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Renewable Energy

Renewable Energy. By Seb. Hollington, Liuhao Wu & Mark Varley. Contents. Definitions Advantages and Disadvantages of Renewable Energy Renewable Energies Geothermal Wind Tidal Hydro-electricity Biomass Solar Websites/Bibliography Credits. Definitions.

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Renewable Energy

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  1. Renewable Energy By Seb. Hollington, Liuhao Wu &Mark Varley

  2. Contents Definitions Advantages and Disadvantages of Renewable Energy Renewable Energies Geothermal Wind Tidal Hydro-electricity Biomass Solar Websites/Bibliography Credits Sebastian Hollington, Liuhao Wu, Mark Varley

  3. Definitions • Non-renewable fuels are fuels that cannot be easily made or renewed. Examples are: • Oil • Natural Gas • Coal • Renewable energy resourcesare naturally occurring andare virtually inexhaustible.However they are limitedto the amount of energyavailable at the time. Sebastian Hollington, Liuhao Wu, Mark Varley

  4. Pros/Cons of Renewable Energy Sebastian Hollington, Liuhao Wu, Mark Varley

  5. List of Renewable Energies Sebastian Hollington, Liuhao Wu, Mark Varley

  6. Geothermal Energy • The core of the Earth is around 6000°C! • That is hot enough to melt rocks!!! • You can produce electricity from this heat by drilling holes many kilometres into the ground. • Water is poured down one hole. • The water is heated near thecore until it turns into steam. • This steam is then drivenup another hole whichdrives a turbine. Sebastian Hollington, Liuhao Wu, Mark Varley

  7. Geothermal Energy • The steam is forced through aturbine generator. • The force of the steam turnsthe blades and coiled wire. • Electricity is produced!!! Sebastian Hollington, Liuhao Wu, Mark Varley

  8. Wind Power • Air can be used to produce electricity. • When air is warmed up by the sun, it rises, leaving a gap underneath. • Air around this gap rushes into the vacuum and we call this movement wind. • You can use Wind Turbineswith giant blades to catchthe wind. • The wind makes them turnaround. Sebastian Hollington, Liuhao Wu, Mark Varley

  9. Wind Power Wind turns the propeller blades which drives the turbines and the generatorbehind it. This source of energy is notavailable all the time. They cost a lot to make though. Sebastian Hollington, Liuhao Wu, Mark Varley

  10. Tidal Power Tidal Power harnesses the energy from the sea’s tide. Originating from the gravitational pull of the moon. The tide rushes into an estuary when the tide is in. When the tide rushes back outit drives a turbine. This source of energy is80% efficient. Sebastian Hollington, Liuhao Wu, Mark Varley

  11. Tidal Power The wave rushes through the pipe forcing the turbine. This form of energy canproduce variable amounts, One example is 150KW pergenerator. Sebastian Hollington, Liuhao Wu, Mark Varley

  12. Biomass • Biomass is any matter from any organism. • You can burn dead plant biomass like wood and plants. • Although you are using up that piece of biomass, you can always plant somemore trees and they will neverbe used up. • This source is cheap thoughit still produces smoke and pollution. Sebastian Hollington, Liuhao Wu, Mark Varley

  13. Biomass • The biomass is burnt and the heatenergy produced is used to heatup water to produce steam. • This steam is forced througha turbine which drives agenerator to produceelectricity. Sebastian Hollington, Liuhao Wu, Mark Varley

  14. Hydroelectricity • Hydroelectricity is a way of capturing the energy gravity has on water. • A hydro-electric plant consists of a high reservoir and a low reservoir. • A dam is usually built to keep thewater in the top reservoir there. • The building of the dam costsa lot meaning a high initialinvestment. • However, running costs areminimal. Sebastian Hollington, Liuhao Wu, Mark Varley

  15. Hydroelectricity The 2 reservoirs are connected with a pipe. When the pipe is opened,water is forced down it bygravity which turns aturbine in the pipe. The turbine drives agenerator. Sebastian Hollington, Liuhao Wu, Mark Varley

  16. Solar Power • The sun can be used directly to produce the energy for electricity. • It is used commonly to power small objects like calculators. • To harness the energy on a large scale,you need Solar Panels. • These are made from siliconsolar cells. • They 1st were made in 1973. Sebastian Hollington, Liuhao Wu, Mark Varley

  17. Solar Power Light hits the solar cell and the silicon absorbs it. It releases electrons whichflow as an electrical charge. However, it’s unreliable. Sebastian Hollington, Liuhao Wu, Mark Varley

  18. Websites/Bibliography • http://www.darvill.clara.net/altenerg/ • http://www.worldhistory.com/wiki/h/Hydroelectricity.htm • http://encarta.msn.com/ • Geography in Focus TextBook Sebastian Hollington, Liuhao Wu, Mark Varley

  19. Credits Produced By Seb. Hollington Mark Varley Liuhao Wu Narrated By Mark Varley Sebastian Hollington, Liuhao Wu, Mark Varley

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