WHAT’S BLOWING IN US WIND POWER
- Jun 18, 2019 11:07 pm GMT
This item is part of the Special Issue - 2019-06 - US Wind Power, click here for more
Few people are aware of the tremendous energy in wind. To illustrate, with a 100 foot diameter hoop placed in a continuous 12 MPH wind, the amount of energy passing through that hoop in one year is 600,000 Kilowatt hours or a continuous 90 horsepower. Double the wind velocity to 24 MPH and the amount of energy passing through the hoop is eight times greater at 4,800 megawatt hours, equivalent to 720 horsepower.
There is enough energy in the wind to power all of civilization’s needs 100 times over. The energy in wind is the mass weight of the air and its velocity. In the example above, the mass weight of the air passing through that 100 foot diameter hoop at 12 MPH is an incredible 10,400 pounds (5 tons) per second - this is not a typo. (You can easily calculate this yourself knowing the weight of air being .075 lbs/cu. ft.)
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