Alternative energy


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Alternative energy

  1. 1. Alternative Energy
  2. 2. Different types of Alternative Energy (Fuel) Sources • Wind Power Wind energy harnesses the power of the wind to propel the blades of wind turbines. The rotation of turbine blades is converted into electrical current by means of an electrical generator.
  3. 3. Different types of Alternative Energy (Fuel) Sources • Solar Power Solar energy is used commonly for heating, cooking, the production of electricity, and even in the desalination of seawater. solar power works by trapping the sun's rays into solar cells where this sunlight is then converted into electricity. Additionally, solar power uses sunlight that hits solar thermal panels to convert sunlight to heat water or air.
  4. 4. Different types of Alternative Energy (Fuel) Sources • Geothermal Energy Literally, geothermal means, "earth heat." Geothermal energy harnesses the heat energy present underneath the Earth. Hot rocks under the ground heat water to produce steam. When holes are drilled in the region, the steam that shoots up is purified and is used to drive turbines, which power electric generators
  5. 5. Different types of Alternative Energy (Fuel) Sources • Ethanol (E85) • Ethanol, or grain alcohol, is produced by fermenting biomass, commonly corn (though other, lower-value feedstock's have been tested in an effort to reduce costs) It is thus inherently a renewable resource, and contributes nothing in itself to greenhouse-gas loading of the atmosphere
  6. 6. Different types of Alternative Energy (Fuel) Sources • HYDROELECTRIC POWER • Hydroelectric power is generated from dammed water that drives a water turbine and generator. Tidal power is one version of this. The power of the water of a tide creates pressure that will turn either a turbine or a water wheel. This power then is able to provide energy to the electric generator
  7. 7. Different types of Alternative Energy (Fuel) Sources • BIOFUELS • Biofuels are fuels that are made from animals or plants. They may include methane from animal waste, wood chippings, or wood. Today ethanol has been getting a lot of attention for its use in combination with gasoline for transportation use.
  8. 8. Different types of Alternative Energy (Fuel) Sources • NATURAL GAS • Natural gas is a fossil fuel. It does, however, have some differences. It does not produce carbon dioxide, which is the main greenhouse gas. This makes natural gas a better option. There is also still a rather large supply of natural gas in the world.
  9. 9. Different types of Alternative Energy (Fuel) Sources • HYDROGEN • Hydrogen so far has not proven to be a very profitable energy source since it takes more energy to manufacture than the hydrogen actually produces. It is, however, a very good fuel for the environment and has turned out to be a good energy source for vehicles.
  10. 10. Different types of Alternative Energy (Fuel) Sources • NUCLEAR ENERGY • Nuclear energy is energy created through atoms. By either splitting atoms (fission) or merging them (fusion), it creates energy from the reaction. Nuclear energy, while it does produce a large amount of power, has several other hazards. Nuclear energy creates dangerous nuclear waste which is difficult to deal with. It must be stored in a secure location until it can be properly dealt with.