Andrew HowardDevin Handler

Brett Moll

EF 152 Project 2 Windmill Generator

Team B.A.D. ( Brett, Andrew, Devin)

Device DesignOur device was constructed using only $22.50 and took us approximately 5 hours to construct. Our Final project used 4 High Power Neodymium Magnets which rotate inside the housing wrapped in our wire. We coiled the 34 AWG enamel coated magnetic wire around the magnet housing and used epoxy to suspend the magnets in the middle of the housing. We used light wood paneling to design the windmill blade which proved to be very effective at generating a high amount of RPM from wind power. We constructed our device using the most powerful magnets we could find under our budget and highly conductive wire. We also used light weight material to increase the amount of RPM’s we could get from the fan input.

Summary of Mechanical and Electrical aspects of device

Mechanical8 bladesArea of each blade is 77cm²Height of the machine is .305mThe base is .305m X .406mWindspeed from the fan is 8.94m/sLow friction between the wooden dowel and

polyvinylchloride bearings

Summary of mechanical and electrical aspects of deviceElectrical

We used ¼X ¼ X ½ inch neodymium magnets

Estimated about 1500 coils of 34 AWG magnetic wire

20cm of wire per loop, so approximately 306m of wire used

Output 2.75 V during testingMeasured resistance 256 Ω

Efficiency and Calculations1. Calculate length of wire using:

2. Power is calculated using: P=0.295J

3. Wind power is:P=27.8J

4. Efficiency is:E=.106%

Design and Construction IssuesOur main design issue came from our wire.

Because it is so small, we believe that it has too much resistance to support a current.

Another problem we encountered was that it was very hard to strip the enamel off the wire without breaking it.

Conclusions Many of our conclusions came from

mistakes we made during this projects.Don’t trust the US Postal ServiceSmaller wire is not always betterScrap wood = free woodFree = Better