Why do wind turbines continue to spin even when there’s no wind?

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Living out in west Texas, we have hundreds of wind turbines on the horizon in any given direction. Some days (like today) you could drop a feather straight down without it moving, however all the turbines are spinning. Isn’t that counterproductive?

In: Engineering

7 Answers

Anonymous 0 Comments

If they are spinning there is wind. The turbines are purposely built to be quite tall NOT only so you can put bigger blades on them. The Earth itself causes friction with air moving over it aka wind. As a result wind speeds are lower close to the ground than they are higher up where the influence with friction against the ground is much smaller. It may be wind still on ground level, that doesn’t mean it is also wind still at the height the blades of the turbine are at.

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