Environmental Engineering Reference
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FIGURE 9.4
Three stacked wind turbines (Darrieus), 4 kW each, next to building. Notice man on top. (Photo
by Coy Harris, American Wind Power Center and Museum. With permission.)
FIGURE 9.5
Eight helical wind turbines, 1 kW, horizontal axis, on top of building, 8 kW total. (Photos by
Kurt Holtz, Lucid Dream Productions. With permission.)
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