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Energy Sources

Energy Sources. Non-renewable?. Non-renewable. Finite (being depleted – will run out) In general from a form of potential energy released by human action. Fossil fuels – Coal, oil, gas. Nuclear fuels. Renewable?. Renewable. Will not run out (in the near future)

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Energy Sources

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  1. Energy Sources

  2. Non-renewable?

  3. Non-renewable • Finite (being depleted – will run out) • In general from a form of potential energy released by human action

  4. Fossil fuels – Coal, oil, gas

  5. Nuclear fuels

  6. Renewable?

  7. Renewable • Will not run out (in the near future) • Mostly directly or indirectly linked with the sun (the exception is tidal energy)

  8. Photovoltaic cells

  9. Active solar devices

  10. Wind

  11. Wave

  12. Tidal

  13. Biomass

  14. World energy production

  15. Energy Density

  16. Energy Density • The energy that can be obtained from a unit mass of the fuel • J.kg-1 • If the fuel is burnt the energy density is simply the heat of combustion

  17. Energy density • Coal - 30 MJ.kg-1 • Wood - 16 MJ.kg-1 • Gasoline – 47 MJ.kg-1 • Uranium – 7 x 104 GJ.kg-1 (70000000 MJ.kg-1)

  18. Your task?

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