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Wind Turbine Final Report

EAS 140 D2-E , Zack Bauer, Nikita Ranjit Goraksha. Wind Turbine Final Report. WindTER – Wind Turbine Energy Resources. Kristina Monakhova – Program Manager Elizabeth Yasuna – Executive Director Dominick Farina – Business Development Kyle Zalud – Technical Lead. Project Objectives.

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Wind Turbine Final Report

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  1. EAS 140 D2-E, Zack Bauer, Nikita Ranjit Goraksha Wind Turbine Final Report WindTER – Wind Turbine Energy Resources Kristina Monakhova – Program Manager Elizabeth Yasuna – Executive Director Dominick Farina – Business Development Kyle Zalud – Technical Lead

  2. Project Objectives Purpose: Design efficient wind turbines for small and large scale applications Goals: • Build and improve a wind turbine • Strive for continuous improvement • Create a scientific foundation for future improvements/innovations • Focus on simplcity and reliability Source: http://learn.kidwind.org/sites/default/files/windturbinebladedesign.ppt

  3. •Generator •Gear ratios •Oil/Lubricant used •Height of tower •Rotational Speed Background Research - Design Factors for Wind Turbines •Number of blades •Angle of blades •Shape of blades •Blade Twist •Blade Length •Blade materials

  4. Initial Build - Design • Blades • 3 • Balsa wood material • Flat • Roughly 30° tilt • Attached to single wooden dowel with duct tape • Gears: largest and smallest • Base: provided, no support structure

  5. Initial Build - Performance max Voltage: 3.78V max Current: 7mA max Power: .026W Bulb used: LED (lit)

  6. Overview of Design Rationale

  7. Experiments – Blade Shape Configurations: Rectangular, Air foil Rectangular Airfoil Conclusions: Airfoil – maximize lift, minimize drag

  8. Experiment - Number of blades Configurations: A a a a A A 2 blades 3 blades 4 blades Conclusions: 2 blades 3 blades

  9. Experiment - Angles of Blades Configurations: 0 °, 15 °, 30 °, 45 ° Conclusion: 15° is optimal 0° 15° Top View Side View

  10. Experiments – Blade Material Configurations: Balsawood Basswood Posterboard Corrogated Plastic Conclusions: basswood – more inertia

  11. Final Improved Design • Blades • 3 • Bass wood material • Flat • Roughly 15° tilt • Attached to single wooden dowel with wood glue and duct tape • Gears: largest and smallest • Base: duct tape and poster board support structure

  12. Final Improved Design – Rationale and Innovations* • Blades – Basswood * • Heavier • Longer • 15° tilt • Base* • stability

  13. Results - Final Testing 2.05Ws 3V, .02A 160rpm Calculated Values: • Power in wind: 2.7 W • Turbine Efficiency: • Relative to power available in wind : 2.2% • Relative to power available at blades: 3.75% • Rotational Speed of high speed shaft: 1011rpm

  14. Interpretations of results • Successful: • Very consistent voltage • Fairly consistent current/power • Kept on spinning after 60s • Unsuccessful • Low current and power • High cut-in time • Why? • Blades too long – larger than fan diameter • Blades too heavy • No twist to blades • Unbalanced • Tip-Speed Ratio: 3.5 Source: http://learn.kidwind.org/sites/default/files/windturbinebladedesign.ppt

  15. Future Research Blade twist from root to tip Curved Hub to guide wind to blades Different blade lengths for variable wind speeds Different blade widths curved Too long Too short Optimal

  16. Questions?

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