RENEWABLE ENERGY

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  • RENEWABLE ENERGY
    • BIOMASS
      • How it works. Burning biomass releases chemical energy. It can be converted into gass
      • Advs. It is cheap and available. Friendly alternate to fossil fuels. Crops absorb CO2.
      • Potential. Appropriate for LEDC's. Global use has increased 40%. But depends on land availability.
      • Disadvs. Deforestation can occur. Only renewable if crops are replanted. Biomass waste can be a hazard.
    • WIND
      • Advs. Renwable. Takes up less space. Appropriate.
      • How it works. Wind turns blade. Rotational energy becomes electrical energy.
      • Disadvs. Unreliable. Produces little energy. Noisy.
      • Potential. UK - strong winds. Could prove 20% by 2030.
    • WAVE
      • Adv. Renewable. No damage to land.Widely available.
      • How it works. Harnessed by a wave generator that contains a turbine.
      • Disadv. Not reliable. Expensive.
      • Potential. Department of Energy and Climate change - 20% UK's electrical needs.
    • TIDAL
      • Advs. Reliable.Renewable. No emissions.
      • How it works. Turbines underwater across tidal zones.
      • Disadvs. Expensive. Environmental damage to ecosystems.Can be damaged.
      • Potential. More predictable that wind and solar. Developing.
    • SOLAR
      • Advs. No pollution. Cost effective. Long lasting.
      • Potential. Sun hitting 1 mile equivalent to 4 million barrels of oil.
      • How it works. PV cell converts light into electrical currents.
      • Disadvs. Expensive. Do not work at night or when cloudy

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