Harnessing Wind Energy
description
Transcript of Harnessing Wind Energy
Harnessing Wind EnergyHarnessing Wind Energy
Kevin DahmKevin Dahm
July 9, 2007July 9, 2007
SailboatsSailboats
The sail dates back to at least 4000 B.C., when Egyptians developed square papyrus sails
ACTIVITYACTIVITYUsing the materials provided, design and Using the materials provided, design and
construct a sail that will power the raft. construct a sail that will power the raft.
Try to predict which Try to predict which materials/sizes/shapes will catch the wind materials/sizes/shapes will catch the wind most effectively.most effectively.
ACTIVITYACTIVITYUsing the materials provided, design and Using the materials provided, design and
construct a sail that will power the raft. construct a sail that will power the raft.
Try to predict which materials/sizes/shapes Try to predict which materials/sizes/shapes will catch the wind most effectively.will catch the wind most effectively.
This activity is taken from an This activity is taken from an Engineering is Engineering is ElementaryElementary module, “Catching the Wind.” module, “Catching the Wind.”
Designing WindmillsDesigning Windmills
Designing WindmillsDesigning Windmills
Dates to at least 400 BC
Dates to at least 900 AD
Modern Energy SystemsModern Energy Systems
QuestionQuestion
What kind of engineering is this? Discuss with neighbors for 30 seconds.
Modern Energy SystemsModern Energy Systems
Cape Wind: Wind farm off Cape CodCape Wind: Wind farm off Cape Cod
Cape WindCape Wind
Why would anyone think this is a bad idea?
Cape Wind CriticsCape Wind CriticsAestheticsAesthetics
Cape WindCape Wind
Cape Wind CriticsCape Wind CriticsAestheticsAestheticsNavigation hazardNavigation hazardAir traffic hazard (each turbine is taller Air traffic hazard (each turbine is taller
than the statue of liberty)than the statue of liberty)Create false radar signalsCreate false radar signals
Cape Wind CriticsCape Wind CriticsAestheticsAestheticsNavigation hazardNavigation hazardAir traffic hazard (each turbine is taller Air traffic hazard (each turbine is taller
than the statue of liberty)than the statue of liberty)Create false radar signalsCreate false radar signalsLocal environmental impactLocal environmental impact
BirdsBirdsFishFish
Take home messagesTake home messages
Multiple solutions to any problemMultiple solutions to any problem
Engineering practice: Predict, design, Engineering practice: Predict, design, build, test, improvebuild, test, improve
Don’t fall in love with your first idea!Don’t fall in love with your first idea!
Mechanical Engineers design and Mechanical Engineers design and produce machines that perform specific produce machines that perform specific taskstasks
Electrical Engineers design systems Electrical Engineers design systems that generate, deliver and use electricitythat generate, deliver and use electricity
Civil Engineers design and oversee Civil Engineers design and oversee construction of society’s infrastructureconstruction of society’s infrastructure
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