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Team Volunteers. Matt Rhule Tony Carr Kevin Black David Young. Overview. We used plexiglass for the frame. We used 4 magnets inside the frame wrapped with magnetic wire on the outside. We attached the fan to the metal rod and stuck it through the frame.
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Team Volunteers • Matt Rhule • Tony Carr • Kevin Black • David Young
Overview • We used plexiglass for the frame. • We used 4 magnets inside the frame wrapped with magnetic wire on the outside. • We attached the fan to the metal rod and stuck it through the frame.
Mechanical and Electrical Aspects • Mechanical • The wind hits the fan and causes the blade to spin. • The fan then turns the rod that the magnets are attached to. • Electrical • As the magnets spin, a magnetic field creates a current. • The current then runs through the wire which is connected to the light bulb to turn it on.
Calculated Efficiency • η (Efficiency in %)= (Actual Power / Theoretical Power) * 100 • Theoretical Power = Power of fan = ½ρAv³ • = ½( 1.204 kg/m³)( .0113 m²)( 6.7056 m/s)³ = 2.0511 watts • Actual Power = Power of generator = IV • = (0.18 amps)(3.6 volts) = 0.648 watts • (0.648 watts)/(2.0511 watts) * 100 = 31.593% Efficiency
Construction/Design Issues • The original design failed to produce a current, probably due to faulty magnets or wiring. • The original casing hindered easy development and wasn’t stable. • In both designs, the blade is a little heavy, causing friction and less power generated.
Conclusion • Despite having to redesign the windmill, the project was successful, correctly lighting up a light bulb. • Worked well in a group and learned about current, electricity, and basic generator design.