Unit 3: New Technologies and Energy

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  • New Technologies and Energy
    • Fossil Fuels
      • Gasification of coal underground - reaches deep, thin or fractured deposits
        • Able to create immediate and storable fuel
        • By-products can be used in other industries
        • Expensive
        • Releases more greenhouse gases e.g. methane
      • Secondary crude oil recovery (pumping natural gas)
      • Tertiary crude oil recovery (solvents, steam and detergent)
      • Fracking of natural gas and oil from shale rock by drilling and using a high-pressure water mixture
        • Releases carbon dioxide
        • Makes UK less dependant on other countries
        • Allows otherwise unexploited reserves to be reached
        • Cheaper gas and oil prices
        • Chemicals poison groundwater
        • High volume of water needed
        • Earthquakes and subsidence
        • Land-rights issues - drilling under private land
        • Distracts concerns from renewables
    • Nuclear Power
      • Fissile fuels (able to sustain chain reactions) e.g. plutonium 239
      • Nuclear fusion being developed
    • Renewable Energy Resources
      • Parabolic reflectors - reflects light to single point (solar)
      • Heliostats - tracks sun to get maximum light (solar)
      • Oscillating water column - generates electricity through changes in air pressure caused by tides (tidal)
      • Pelamis - sections of the machine bend in water and movement is converted to energy (tidal)
      • In-stream tidal turbines - tides turn blades of a turbine to power generator (tidal)
      • Gallium arsenide cells instead of silicon (solar)

Comments

Pete Langley - Get Revising founder

I love the use of links here. Great mindmap!

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