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APPLICATION: Wind Energy- Electricity Production

DESCRIPTION:  There are two primary types of wind turbines: horizontal and vertical

Ø  Horizontal-axis wind turbines have blades that spin in a vertical plane like airplane propellers. The blades have a special shape so that when wind passes over them, it moves more rapidly over one side, creating a low pressure area behind the blade and a high pressure area in the front of it. The difference between these two pressures creates a force which causes the blades to spin.

Ø  The blades of vertical-axis wind machines work on the same principle as horizontal-axis machines: the shape of the blades causes a pressure difference when the wind blows over them and this causes the blade assembly to spin. In a vertical-axis machine, however, the blades spin in a plane that is parallel to the ground, like an eggbeater.

Wind turbines range from small residential systems to large utility systems. Wind power systems are modular and can be scaled easily to any application such as remote power, grid connected, utilities, and hybrid systems.

Remote wind power systems often incorporate additional generating systems such as diesel generators and solar arrays. These “hybrid” systems provide improved reliability of power supply and operational flexibility. When the power from the wind turbine is not sufficient to operate the load, the alternate power source comes on-line. The alternate source is used far less frequently in a hybrid system than if the wind system were not present.

SPECIALIZED EQUIPMENT: Turbines

MANUFACTURER (S): Varied

COUNTRIES WHERE TECHNOLOGY IS UTILIZED: Mainly European and North American Countries

INFORMATION SOURCES

i.      Article(s):

ii.      Publication(s):

iii.      Internet site (s):

¯  The Australia Renewable Website (Austria Greenhouse Office)

¯  EREN Website

COSTS

i.      Capital or initial costs:

ii.      Operation and maintenance cost:

iii.      Fuel energy costs: 4-8 USc/kWh

CAPACITY: 25kW – >2MW

OUTPUT RANGE: Varied

INPUTS / RAW MATERIALS UTILIZED TO PRODUCE: Wind

ORGANIZATION (S) PROMOTING TECHNOLOGY: European Wind Energy Association, Australia Greenhouse Office, USDOE



Category/ies:Wind Tech.
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