DIFFUSER WIND-DRIVEN POWER PLANT WITH LOW NOISE LEVEL Russian patent published in 2013 - IPC F03D5/00 

FIELD: power engineering.

SUBSTANCE: wind-driven power plant with low noise level comprises front and rear fairings fixed on the axis, a rotor located between them in the form of a bushing with blades of the main wind turbine and a circular diffuser accelerator. The circular diffuser accelerator is fixed on fairings by means of fixed stands and blades of a guide vane. Downstream the main wind turbine in direction of the flow there is at least one additional wind turbine. The additional wind turbine is located inside a circular shell, the diameter of which is less than the inner diameter of the circular diffuser accelerator. Blades of the additional wind turbine are fixed on the bushing of the rotor of the main wind turbine. The circular diffuser accelerator is made in the form of three circular wings arranged along the axis one after another and having serially increasing diameters.

EFFECT: invention makes it possible to reduce noise level.