Transcript Reel-Effishient

Reel eFISHient
TM
‘’Bringing wind-based, low voltage power
to an LED near you! ’’
Team Members:
• Zack Hayden
•Kaitlyn Jansen
•William Martin
•Kevin Ra
The Team
Design Overview
Mechanical Aspects
• Propeller design is based on that of a pinwheel
• Rotational energy created by propeller drives a gear box in a
fishing reel
• The fishing reel redirects the direction of the torque
• The gear box also increases the angular velocity
• Magnets are hung from the reel and spin in the generator
Electrical Aspects
• The magnets spin inside the generator producing a small current
• A very long length of wire
• High gauge
• Strong magnets
• Moderate angular velocity

How Efficient Is Reel eFISHient?
eff 
PACTUAL
PTHEORETICAL
.0525W
eff 
100 10.6%
.494W
1
1
3
PTH  (Av )  (1.225kg/m 3 )(.164m 2 )(1.7m /s)3  .494W
2
2
PACT  (Volts)(Amps) 1.4V  .0375A  .0525W
Passing Wind: Encounters with
Problems
• Number of turns increases current, but also increases
resistance
• Connection issues
• Spinning magnets and resonance
• Hasty decisions lead to broken parts
• Number of magnets is irrelevant if the wire has been cut
Conclusions
• Poor planning can be overcome by teamwork
• Bar magnets were the better choice for this project
• Mistakes were made with the wire (gauge, length, placement)
• Although wind is free and ubiquitous, it is a difficult resource to
harvest
• Sucking up to the teachers will get us nowhere
• Cheryl rocks!