A wind turbine with a rotor diameter of 50 m is rated at 2500 kW at a hub height

Question

A wind turbine with a rotor diameter of 50 m is rated at 2500 kW at a hub height wind speed of 10 m/s. It has a cut-in wind speed of 4 m/s and a cut-out speed of 21 m/s. Assume that this machine is located at a site where the mean wind speed is 7 m/s and that a Weibull wind speed distribution can be used with a shape factor of 2.2. a)Calculate the number of hours per year that the wind is below the cut-in speed. b)Calculate the number of hours per year that the machine will be shut down due to wind speeds above the cut-out velocity. c)Calculate the energy production (kWh/yr) when the wind turbine is running at rated power.

Explanation / Answer

Please give the values.. of wind speed of m/s and ..cut-out speed of m/s... and please rate me.. :)

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