German Presentation About Energy

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German Presentation About Energy

  1. 1. Possibilities for alternative Energy in Germany Edgar Ullrich Tuma, Julia-Marie Krüger, Riko Korzetz, Laura Malik, Christian Eichmann
  2. 2. Content: <ul><li>Solar energy and Photovoltaic </li></ul><ul><li>Hydropower </li></ul><ul><li>Wind power </li></ul><ul><li>Biomass </li></ul><ul><li>Geothermal Power </li></ul>
  3. 3. Solar Energy and Photovoltaik <ul><li>Solar collectors = alternative for solar cells </li></ul><ul><li>Good in Germany: electricity is cheap </li></ul><ul><li>Advantages: </li></ul><ul><li>can be used to heat water -> efficience factor 70% </li></ul><ul><li>„ long lifes“; about 40 years </li></ul><ul><li>pays off (energy, money) </li></ul><ul><li>in winter -> nearly all heating by collectors </li></ul>Solar Collectors
  4. 4. <ul><li>Photovoltaic = direct transformation of solar energy to electricity </li></ul><ul><li>Photovoltaic = part of solar engineering </li></ul><ul><li>Name: Photos + Volta (Alessandro Volta) </li></ul><ul><li>Based on photoelectric effect (by Alexandre Edmond Becquerel ) </li></ul><ul><li>Photovoltaic = not really effective in Germany (to less insolation, no sun at night) </li></ul>Photovoltaic
  5. 5. Hydropower <ul><li>Kinetic energy of water transformed to electric energy </li></ul><ul><li>In former times –> water wheels and mills </li></ul><ul><li>Supplies 19% of world energy </li></ul><ul><li>Ocean current power stations; tidal power stations; wave power stations </li></ul>General informations
  6. 6. <ul><li>Pro: </li></ul><ul><li>No emmisions </li></ul><ul><li>Limited ressources aren´t needed </li></ul><ul><li>Effective </li></ul><ul><li>Possibilities of saving energy for some time </li></ul><ul><li>Cons: </li></ul><ul><li>Requires flooding </li></ul><ul><li>Expensive </li></ul><ul><li>Fishing close to the station is difficult </li></ul><ul><li>Dam failures! </li></ul>Hydropower in Germany
  7. 7. Wind Power <ul><li>Former times: wind used by windmills, sailing ships </li></ul><ul><li>Now: wind power stations </li></ul><ul><li>Feeds 6.4 % of energy demand in Germany (2007) </li></ul><ul><li>Especially used in: </li></ul><ul><li>-> USA (25,170 MW) </li></ul><ul><li>-> Germany (23,903 MW) </li></ul><ul><li>-> Spain (16,754 MW) </li></ul><ul><li>Growing Utilisation (look right) </li></ul><ul><li>A lot of research is done </li></ul>General informations
  8. 8. <ul><li>= Expensive -> promotion by state </li></ul><ul><li>Mainly in the north (less mountains, less citys) </li></ul><ul><li>Mecklenburg Prepommerania: </li></ul><ul><li>A lot of wind power </li></ul><ul><li>Less people (-> not disturbed) </li></ul><ul><li>„ Offshore“ installations in the baltic sea are build </li></ul>Wind Power in Germany
  9. 9. Biomass <ul><li>Biomass =renewable energy source </li></ul><ul><li>Living organisms (wood, waste, and alcohol fuels ) </li></ul><ul><li>Use miscanthus, switchgrass, hemp, corn, poplar, willow, sorghum, sugarcane </li></ul><ul><li>CO2-neutral </li></ul><ul><li>Usefull, because leftover food can be used </li></ul>General informations
  10. 10. <ul><li>Pro: </li></ul><ul><li>You can use every kind of biological things, e.g. leftover food, wood, corn,… </li></ul><ul><li>Biomass is not limited </li></ul><ul><li>Cons: </li></ul><ul><li>Fewer food (and etc.) </li></ul><ul><li>Food -> more expensive </li></ul><ul><li>Burning -> emissions </li></ul>
  11. 11. Geothermal Power <ul><li>power extracted from heat stored in the earth </li></ul><ul><li>was used for heating baths and rooms in ancient Roman times </li></ul><ul><li>can now be used for generating electricity </li></ul><ul><li>generate now 0,3 % of global electrictiy demand </li></ul>General Informations
  12. 12. <ul><li>Pro: </li></ul><ul><li>pumps = long life </li></ul><ul><li>no emissions </li></ul><ul><li>little space needed </li></ul><ul><li>less costs for electricity and gas </li></ul><ul><li>Against: </li></ul><ul><li>investment costs = about 10,000 € </li></ul><ul><li>complex installing </li></ul><ul><li>just effective for insulated houses </li></ul><ul><li>big garden is needed </li></ul>Geothermal Power in Germany

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