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Windcar

Windcar. Gymnasium Elišky Krásnohorské Ohradní 55 2005. Task. Construct a car which is propelled solely by wind energy. The car should be able to drive straight into the wind. Determine the efficiency of your car. Table of contents. Wind turbine types Darrieus type wind turbine Our model

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Windcar

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  1. Windcar Gymnasium Elišky Krásnohorské Ohradní 55 2005

  2. Task Construct a car which is propelled solely by wind energy. The car should be able to drive straight into the wind. Determine the efficiency of your car.

  3. Table of contents • Wind turbine types • Darrieus type wind turbine • Our model • Testing model (video)

  4. Wind turbine types • Dutch four arm • High speed propeller • Cup anemometer • Darrieus type

  5. High efficiency rotor Easy-to-build rotor Simpler calculation of efficiency Totally independent on wind direction No special gearbox Low model height Axis Horizontal X Vertical

  6. Darrieus type wind turbine • Invented in 1931 by G. J. M. Darrieus • 2, 3 or 4 aerodynamic airfoils blades • Powered by lift forces • Efficiency max. 45% (depends on dimensions)

  7. Our model • Polystyrene airfoils NACA0015 • Low weight (120g) • Dimensions 36x36x19cm • Approx. Efficiency 2‰

  8. Aerodynamic tunnel • Inner dimensions 25x50x200cm • 1,4kW wood-dust extractor used • typically wind speed 3m/sec.

  9. Testing (video)

  10. Recapitulation • Analysis wind turbine problem • Select optimal solution • Develop functional model • Model testing • Results analysis

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