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The Shade Tree Kings

The Shade Tree Kings. Connor, Anthony, Randy, and Shin. Equations Involved. KE=1/2*m*v^2 Input P=1/2*rho*A*V^3= 0.55 Watts Output P=V*I=1.7*0.1= 0.17 Watts Efficiency= 0.17/0.55= 0.31 or 31%. The Initial Design. Spoons for the blades of the fan Dowel rod glued to the fan

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The Shade Tree Kings

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  1. The Shade Tree Kings Connor, Anthony, Randy, and Shin

  2. Equations Involved • KE=1/2*m*v^2 Input • P=1/2*rho*A*V^3=0.55 Watts Output • P=V*I=1.7*0.1=0.17 Watts Efficiency= 0.17/0.55=0.31 or 31%

  3. The Initial Design • Spoons for the blades of the fan • Dowel rod glued to the fan • Magnets glued to the dowel rod that rotated inside coiled copper wire • Duct to funnel the air directly into the blades of the fan

  4. Complications • Spoons were not angled in the correct position, causing negative torque • Needed a way to “hang” the copper wire around the magnets without interfering with the rotating dowel rod • Generator did not have enough coiled wire or magnetic strength • Fan caused a lot of oscillation because of its imbalance of weight and was not perfectly aligned • Duct did not funnel the air as intended

  5. ResolutionsZip Ties, and Super Glue, and More Zip Ties and Super Glue • Used zip ties, wood, and PVC pipe to develop a new fan • Zip tied and screwed to secure the generator onto the end of the PVC pipe • Glued pipe into the base to secure the fan, lowering the imbalance of force from the weight of the fan • Glued wood and screwed down the top of the housing to lower the oscillations • Found and/or bought stronger and lighter magnets • Added more coiled wire to the generator

  6. Costs • PVC pipe- $1.00 • Bearings- $3.00 • Magnets- $6.00 • Wood (dowel rod and base)- $1.00 • Zip ties- $2.00 • Glue- $3.00 • Screws- $1.00 • Copper Wire- $20.00 In total we estimate our cost to be about $37.00

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