Street Lighting Power Reduction Potential In
Lithuanian Cities
Author(s)
R. Balsys, K. Otas, A. Mikulionis, V. J. Pakėnas, A. Vaškys,
P. Vitta & A. Žukauskas
Abstract
Purpose of this paper is to evaluate the current street lighting condition and
energy saving possibilities using new light emitting diode (LED) technologies in
the main cities of Lithuania. The power consumption evaluation model has been
used for comparison of current high-pressure sodium (HPS) lamp technology
and available LED technologies. The model enables to evaluate luminous flux
losses as well as electric power losses. The calculations have been carried out for
the largest Lithuanian cities and the following conclusions have been made. The
current HPS technology was implemented in towns about 10–15 years ago. Now
the life time of those luminaries is being expired. So the renovation of street
lighting systems would be necessary in the nearest future. It was determined that
the implementation of LED technologies (due to higher efficiency of LEDs,
smaller energy losses in luminaire optics, more effective distribution of luminous
flux and other advantages) enables to achieve electric power reduction by 20–
60%. This mostly depends on power of the HPS lamp to be replaced and the
quality of LED luminaires. The expedience of the current luminaire replacement
by LED luminaire depends on the street lighting condition characteristics such as
type and power of luminaire, maintenance duration and others. Most energy
efficient replacement by LED luminaires should be carried out in the narrow
residential streets where luminance levels exceed the requirements of standards
now.
Keywords: street lighting, power reduction, LED lighting.
Keywords
street lighting, power reduction, LED lighting.
Related Book
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