Street lights glows all night, 365 days a year, and by the day they have “sunbathe”.
Because of this combination of night use interchangeably with daily exposure to sun light, they are ideal candidates for use of solar energy.
More companies who are manufacturers of lamps already offer the option of a street lamp powered by photovoltaic panels. But in the University of Seville, Spain, designed a street lamp that is powered with the use of not one but two renewable energy sources, in this case the sun and wind. It consists of two polycrystalline photovoltaic panels and wind turbine with vertical axis, built in galvanized steel pole.
Energy generated in solar panels and turbine is implemented through two 12 Volt batteries that can be lead acid or lithium-ion, placed in an underground room below the pole.
When photosensitive sensor detects nightfall, he turns on an array of LED lights with a total brightness of 3,520 lumens. Given that it is LED lights whose light output is easily configurable, street lamp can be programmed to shine with a different intensity or to turn off lights at certain times, depending on conditions and needs.
According to experts from the university system can withstand strong winds with speeds up to 140km / h, and works in temperatures from -30 to 40 ° C.
Unfortunately, due to the low temperature operating range, it is not suitable for use in much of the world, but the team says it will be their next challenge.
Although these street lights are provided to operate independently, outside the network, they can be associated with remote management system, and to be part of the city’s network where it would be powered if necessary. It is estimated that the lamp will have at least 50,000 hours service life.
The best is that, once the end of the lamp will come, 95% of its constituent parts can be recycled.