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Vittoria International School , Torino Natural science course

Vittoria International School , Torino Natural science course From fossil fuels to alternative energy sources Professor Elena V. Tibaldi. UTILIZZARE SPAZIO PER INSERIRE FOTO/IMMAGINE DI RIFERIMENTO LEZIONE. cooking gas. transportation. house heating. electricity.

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Vittoria International School , Torino Natural science course

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  1. Vittoria International School, Torino Natural science course From fossil fuels to alternative energy sources Professor Elena V. Tibaldi UTILIZZARE SPAZIO PER INSERIRE FOTO/IMMAGINE DI RIFERIMENTO LEZIONE

  2. cooking gas transportation house heating electricity Why do we need energy?

  3. petroleum (oil) coal natural gas Which are the traditional energy sources? Traditional sources • Traditional sources: • depleted by use • widely used at present • exhausted in near future

  4. What is coal? Solid fossil fuel, responsible for the development of Western industrial growth. • Coalisusedfor: • production ofelectricity in thermalpowerstations • production ofchemicalcompounds CO2 emission upon combustion  environmental pollution

  5. What is petroleum? Petroleum is a mixture of different hydrocarbons derived from decomposition of organic matter in anaerobic conditions http://www.crati.it/mostra/pan7/petrolio.htm#

  6. Through fractional distillation, crude oil is boiled and condensed over several fractions to give the desired mixture of compounds natural gas gasoline kerosene diesel fuel Crude oil lubricating oil fuel oil Bitumen, asphalt http://www.educational.rai.it/corsiformazione/multimediascuola/esperienze/mito_macchina_movimento/ceccano/lemacchine/petrolio.htm

  7. Worlwide natural gas reserves What is natural gas? Natural gas is a mixture of hydrocarbons, mostly methane In its pure form, natural gas is colourless and odourless. For safety reason, mercaptan is added to the gas before delivering www.naturalgas.org

  8. Consumption of world reserves  increase of costs Extraction and transportation  environmental disasters Which are the problems related to the use of hydrocarbons? CO2 production  Environmental pollution

  9. Hydro-electric energy Nuclear energy Biomass energy Solar energy Wind energy Geothermal energy Tidal energy Alternative sources Renewable sources

  10. Hot water production (solar thermal energy) Electricity production (photovoltaic solar energy) Solar energy

  11. kinetic energy electric energy Wind energy Conversion of wind energy into electricity by using turbines and generators. wind farms  groups of wind turbines in the same location

  12. Exploiting endogenous heat inside the Earth Geothermal energy Technological improvements  no geographical limitation

  13. Potential energy of dammed water drives a water turbine and a generator www.earthsci.org Hydroelectric energy Gravitational force of falling or flowing water

  14. Tidal energy Daily rise and fall of tides Saint-Malo, France: 13,5 m gap between low and high tide www.mywindpowersystem.com

  15. www.oncor.com Nuclear energy Fission of uranium Thermal energy release Water heating Steam production Production of electricity Controversial issue: disposal of radioactive waste

  16. conversion technologies Biomass energy garbage, wood, waste, landfill gases and alcohol fuels heat and electricity www.ecofriendlymag.com

  17. In conclusion, in this video we revised the most important traditional energy sources as well as alternative sources of energy. Good bye and good energy to everyone!

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