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Windmill

By: John Abraham Wes Jones Scott Burnette Mandi Hall. Windmill. Group Members. John Abraham Scott Burnette Mandi Hall Wes Jones. The Windmill. Design. Fan Connected to generator through pulleys The generator has a spinning coil Magnets are set around the coil

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Windmill

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  1. By: John Abraham Wes Jones Scott Burnette Mandi Hall Windmill

  2. Group Members • John Abraham • Scott Burnette • Mandi Hall • Wes Jones

  3. The Windmill

  4. Design • Fan Connected to generator through pulleys • The generator has a spinning coil • Magnets are set around the coil • The coil is soldered to piece of copper tape on the spinning shaft • Wires rest on copper tape to send current to light bulb

  5. Efficiency • Theoretical Power - - A = Area = 0.011 m^2 V= Velocity = 21.5 m/s ρ = density of air = 1.2 kg/m^3 Theoretical Power = 67.0 watts

  6. Efficiency (contd.) • P = IV • = 1.2 * 6 = 7.2 watts • V= voltage • I = Current (amps) • Efficiency = = 10.7%

  7. Design Issues • Spin coil or spin magnets? • Getting light bulb to light • Overcoming friction from pulleys • Getting coil to spin fast enough

  8. Conclusion • A spinning coil was used to decrease the weight • Lubrication was used to decrease friction • Pulleys with a 15:1 ratio were used to get the shaft spinning fast enough • Efficiency = 10.7 %

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