大象传媒

Wind energy

Tower attached to underground foundation. Nacelle containing generator at top of tower. Blades connect to generator. Wind causes blades to rotate. Kinetic energy converted to electricity by generator.

Wind turbines use the wind to drive turbines directly.

As the wind blows, it transfers some of its kinetic energy to the blades, which turn and drive the generator, to produce electricity.

Several wind turbines may be grouped together to form a wind farm.

of the wind \(\rightarrow\) electrical energy.

Advantages

  • It is a renewable energy resource.
  • There are no fuel costs.
  • No harmful polluting gases are produced.

Disadvantages

  • Wind farms are noisy and may spoil the view for people living near them.
  • If there is no wind, there is no electricity.