Thursday, August 19, 2010

ALTERNATIVES TO PETROLEUM

1. SOLAR CELLS
Solar cells are manufactured primarily in Japan, Germany, USA, and China, though numerous other nations have or are acquiring significant solar cell production capacity.
While technologies are constantly evolving toward higher efficiencies, the most effective cells for low cost electrical production are not necessarily those with the highest efficiency, but those with a balance between low-cost production and efficiency high enough to minimize area-related balance of systems cost.

2. GEOTHERMAL POWER
Geothermal power is energy generated by heat stored beneath the Earth's surface or the collection of absorbed heat in the atmosphere and oceans. The largest group of geothermal power plants in the world is located in California. As of 2007, geothermal power supplies less than 1% of the world's energy.

3, MARINE ENERGY
The development of the first subsea commercial wave farm by a Scottish company took another important step to develop and commercialise AWS’ Archimedes Wave Swing, one of the few proven technologies worldwide for generating clean, renewable electricity from the ocean’s waves. Scotland as a world leader in marine energy.

4. HYDRO ELECTRIC POWER
About 20 per cent of the world’s electricity is generated through the use of water. Today’s hydro electric power station has a simpler design than a conventional coal-fired station.
Basically, the hydro-electric plant consists of a water turbine which converts the energy from flowing water into mechanical energy. Then, An electric generator converts this mechanical energy into electrical energy.

5. NUCLEAR POWER
Nuclear power is any nuclear technology designed to extract usable energy from atomic nuclei via controlled nuclear reactions. All current methods involve heating a working fluid such as water, which is then converted
into mechanical works for the purpose of generating electricity or propulsion. Today, more than 15% of the world's electricity comes from nuclear power, over 150 nuclear-powered naval vessels have been built, and a few radioisotope power have been produced.

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