Ever see a new design and wonder why it took so long to imagine it? That was my reaction when I read the article in Windpower Engineering & Development today about the Airgenesis turbine design. Their design has a nacelle with two equal-sized rotors at each end which they claim will capture wind at greater capacity factors than conventional designs. So far so good, but the really forehead-smacking idea of theirs is their placement of most of the heavy equipment (gearboxes and generators) in the base at ground level for easy maintenance. They also use multiple generators so they can replace one without having to shut down the turbine. Clever!
The twin rotor idea has its charms as well as this power curve chart demonstrates. I particularly like that this was basically a better design concept not some radical new technology (I like those too). It demonstrates how important creativity is in engineering. Congratulations to Airgenesis!