1. Grab and Go Electricity
Once You Pop, the Fun Don’t Stop
Sean Meek
Chris Jones
Kyle Johnson

2. Summary
Goal:
Build generator converting wind energy to electricity
Parts:
Total cost: ~$20
Scrap wood
“Pringles” Can(s)
Magnetic Wire
Magnets

3. Generator

4. Problems Frequent problems with friction
Difficulty in axis turning and staying in place without too much friction
Fixed problem by filing axis to a point on the bottom, replacing the contact point with metal and removing the wooden piece that held it in place

5. Calculations P = (1/2)pAv3
P= power (W)
p = air density (kg/m3)
A = area of fan (m2)
V = wind velocity (m/s2)
Ptheo = (1/2)(1.225 kg/m3)( m2)(1.7 m/s2)3
Ptheo = W

6. Calculations (continued)
Voltageactual = 0.9 Volts
Pact = 0.01 W
Efficiency = Pact/Ptheo
E =(0.01 W)/ ( W)
E = = 17.6%

7. Conclusion Goal reached What we learned: Requirements met
How to work in a group effectively
How to apply concepts from EF 152