Stackable Wind Funnel

The general idea for a stackable wind funnel is that it is able to concentrate windflow to a smaller area, thus reducing the required blade size of any turbine that would want to generate power from it. One nice thing about a stackable design is that you can continually add more wind funnels to the stack, increasing the wind gathering surface area. Intuatively, this could increase the power generated by the turbine (this claim is yet to be tested scientifically).

This design is for a vertica