwards,
the efficiency of light source and luminaire is multiplied,
and the chromatic quality of the emitted light is improved.
An example of saving that delivers a real gain in liveability
and sustainability. This is Twilight Joburg: a simple but
brilliant opportunity for an aesthetic and energy upgrade
with a highly competitive payback.
Twilight
Mercury
* The value refers to the actual product power.
-1 m
37 lux
23 lux
14 lux
7lux
3 lux
1 m
2 m
3 m
4 m
5 m
-1 m
46 lux
31 lux
19 lux
11 lux
7 lux
1 m
2 m
3 m
4 m
5 m
17
