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Renewable perdarytas


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  • 1. Renewable Energy By Mateusz Foligowski László Molnár and Sergejus Ivanovas
  • 2. Agenda
    • What is renewable energy?
    • Why do we need these?
    • Types of renewable sources
    • Conclusion
  • 3. What is renewable energy?
    • Generated from:
    • Sunlight
    • Water
    • Wind
    • Rain
    • Tides
    • Geothermal sources
    • Biomass sources
  • 4. Why do we need these?
    • Lack of non-renewable energy
    Coal 150-170 years Fossil Fuel 30-40 years Nuclear energy Long time, but low level of social acceptability
  • 5. Why do we need these?
    • Environmental problems
    • Water pollution
    • Air pollution
    • Nuclear waste
  • 6. Why do we need these?
    • To avoid disasters
  • 7. Types of renewable sources
    • I. Solar energy
    • The sun is free, but the solar cells and other equipments are very expensive
    • Varies with the season and weather
    • Comes from the sun
    • To heat or light buildings, to generate electicity, to heat the hot water
    • Passive and Active solar energy
  • 8. Types of renewable sources
    • I I . Wind power
    • Windmills -> to pump water or grind grain
    • Wind turbines -> to genetare electricity
    • World’s fastest-growing energy technology
    • 1% of the world’s electricity comes from this way
    • It requires big territories
  • 9. Types of renewable sources
    • I II . Hydro power
    • Renewable due to the water cycle
    • Hydroelectric energy, Micro hydro system, Damless hydro system, Ocean energy
    • Uses water to power machinery or make elctricity
    • It gives the 20% of the World’s electricity and the 63% of the energy from renewable sources
  • 10. Types of renewable sources
    • I V . Geothermal energy
    • Obtained by tapping the heat of the Earth
    • Expensive to build, but cheap to operate
    • Dry steam, flash plants, binary plants
    • Hot dry rocks technology
    • Main users: USA, Iceland, Chile, Philippines
  • 11. Types of renewable sources
    • V . Biomass and Biofuel
    • M aterial from living, or recently living organisms .
    • W ood, waste, (hydrogen) gas, and alcohol fuels.
    • Biomass is commonly plant matter grown to generate electricity or produce heat.
  • 12. Using of renewable energies
  • 13. Thanks for the attention!