Wind turbines, computer artwork. The blades of the turbines (most designs have three blades) are turned by the wind. As the turbine blades rotate, electricity is generated in the structure mounted just behind the blades. A tall support structure (usually over 50 metres tall) allows the blades to take advantage of the wind. Many hundreds or even thousands of wind turbines can be used on a wind farm to generate power for thousands of homes. Wind power is an environmentally-friendly source of energy, as it does not release pollutants and does not rely on a limited resource (such as oil) for fuel.
© Victor Habbick Visions/Science Photo Library
Wind turbines at a wind farm
Wind farm. Wind turbines at a wind farm. Eachturbine has three blades which rotate around ahorizontal axis, turning a shaft which drives anelectric generator. Wind turbines are tall and areplaced on hills or by the sea so that they receiveas much wind as possible. This is because thepower which they generate increases with longerblades and higher wind speeds. Most machines aredesigned to operate in windspeeds between 21 and60 kilometres per hour. The angle of the bladescan be altered to improve efficiency or preventoverspeeding. Photographed at Glynfech Farm inWales, Great Britain.
© Francoise Sauze/Science Photo Library
Sea Challenger, Westermost Rough Wind Farm DP168932
Westermost Rough Wind Farm six weeks after completion. Turbine installation was carried out using this purpose built specialist jack-up vessel, Sea Challenger.
Boat, Electricity, Environmental, Red, Renewable, Sea, Ship, Wind Power