What is it about?
Due to the increasing energy costs and the objectives of the climate conferences, it is necessary for local authorities the change the public lighting to more energy saving alternatives. The most promising technology to achieving this goal is the LED technology – 80% energy savings are possible (depending on the previously used light bulbs).
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Why is it important?
The project AUBELE was performed in order to develop such an energy-efficient lighting for bus stops. The reason for this development is the following: In rural areas, bus stops are often located outside of villages and relatively far away from the nearest cable route. Especially in the winter months this is a disadvantage, in the morning and evening hours no natural lighting is available - in particular, reference is made to school children who are dependent on the bus.
Perspectives
To supply such far-flung lightings with electrical power (wired), enormously expensive shaft and cable laying work is needed. For this reason, the idea of an autonomous energy supply was born. Calculations have shown that an autonomous energy supply can not realized only with photovoltaic systems, because of the shadow of trees and other vegetable. For this reason, a triple-hybrid power supply system has been developed based on a small fuel cell system, a battery and an optional, complementary photovoltaic system. Since the fuel cell can be powered by hydrogen, which is made from renewable energy providers available, a completely CO2-neutral operation is possible. For maximum energy savings combined with a minimization of the hydrogen consumption, the overall efficiency of the system is of crucial importance. A key task of the project team was therefore in addition to the development of energy supply in the conception of a possible energy-efficient LED lighting.
Professor Ulrich H. P. Fischer
Hochschule Harz - Hochschule fur angewandte Wissenschaften
Read the Original
This page is a summary of: AUBELE - self-sufficient LED street light powered by fuel cells, January 2012, Optical Society of America (OSA),
DOI: 10.1364/soled.2012.lt4b.4.
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