Reel eFISHient TMReel eFISHient TM

‘’Bringing wind-based, low voltage power to an LED near you! ’’‘’Bringing wind-based, low voltage power to an LED near you! ’’

• Zack Hayden

•Kaitlyn Jansen

•William Martin

•Kevin Ra

Team Members:

The TeamThe Team

Design OverviewDesign Overview

Mechanical AspectsMechanical 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 AspectsElectrical 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?How Efficient Is Reel eFISHient?

€

eff =PACTUAL

PTHEORETICAL

€

eff =.0525W

.494W×100 =10.6%

€

PTH =1

2(ρAv 3) =

1

2(1.225kg /m3)(.164m2)(1.7m /s)3 = .494W

€

PACT = (Volts)(Amps) =1.4V × .0375A = .0525W

Passing Wind: Encounters with Problems

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

ConclusionsConclusions

• 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!