RENEWABLE ENERGY Cabrillo College Engineering 5
Dec 30, 2015
Wind Turbines
What are the different kinds?
How do they work?
Build your own windmill Test its power output
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 Windturbines http://inhabitat.com/super-powered-magnetic-wind-turbine-maglev/
http://www.maglevwindturbine.com/
How do they work?
Solar Powered !
Wind moves blades
Blades turn generator
DC current generated by rotating coil & magnets
P = ½ ρΑV3
P = Power (Watts)
ρ = Density of air (kg/m3)
A = Swept area (m2)
V = Wind speed (m/s)
The Power of Wind
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
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
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?
Sources
Horizontal Axis TurbinesThe Wind Ninja Savonious photosPegasus Darrieus photo
World of Energy Wind Power Off The Grid Living Estonian Windmill Helix Wind