Slide 1

Introduction toWind Energy1Where do we get our electricity?

22What is Renewable Energy?

3Major Parts of a Wind Turbine

Engine/Generator4

5Wind Turbine Perspective

Engine56 tonsTower3 sectionsWorkersBlade120 long

Wind Turbine Perspective350+ base to bladeEach blade 120Span greater than a large planeWeigh approx 160 tons Foundation 20+ feet deepSupply at least 350 homes

7Yawing Facing the WindActive Yaw (all medium & large turbines produced today)Meter on engine tells controller which way to point the hub into the wind.Yaw drive turns gears to point the hub into wind.

Passive Yaw (Most small turbines)Wind forces direct rotor using tail vanes.

8

9Note where wind energy projects are located.

CA, TX are the leadersIA, MN and WA are the next batch.

Projects tend to be where the wind is located.not a whole lot in the SEBreakin it downIf PA generates 179 MW (per day) Megawatt = 1,000,000 wattsAn average household uses 16,500 watts per day. How many houses will PAs wind farms support?Approximately 10,850 homes at no cost to the environment.

Why do windmills need to be high in the sky??Further From Earth-Less Turbulence from trees, buildings, etc.

-Higher Constant Speed.

11The higher we get the more faster and cleaner the wind are.

As you move closer to the earth the friction with the surface of the earth causes the wind to slow down and to become more turbulentbad things if you want to generate energy from the wind. The nacelle of most commercial wind turbines is around 100 meters.Carnage!

12Jobs in the Wind Industry (next slides)

13Construction

14Operations/Maintenance

15Engineering/Design

16Public Relations/Organizing Support

17Environmental Assessment

18

Wind Turbine Project!Create and Design Your Own

19

Sketch of BladeConstructionGeneral ShapeAll DimensionsNumber of BladesLabeled Materials!

Available Materials (ask for others)Dowel Rod(s)Manila FolderAluminum FoilPlastic WrapPopsicle SticksStrawsPaperclip

Pre-Construction MaterialsWireCardboardFoam PlatesPlastic CupIndex CardsGlueHot GlueMasking Tape

Number of Blades (2, 3, 4, 6, 8)Blade MaterialsSize & Shape of Blades (5-15)Twist and TaperAngle of AttackTopics to ResearchKeywords for ResearchKidwind ProjectWind TurbinesWind MillAirfoil DesignWind Turbine AirfoilsWind Turbine Design