The Turbinator! Hasta la windmill, baby.

The Team  Keshia Agazuma  Corie Davis  Alex James  Jamison Trent  Lee West

The Device  Fan Blades attached to pulley system  Pulley connected to magnets of the generator  Turning of the magnets induce an electric current in the coil

Mechanical and Electrical Components  The fan blades turning produces rotational kinetic energy which is transferred through the pulley system to turn the magnets.  The magnets ’ motion produces a magnetic field which then induces an electric current along the wire

Efficiency  P = 0.5 x ρ x A x Cp x V^3 x Ng x Nb  P = power in watts (746 watts = 1 hp) (1,000 watts = 1 kilowatt)  ρ = air density  A = rotor swept area, exposed to the wind (m2)  Cp = Coefficient of performance  V = wind speed in meters/sec  Ng = generator efficiency  Nb = gearbox/bearings efficiency

Efficiency  P = 0.5*1.164*0.0248*0.35*1.7^3*Ng*0.80  Power was measured to be W  Solving for Ng (generator efficiency) this gives a value of 0.15 or 15%

Design and Construction Issues  Negating friction that is caused by the pulley turning against the wood.  Attaching the coil so that the magnets can spin freely.  Bearing accidentally immobilized with super glue.  Magnets too heavy

Conclusions  Wind from fan is not that powerful, design must be light.  Stronger Magnets + More Coil = More Power  Complicated design produces more problems than benefits.