the windbelt micro-scaled wind power sarah fanto december 8, 2010
TRANSCRIPT
Wind Turbine BasicsThe wind causes the
turbine blades to spin.Gears transfer
rotation from the blades to the generator
The rotational motion in the generator creates electricity.
Micro-Wind EnergyGenerating micro-energy
from wind involves smaller forms of rotating turbines
friction in the gears is the largest form of energy loss in the small-scale wind turbine
the friction is often greater than the energy produced
Micro-Wind TurbinesMicro-wind turbines for domestic electricity could create
more carbon dioxide during manufacture, installation, and maintenance than the micro-wind turbines save during their lifetime.
Turbines in less windy urban areas are unlikely to ever payback their carbon costs
Currently small-scale rotary generators can produce 5mW of power at 12 volts in 10 mph winds
They can retail for thousands of dollars
Aeroelastic FlutterAeroelastic Flutter A self-starting aeroelastic phenomenon, with positive
feedback, where aerodynamic forces aerodynamic forces couple with a structure’s natural mode of vibrationnatural mode of vibration to produce a rapid periodic motionperiodic motion and large amplitudeslarge amplitudes. This aeroelastic happening can produce rapid failure in structures and in many cases needs to be reduced or eliminated.
Power GenerationPower Generation
www.humdingerwind.com/windbelt.htmlwww.humdingerwind.com/windbelt.html
Moving magnets in wire coilsElectromagnetic induction
Basic magnet-coil configuration
Micro-WindbeltMicro-Windbelt
Power Output
3.5 m/s 0.2 mW
5.5 m/s 2.0 mW
7.5 m/s 5.0 mW
The microWindbelts are small: 13 cm x 3 cm x 2.5 cm
Capable of powering wireless sensors and most battery powered wireless application in fluid flow
Large-Scale Applications: Large-Scale Applications: Windcell PanelsWindcell Panels
Panels are made up of 20 1m long windbelts in a 1m x 1m frame
The panels target energy costs of $0.05 per kWh in average windspeeds of 6m/s and a monthly energy of 7.2 kWh
Wind panels have an off-the-line cost of around $100
Advantages of a Windbelt Advantages of a Windbelt Cheap to produce, install, and maintainEasily installed and maintainedWork art low wind speedsRuggedLightweight/portable
ApplicationsApplicationsInstalled in the homeRemote applications
Charging batteriesHigh-efficiency LEDsRadiosWalkie-talkies
Third-world applicationsOne laptop per childMilitary applications