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Renewable Energy

Renewable Energy. Cabrillo College Engineering 5. Wind Turbines. What are the different kinds? How do they work? Build your own windmill Test its power output. Horizontal Axis Wind Turbine HAWT. Savonious Vertical Axis Wind Turbine VAWT. Darrieus Vertical Axis Wind Turbine VAWT.

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Renewable Energy

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  1. Renewable Energy Cabrillo College Engineering 5

  2. Wind Turbines What are the different kinds? How do they work? Build your own windmill Test its power output

  3. Horizontal Axis Wind TurbineHAWT

  4. SavoniousVertical Axis Wind Turbine VAWT

  5. DarrieusVertical Axis Wind Turbine VAWT

  6. Enhancing Wind Power • Joby Energy Airborne Windturbines • http://www.jobyenergy.com/tech • Japanese Wind Power Breakthrough • http://www.mnn.com/green-tech/research-innovations/blogs/japanese-breakthrough-will-make-wind-power-cheaper-than-nuclea?hpt=hp_bn11 • Maglev Windturbineshttp://inhabitat.com/super-powered-magnetic-wind-turbine-maglev/ • http://www.maglevwindturbine.com/

  7. How do they work? • Solar Powered ! • Wind moves blades • Blades turn generator • DC current generated by rotating coil & magnets

  8. P = ½ ρΑV3 The Power of Wind • P = Power (Watts) • ρ = Density of air (kg/m3) • A = Swept area (m2) • V = Wind speed (m/s)

  9. Measure your Power • Power = Current x Voltage • You will use a Multimeter to measure the current and voltage while your windmill is spinning • Watts = Amps x Volts

  10. Variables to Consider ? Design to Optimize

  11. Data to Compare • Name of your Windmill • Current measured in Amps • Voltage measured in Volts • Calculate Power: Watts = Amps x Volts • Diameter of Blades in cm

  12. Your Materials • Paper • Bamboo Skewers • Hot Glue • Cork Hub

  13. Procedure • Discuss the pros and cons of at least three designs with your team before beginning construction. • Select the favored design and construct it on the cork hub attached to the generator. • Test your design at the testing station. • Iterate: Can you imagine changes that would capture more power?

  14. Sources • Horizontal Axis TurbinesThe Wind Ninja • Savonious photosPegasus • Darrieus photoWorld of Energy Wind Power • Off The Grid Living • Estonian Windmill • Helix Wind

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