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Wind Energy

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Available wind resources as a function of yearly average wind velocity and different typical terrains are indicated in the diagram below.

The resources refer to the power present in the wind at level 50 m. Be aware that wind turbine efficiency is typical 20-30%.

Example - Available Wind Resource

The available wind power resource at a sheltered location with average wind velocity 5 m/s is approximately 140 W/m2 from the diagram above. The available energy output per square meter from a wind turbine with efficiency 25% and a operation time 8000 hour a year can be calculated like

(140 W/m2) (25% / 100%) (8000 h/year)

        = 280000 (Wh/m2year)

        = 280 (kWh/m2year)

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Related Topics


Climate, meteorology, solar, wind, emissions and environmental related engineering resources.

Fluid Mechanics

The study of fluids - liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time.

Related Documents

Wind Load vs. Wind Speed

Wind load on surface - Wind load calculator.

Wind Power

Power generation from wind.

Wind Shear

Wind slowed down at surface by trees and obstructions.

Wind Turbine Power Calculator

Online wind turbine calculator.

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