Energy production 2

How many turbines are needed to provide power for a village?

At peak times a small village requires 850 kW of electrical power. They measure the average wind speed to be 8.0 ms-1. They decide to build several turbines with blade length 45m. How many will they need if the turbines are 25% efficient?

air density = 1.2 kgm-3


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electrical KE PE power rotational translational turbine generator

The wind converts the in the air into motion which is converted to energy by the