Urban Windpower
Urban Windpower
Urban Windpower
Urban WindpowerWindspire only spins 2-3 times the speed of the wind, faster and more efficient than drag based VAWTs, but much slower than propeller style turbines which typically spin 6-10 times the speed of the wind.
Slower speed means less noise. In fact because of the vertical axis design, sound levels are about 5 decibels above ambient, rendering it virtually inaudible.
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