Wind turbine technology kid wind project

Wind Energy Technology What works & what doesn’t www.kidwind.org

KidWind Project | www.kidwind.org KidWind Project | www.kidwind.org What is KidWind? The KidWind Project is a team of teachers, students, engineers and practitioners exploring the science behind wind energy in classrooms around the US. Our goal is to introduce as many people as possible to the elegance of wind power through hands-on science activities which are challenging, engaging and teach basic science principles.

KidWind Project | www.kidwind.org Orientation Turbines can be categorized into two overarching classes based on the orientation of the rotor Vertical Axis Horizontal Axis

Vertical Axis Turbines KidWind Project | www.kidwind.org ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Lift vs Drag VAWTs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

VAWT’s have not been commercially successful, yet… ,[object Object],WindStor Mag-Wind WindTree Wind Wandler

Tip Speed Ratio Capacity Factor

Horizontal Axis Wind Turbines ,[object Object],[object Object]

Active vs. Passive Yaw ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Airfoil Nomenclature w ind turbines use the same aerodynamic principals as aircraft KidWind Project | www.kidwind.org

Lift & Drag Forces ,[object Object],[object Object],α = low α = medium <10 degrees α = High Stall!!

Apparent Wind & Angle of Attack α = angle of attack = angle between the chord line and the direction of the relative wind, V R . V R = wind speed seen by the airfoil – vector sum of V (free stream wind) and ΩR (tip speed). α V R = Relative Wind V ΩR Ωr V

Tip-Speed Ratio ,[object Object],[object Object],[object Object],ΩR R Where, Ω = rotational speed in radians /sec R = Rotor Radius V = Wind “Free Stream” Velocity ΩR R ΩR V TSR =

Performance Over Range of Tip Speed Ratios ,[object Object],[object Object]

Twist & Taper ,[object Object],[object Object],[object Object]

Pitch Control vs. Stall Control ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Airfoil in stall ,[object Object],[object Object],[object Object]

Rotor Solidity ,[object Object],[object Object],[object Object],R A a Solidity = 3a/A

[object Object],Betz Limit ,[object Object],[object Object],Rotor Wake Rotor Disc

Number of Blades – One ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Number of Blades - Two ,[object Object],[object Object],[object Object]

Number of Blades - Three ,[object Object],[object Object],[object Object],[object Object]

Blade Composition Wood ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Blade Composition Metal ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Blade Construction Fiberglass ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Hubs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Drive Trains ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Direct Drive Enercon E-70, 2.3 MW (right) GE 2.3 MW (above) Multi-drive Clipper Liberty 2.5 MW (right)

Rotor Controls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Towers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The KidWind Project www.kidwind.org

Wind turbine technology kid wind project

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Viewers also liked

Viewers also liked (20)

Similar to Wind turbine technology kid wind project

Similar to Wind turbine technology kid wind project (20)

More from Tuong Do

More from Tuong Do (20)

Recently uploaded

Recently uploaded (20)

Wind turbine technology kid wind project