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solar energy

Carol / 2013-04-29
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Solar Energy The traditional fossil fuels such as coal and oil are composed of much more complex molecules, with a higher carbon ratio and higher nitrogen and sulfur contents. This means that when combusted, coal and oil release higher levels of harmful emissions, including a higher ratio of carbon emissions, nitrogen oxides (NOx), and sulfur dioxide (SO2). Coal and fuel oil also release ash particles into the environment, substances that do not burn but instead are carried into the atmosphere and contribute to pollution. The use of fossil fuels for energy contributes to a number of environmental problems, like greenhouse effect, acid rain, smog ect.. These are becoming pressing environmental problems, particularly for large metropolitan cities. New, clean and un-polluted energy is badly needed.

             Here comes the solar energy which is a clean, renewable source of energy produced by the sun. Devices like solar cells are harnessed by solar collection methods and used to take light energy as input and convert it into usable energy such as electricity.
Energy from the sun is abundant and solar power systems installed in the areas defined by the dark disks could meet the world's current total energy demand. But we are not making good use of it!

How it Works?
When light hitsyour PV panels, energy is transferred to electrons in the carefully engineeredmaterials. When these electrons move they create an electrical current. Thecurrent is converted to useful electricity in the DC to AC inverter. The energycan now be used in your house or sent back to the electric grid.

 

User Comment

christian: give point ( 2013-10-31 17:12:12 )
learns a lot
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