Final Report Lot 9: Public street lighting - Amper

5.1 BaseCase Lamps and ballasts
5.1.1 Product-specific Inputs
In chapter 4, the product-specific inputs are listed regarding the Bill of Materials (BOM),
packaging volume and waste scenario for all these lamps and ballasts.
Unit cost data for lamps and ballasts are retrieved from limited market survey and are shown in
section 2.4.1. However, at part-level, no Total Life Cycle Cost is calculated, only at
product-level in section 5.3 (LCC) and 5.4 (annual expenditure due to stock).
Category F
In road category F (fast traffic), almost uniquely sodium lamps are used. The literature and
expert inquiry has pointed out that typical wattages used for fast traffic motorways are usually
150W, 250W HPS and 131W, 135W and 180W LPS. The only EU-countries with still
substantial shares of LPS luminaires in category F, in the installed base, are: Belgium, Holland,
Sweden, U.K. and Ireland. The trend is that these are being replaced by HPS (new luminaire
sales). For the BaseCase calculation we assume for the existing stock of luminaires 2005 a
weighted ratio of 85% HPS and 15% LPS luminaires, with most representative wattages 250W
and 131W respectively. For replacement sales, luminaires are replaced with luminaires of the
same type. For new project sales we assume no longer LPS sales (thus 100% HPS). These
ratios are based on generic market data and expert assumptions since no other detailed reliable
market data are available (see chapter 2). The table below gives an overview of the input data
for luminaire types, category F.
Note that at installation level, more 131W LPS luminaires are required per km as compared to
250W HPS luminaires to achieve similar minimum luminance levels (between 0,75 and 2
cd/m2 for road category F). For 131W LPS lamps this means a typical luminaire distance of
30-40m, while for 250W HPS lamps this is 45-50m.
As according to the technical analysis on lamps (see section 4.3.1.4), an 131W LPS lamp has an
efficiency (ηlamp) of 198 lm/W while a 250W HPS has an average ηlamp of 123 lm/W. In the
BaseCase, these lamps are accompanied with electromagnetic ballasts, with efficiencies of 91%
for HPS and 87% for LPS.
Table 72: Luminaire types in category F
Luminaire types, CAT F Stock
Sales,
New project
Sales,
Replacement
Sales,
Total
With Mercury lamp 0% 0% 0% 0%
With Sodium lamp 100% 100% (100% HPS) 100% (85% 100%
HPS; 15% (95,5% HPS;
LPS) 4,5% LPS)
With Metal Halide lamp 0% 0% 0% 0%
With CFL 0% 0% 0% 0%
Total 100% 100% 100% 100%
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