Optimization of Vertical Axis Wind Turbine Arrays
Hobson, Garth V.
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Doubling the number of blades from 3 to 6 gives a 2.3 times increase in torque. Running two (3-bladed) VAWTs inward at 1m part gives a less than one percent increase in combined torque. Bringing them closer to 0.5m increases the overall torque by 7%
Energy Academic Group Science and Technology Project