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Harnessing Wind Energy

Harnessing Wind Energy. Kevin Dahm July 9, 2007. Sailboats. The sail dates back to at least 4000 B.C., when Egyptians developed square papyrus sails. ACTIVITY. Using the materials provided, design and construct a sail that will power the raft.

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Harnessing Wind Energy

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  1. Harnessing Wind Energy Kevin Dahm July 9, 2007

  2. Sailboats The sail dates back to at least 4000 B.C., when Egyptians developed square papyrus sails

  3. ACTIVITY • Using the materials provided, design and construct a sail that will power the raft. • Try to predict which materials/sizes/shapes will catch the wind most effectively.

  4. ACTIVITY • Using the materials provided, design and construct a sail that will power the raft. • Try to predict which materials/sizes/shapes will catch the wind most effectively. • This activity is taken from an Engineering is Elementary module, “Catching the Wind.”

  5. Designing Windmills

  6. Designing Windmills

  7. Dates to at least 900 AD Dates to at least 400 BC

  8. Modern Energy Systems

  9. Question What kind of engineering is this? Discuss with neighbors for 30 seconds.

  10. Modern Energy Systems

  11. Cape Wind: Wind farm off Cape Cod

  12. Cape Wind Why would anyone think this is a bad idea?

  13. Cape Wind Critics • Aesthetics

  14. Cape Wind

  15. Cape Wind Critics • Aesthetics • Navigation hazard • Air traffic hazard (each turbine is taller than the statue of liberty) • Create false radar signals

  16. Cape Wind Critics • Aesthetics • Navigation hazard • Air traffic hazard (each turbine is taller than the statue of liberty) • Create false radar signals • Local environmental impact • Birds • Fish

  17. Take home messages • Multiple solutions to any problem • Engineering practice: Predict, design, build, test, improve • Don’t fall in love with your first idea!

  18. Mechanical Engineers design and produce machines that perform specific tasksElectrical Engineers design systems that generate, deliver and use electricityCivil Engineers design and oversee construction of society’s infrastructure

  19. Linkage to math: Use stopwatch to determine rate at which different sailboats are moving Linkage to societal issues: Solutions to technical problems must be efficient, economical and effective in a societal/global context

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