Wind Power. Wind Patterns Global winds Sea and land breezes Valley winds.

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Presentation transcript:

Wind Power

Wind Patterns Global winds Sea and land breezes Valley winds

Global Wind

Sea, land, and valley winds

Wind Rose Direction Speed Frequency

Equations Wind power increases as the square of diameter, but cube of wind speed

Scaling (Example) A wind turbine (d=3m) generates 10 kW of power at wind speed of 4 m/s. How much power will it produce If the turbine diameter were increased to 6 m? If wind speed suddenly increased to 12 m/s? With the same wind conditions, would turbine produce more power in winter or summer?

Wind Turbine Principle of operation

Design Considerations Rotor Size Number of blades Gearbox Generator Controls

Advantages and Disadvantages Advantages Clean Renewable Disadvantages Intermittent Wind speed not too slow, not too fast Noise Aesthetic Dangers to birds

Siting Wide areas with open views in all direction Valleys and ridges Close to power grid Away from towns and population centers

Future

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