Final Report Lot 9: Public street lighting - Amper

4.3 Use phase (product)
In this section, an overview is included of the calculation of the annual resources consumption
and the direct emissions related to the defined performance parameters in chapter 1 and 3 under
standard and non-standard conditions. This section also includes a representative overview of
the performance parameters found for products on the market anno 2006. In chapter 6 dedicated
to the Best Available Technology (BAT) and Best Not Yet Available Technology (BNAT)
upcoming products are considered with more improved performance parameters but with a high
actual price and/or a low actual trade volume or products that are only in the R&D phase. Also
'light pollution' is introduced in this section as an important factor related to the products direct
emissions.
4.3.1 Rated annual resources consumption (energy, lamps) and direct emissions (light
pollution) during product life according to the test standards defined in chapter 1
4.3.1.1 Formulas related to energy consumption
The annual energy consumption of a luminaire and lamp in standard conditions is
straightforward and related to the lamp power, control gear losses and burning hours per year.
The power consumption (P) per luminaire can be calculated from the equipment performance
parameters defined in chapter 1:
P [W] = Plamp/ ηballast
Where,
• Plamp and ηballast are defined in chapter 1.
The annual energy consumption (Ey) per product can be calculated:
Ey [kWh] = Plamp/( ηballast) x h
Where,
• h = burning hours per year (as discussed in chapter 3)
The functional unit (FU) as defined in chapter 1 can be calculated from the lamp, ballast and
luminaire performance parameters as defined in chapter 1 following the definition of these
parameters:
FU [lumen] = UF x LMF x LLMF x Lamp Lumen Output
By definition 1 lux equals 1 lumen per m² and therefore the following relationship exists with
road illuminance performance requirements as discussed in chapter 1:
E [lx] = FU / A
Where,
• A is street area surface [m²] by multiplying street width with average distance between
light points. Street width includes also pedestrian and cyclists area (if any). Average
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