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Alternative fuel technologies Guy Geens < [email_address] > http://www.iggyland.com/ http://kanonnenpoetser.blogspot.com/ ...
Baseline: fossil fuels <ul>Advantage <li>Well-established technology
Vast network of fuel stations </li></ul><ul>Disadvantage <li>(Relatively) limited supply
Pollution
CO 2 </li></ul>
Improving the combustion engine <ul><li>Increasing efficiency </li><ul><li>Ongoing engineering effort
Theoretical limit: Carnot engine </li></ul><li>Reduce toxic emissions </li><ul><li>Catalyst
Particle filter </li></ul><li>Start/stop </li><ul><li>Some improvement, depending on driving profile </li></ul></ul>
Hybrid <ul><li>Charge a battery during </li><ul><li>Deceleration (breaking)
Descending
Excess energy from combustion engine </li></ul><li>Use the saved energy to drive an electrical engine
Increases milage
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Alternative fuels

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Transcript of "Alternative fuels"

  1. 1. Alternative fuel technologies Guy Geens < [email_address] > http://www.iggyland.com/ http://kanonnenpoetser.blogspot.com/ http://www.slideshare.net/ggeens Barcamp Antwerpen 2010
  2. 2. Baseline: fossil fuels <ul>Advantage <li>Well-established technology
  3. 3. Vast network of fuel stations </li></ul><ul>Disadvantage <li>(Relatively) limited supply
  4. 4. Pollution
  5. 5. CO 2 </li></ul>
  6. 6. Improving the combustion engine <ul><li>Increasing efficiency </li><ul><li>Ongoing engineering effort
  7. 7. Theoretical limit: Carnot engine </li></ul><li>Reduce toxic emissions </li><ul><li>Catalyst
  8. 8. Particle filter </li></ul><li>Start/stop </li><ul><li>Some improvement, depending on driving profile </li></ul></ul>
  9. 9. Hybrid <ul><li>Charge a battery during </li><ul><li>Deceleration (breaking)
  10. 10. Descending
  11. 11. Excess energy from combustion engine </li></ul><li>Use the saved energy to drive an electrical engine
  12. 12. Increases milage
  13. 13. Additional batteries increase weight </li></ul>
  14. 14. Purely electrical engine <ul>Advantage <li>Silent
  15. 15. No exhaust gasses
  16. 16. Charge at home </li></ul><ul>Disadvantage <li>Only as green as the power plant
  17. 17. Limited action radius </li><ul><li>Swap-out batteries? </li></ul><li>Long recharge times
  18. 18. Weight of batteries </li></ul>
  19. 19. Energy density
  20. 20. More about batteries <ul><li>Batteries add to the weight of a car
  21. 21. Charging generates heat
  22. 22. Battery technology puts limits on </li><ul><li>Load current
  23. 23. Battery lifetime
  24. 24. Duty cycle </li></ul><li>Li is low weight </li><ul><li>Explosive (somewhat)
  25. 25. Toxic </li></ul></ul>
  26. 26. LPG <ul>Advantage <li>Standard combustion engine
  27. 27. Less exhaust gasses
  28. 28. Well-known technology
  29. 29. Lower cost </li></ul><ul>Disadvantage <li>(Outdated) security measures </li><ul><li>Limits availability
  30. 30. And use </li></ul><li>Limited supply (fossil fuel)
  31. 31. Still requires gasoline to start </li></ul>
  32. 32. Natural gas (CNG) <ul>Advantage <li>Lower exhaust
  33. 33. Fill at home
  34. 34. Uses a modified gasoline engine
  35. 35. Safer than gasoline </li></ul><ul>Disadvantage <li>No fuel stations available
  36. 36. NG network is not designed for high volumes
  37. 37. Limited supply </li><ul><li>Different from petrol </li></ul></ul>
  38. 38. Ethanol <ul>Advantage <li>Can be produced from waste products
  39. 39. => no CO 2 during use
  40. 40. Uses a modified combustion engine </li></ul><ul>Disadvantage <li>Significant energy cost during production </li><ul><li>CO 2 balance can be negative </li></ul></ul>
  41. 41. Hydrogen <ul>Advantage <li>Exhaust gas is pure water </li></ul><ul>Disadvantage <li>Hydrogen needs to be made </li><ul><li>Uses energy </li></ul><li>Storage and transport issues </li><ul><li>H 2 leaks </li></ul><li>Safety </li><ul><li>Explosive </li></ul></ul>
  42. 42. Thank you for your time Questions?
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