You have more than likely seen or used a calculator which uses solar energy and you would know just how useful they can be. There is no need for new batteries and they seem to work indefinitely, just as long as there is adequate light.
Perhaps you have also noticed the always increasing use of solar panels in bigger products, like emergency road signs, telephone boxes and light for car parking bays. More and more of these handy devices are being powered by the sun rather than using the more traditional forms of electricity.
The question is: how do they work?
The solution is photovoltaics. This technology has been around from the mid to late 1950s and was employed mainly in space, running the electric powered devices in satellites. Currently, the technology is utilised in more run of the mill applications. Some people are convinced that the potential of the sun will one day be harnessed to run efficient motor vehicles and that just about all of our power needs will be cost free.
PV panels, also known as solar photovoltaic panels, produce power through the conversion of solar radiation into direct current (dc) electricity using semiconductors. This direct current is what we gain access to through mains or grid power. An inverter is required to convert dc power to ac, which is the kind of electricity utilised for such purposes as boats, electric cars and roadside emergency telephones.
Each of these solar pv panels include a number of cells and these cells in turn contain photovoltaic material. The most commonly used materials are comprised of silicon. This material has to be protected from the elements: usually this means it is crammed snugly behind a sheet of glass. For situations needing a more substantial amount of power, the panels are joined in arrays.
In the last decade, the manufacture of solar pv panels has become more efficient, in response to a growing demand for renewable energy sources. Photovoltaic panels are making electricity in over 100 countries internationally; despite the fact that this power source is but a very small percentage of the worlds electricity production, it is the most rapidly growing technology of its sort .
These technological improvements have likewise resulted in pleasing information for the consumer : the level and excellence of production has increased, whilst the cost of photovoltaic panels has lowered. A win-win situation!
Governments in a lot of countries globally have additionally brought in rewards for purchasers for the installation of solar pv panels, including rebates and feed-in tariffs. Rural communities and villages no longer need to count upon the frequently exhorbitant price of connection to a grid when they use solar energy. This allows for telecommunications access to all areas of the world, both on land and at sea.
PV panels also help in making roads more safe, with the use of emergency and warning lights to advise people of road work or hazardous driving conditions. This in turn has the potential to save lives, using a cost effective means.
In developing countries, solar energy is a less expensive means by which most of the population is able to have access to electricity and as a consequence have an improved quality of life. It facilitates electrification of schools and community centres. When people have access to reliable energy, it can extend the time by which productive work can occur, enabling night time craft work to supplement other forms of income. In disaster circumstances, emergency medical relief squads can set up well equipped triage centres.
Photovoltaic panels have also been produced for recreational use: to power campsites for the traveller or to produce a reliable source of electricity for a computer when on the road.
As the non-renewable resources like coal and gas dwindle, it makes perfect sense to take advantage of the suns rays.
If you wish to read extra useful things about solar pv go to this website and youll find perfect review. This article is created and issued under serial No. MAR:ACT01.
Article source: http://solar-panel-power.org/photovoltaic-panels-solar-pv-panels