Wind Energy
Table of Contents
- 1 What is Wind Energy?
- 2 What are the Advantagess?
- 3 What are the Disadvantages?
- 4 Horizontal-Axis Turbines vs Vertical-Axis Turbines
- 5 Applications of Wind Turbines
- 5.1 Land-Based Wind
- 5.2 Offshore Wind
- 5.3 Distributed Winds
- 6 Parts of a Turbine
- 6.1 Generator
- 6.2 Nacelle
- 6.3 Tower
- 6.4 Rotor Blades
- 6.5 Hub
- 6.6 Foundation
- 7 How is the Energy Harnessed?
- 8 Additional Reading
- 9 References
- 9.1 Contributors:
Wind Turbines [1] |
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Wind Turbines [1] |
What is Wind Energy?
Wind power or wind energy is the process of harnessing the energy from the wind to generate mechanical power or electricity. The wind turbines convert the kinetic energy from the wind into mechanical power which in turn is used for specific tasks (grinding grain, pumping water, etc.) or converted into electricity by a generator [5].
What are the Advantagess?
Cost effective (land-based utility-scale wind is one of the lowest-priced sources that costs approximately 1 - 2 cents per kilowatt-hour after production tax credit) [6]
Creates jobs
Enables industry growth
Clean fuel source
Domestic energy source
Sustainable
Can be built on existing farms or ranches (best wind locations are on rural areas)
What are the Disadvantages?
Wind power must still compete with conventional generation sources on a cost basis [6]
Good land-based wind sites are often located in remote locations far away from cities where electricity is needed which requires transmission lines to be built
Might not be the most profitable use of the land
Turbines cause noise and aesthetic pollution
Wind plants negatively impact local wildlife
Horizontal-Axis Turbines vs Vertical-Axis Turbines
Horizontal-Axis Turbines
Contains three propeller blades and operates “upwind” with the turbine pivoting at the top of the tower with the blades facing the wind [2].
Advantages About Horizontal-Axis Turbine
Disadvantages About Horizontal-Axis Turbines
Vertical-Axis Turbines
These types of turbines are omnidirectional which means they do not need to be adjusted to point into the wind to operate [2].
Advantages About Vertical-Axis Turbines
Disadvantages About Vertical-Axis Turbines
Horizontal-Axis Turbines [2] |
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Vertical-Axis Turbines [2] |
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Applications of Wind Turbines
Land-Based Wind
Offshore Wind
Distributed Winds
Land-Based Wind Turbines [2] |
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Offshore Wind Turbines [2] |
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Distributed Wind Turbines [2] |
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