Tides, Geothermal Heat, and the Big Winds
Wind generators, or “aerogenerators,” are often called by their older name: windmills. These were first seen in the twelfth century, and have been used mainly to drive machinery for farming industry, i.e., grinding grains. Modern wind generators can be seen on farms today. The rotors have generators linked to them, often behind the rotor. Such a generator is small and produces 1 or 2 kW, even in fairly strong winds of 20 km/hr. The modern wind generator on a farm is used to charge batteries which are kept I near its base, and these are used to supply the electrical needs inside the farm house at all times, independent of the momentary wind strength.
KeywordsWind Velocity Hydraulic Fracture Wind Energy Wind Farm Geothermal Energy
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