How Does Solar Power Work?
please help me i really need to know all these things for school
how does solar power work?
what are the advantages and disadvantages of it?
where in australia is it found
what is it used for?
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I don’t know that cost is a disadvantage. I keep reading that you can build solar panels yourself for less than $200. At that rate, you wouldn’t think the payback period would be very long. I haven’t done it myself though, so I guess I can’t say for sure.
Here’s one of the guides that promises step-by-step instructions for home solar power: http://www.homemadeenergy.ca. It’s a Canadian site, but I’m sure the plans would be applicable in Australia as well.
The solar cells that you see on calculators and satellites are photovoltaic cells or modules (modules are simply a group of cells electrically connected and packaged in one frame). Photovoltaics, as the word implies (photo = light, voltaic = electricity), convert sunlight directly into electricity. Once used almost exclusively in space, photovoltaics are used more and more in less exotic ways. They could even power your house. How do these devices work?
Photovoltaic (PV) cells are made of special materials called semiconductors such as silicon, which is currently the most commonly used. Basically, when light strikes the cell, a certain portion of it is absorbed within the semiconductor material. This means that the energy of the absorbed light is transferred to the semiconductor. The energy knocks electrons loose, allowing them to flow freely. PV cells also all have one or more electric fields that act to force electrons freed by light absorption to flow in a certain direction. This flow of electrons is a current, and by placing metal contacts on the top and bottom of the PV cell, we can draw that current off to use externally. For example, the current can power a calculator. This current, together with the cell’s voltage (which is a result of its built-in electric field or fields), defines the power (or wattage) that the solar cell can produce.
That’s the basic process, but there’s really much more to it. Let’s take a deeper look into one example of a PV cell: the single-crystal silicon cell. http://www.ask.com/bar?q=how+does+solar+…
check out these websites they will give you all the information you need:http://en.wikipedia.org/wiki/Solar_energ…http://www.re-energy.ca/http://www.infos247.com/solar-power/
well the only disadvantage is simple….cost solar panels are very pricey….and they don’t work at night or on very overcast days.