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Solar Energy

Solar energy is a very useful resource. Today 80% of the energy we use comes from fossil fuels and about 1% comes from solar energy. Fossil fuels are nonrenewable, that means that they are used up faster than they could be replaced. Also fossil fuels limited and cause pollution. They are the primary cause for air pollution that causes acid rain and global warming. The good thing about solar energy is that it is renewable because it is always replaced. Also solar energy does not pollute the enviornment. There are four ways to use solar energy: passive solar heating systems, active solar heating systems, solar thermal power plants, and solar cells. Solar cells convert the sunlight into electricity. In my experiments, I would be answering these questions. How can you maximize the use of solar cells? At what angle should the solar cell be put for the best collection? How do weather conditions affect the collection of the solar cell? Does temperature affect the solar cell? I think the solar cell should be angled toward the sun for the best use of it. Also I think the weather affects the solar cell by causing the sun to not directly hit the solar cell. Finally, I think the temperature does not affect the solar cell.


Hopefully in the future, more things would use solar energy. If this happens, then the environment would be much cleaner and our air would not be as polluted. Automobiles in the future will probably run on solar energy, and houses will have solar heaters.

There are different types of solar cells. There is the single crystal, multicrystalline, and amorphous. The single crystal is the oldest but most expensive way, but it is the best way to convert sunlight into electricity. A pure single-crystal silicon is grown in an oven, then sliced into wafers, doped, and assembled. The silicon crystals are blue because they absorb all other colors, and single crystalline cells look like deep blue glass. In the multicrystaline way, the loafs are sliced into wafers off a large block of multicrystalline silicon. This way is lower in conversion of solar energy than the single crystal one. But this way the manufacturing costs less. Crystals measure a centimeter and the multicrystal patterns can be seen in the cell's deep blueness. The assembly is like the single crystal. In the amorphous way, the silicon is vaporized and deposited on glass or stainless steel. This way costs less than all the other ones but it is also the least efficient. The early methods made a product that lost up to 50% in output over the first few years. Technology has really reduced power fading to 10% to 15%. These cells are black in color. Unlike the other ways, if glass is used on the amorphous model it is not tempered, so breakage is more of a problem. Tempered glass can't be used with the high-temperature. This way is used as marine or RV modules.

Since the movement of hot and cold air causes wind, wind energy can be a branch of solar energy. The same goes with tidal energy. And since the sun plays an important part in the water cycle, hydroelectric energy can be attributed to solar energy. Solar Energy has a very good chance in becoming a main source of energy in the future. Solar energy generators are very clean; little waste comes from the generators into the environment.

In conclusion, I think the solar cell should be angled toward the sun for the best use of it. Also I think the weather affects the solar cell by causing the sun to not directly hit the solar cell, and I think the temperature does not affect the solar cell. Solar energy is a good way to go in the future. If everyone would be using solar energy, a lot of our environmental problems would be solved. No more using nonrenewable fossil fuels that pollute the environment. We would be using the renewable resource that is environment safe. People wou

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Approximate Word count = 1752
Approximate Pages = 7 (250 words per page double spaced)


  

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