Cabrillo College Engineering 5

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

 Savonious, Horizonatal & Darrieus Wind Turbines Savonious, Horizonatal & Darrieus Wind Turbines

 Joby Energy Airborne Windturbines   Japanese Wind Power Breakthrough  innovations/blogs/japanese-breakthrough-will- make-wind-power-cheaper-than- nuclea?hpt=hp_bn11 innovations/blogs/japanese-breakthrough-will- make-wind-power-cheaper-than- nuclea?hpt=hp_bn11  Maglev Windturbines wind-turbine-maglev/ wind-turbine-maglev/ 

 Solar Powered !  Wind moves blades  Blades turn generator  DC current generated by rotating coil & magnets

 P = Power (Watts)  ρ = Density of air (kg/m 3 )  A = Swept area (m 2 )  V = Wind speed (m/s) The Power of Wind

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

? Design to Optimize

 Name of your Windmill  Current measured in Amps  Voltage measured in Volts  Calculate Power: Watts = Amps x Volts  Diameter of Blades in cm

 Paper  Bamboo Skewers  Hot Glue  Cork Hub

 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?

 Horizontal Axis TurbinesThe Wind Ninja Horizontal Axis Turbines  Savonious photos Pegasus Savonious photos Pegasus  Darrieus photo World of Energy Wind Power Darrieus photo World of Energy  Off The Grid Living Off The Grid Living  Estonian Windmill Estonian Windmill  Helix Wind Helix Wind