Download
energy power and climate change n.
Skip this Video
Loading SlideShow in 5 Seconds..
Energy, Power and Climate Change PowerPoint Presentation
Download Presentation
Energy, Power and Climate Change

Energy, Power and Climate Change

118 Vues Download Presentation
Télécharger la présentation

Energy, Power and Climate Change

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Energy, Power and Climate Change 8.4 Non Fossil Fuel Power Production

  2. Non Fossil Fuel Power Production Wind Power The air has to keep moving after passing through the blades. This imposes a limit on the proportion of energy that can be taken from the wind (59%). The turbine and generator then usually convert around 70% of the energy ‘taken out’ into electricity.

  3. Turbine blades, radius r, area A If the air is approaching at velocity v then it travels through a distance v per second. Thus the volume of air passing through per second = Area x distance = πr2 x v If the air has initial density ρ then the mass passing per second = ρ x volume = ρ x πr2 x v = ρπr2v

  4. If Ek = ½ mv2 Then every second the energy in the wind is given by... Ek= ½ ρπr2v v2 So power in the wind is given by... P = ½ ρπr2v3

  5. Wave Power Text

  6. Subtitle Text

  7. Subtitle Text

  8. Subtitle Text

  9. Subtitle Text

  10. Subtitle Text

  11. Subtitle Text

  12. Subtitle Text

  13. Subtitle Text

  14. Subtitle Text

  15. Subtitle Text

  16. Subtitle Text

  17. Subtitle Text

  18. Subtitle Text

  19. Subtitle Text

  20. Subtitle Text

  21. Subtitle Text