VERTICAL AXIS TURBINE CLUSTERING

摘要

One of the barriers to greater adoption of small turbines is their aerodynamic interference with each other, and hence the need to separate them. Certain types of vertical axis turbines, the drag types, can actually enhance each other's performance when placed close to each other under the right conditions.

主权项

1. A system of a plurality of vertical axis turbines, comprising:
a shaft and at least one curved blade of the drag type including a leading portion and a trailing portion, Turbine 1, a drag turbine of a counterclockwise or clockwise rotation, said turbine possessing a solidity of 20% or greater, solidity being the percentage of the turbine that blocks the wind, that is, solidity=bl/tbd, where bl is blade length, the cross-sectional straight line length, in a line from the shaft, between the inner and outer edges of the at least one rotating blade, and where tbd is turbine blade diameter, that is, the horizontal line through the shaft to the outermost edge of the circular path of the at least one curved blade. Turbine 2, located at a distance from Turbine 1 of less than 3 turbine blade diameters.