Provided is a wind turbine rotor blade flow guiding device that includes a first portion including a rear surface for facing a surface of a wind turbine rotor blade and a second portion connected to the first portion and extending from the first portion in a first direction along a length, the second portion including a top surface angled at an angle between 90° and 180° with respect to the rear surface of the first portion. The second portion includes a plurality of corrugations extending along the length. The second portion further includes a plurality of openings configured to allow a flow to pass through the second portion. Further disclosed is a wind turbine and a wind turbine rotor blade each including the wind turbine rotor blade flow guiding device.

A high performance hybrid turbine is provided which has an impeller towards which a fluid flow of water, air, or other fluid is conveyed for rotation of the impeller around an axis of rotation. The impeller exploits the thrusts that the fluid flow exerts on the elements constituting the impeller and the thrusts generated by a certain number of airfoils provided inside the elements of the impeller. The high performance hybrid turbine, if used as a wind turbine, can operate at much higher wind speeds than conventional wind turbines.

A wind plant includes at least one wind collector assembly configured to collect a wind stream; at least one booster arm in fluid communication with the at least one wind collector assembly, the booster arm configured to receive the wind stream and to increase the flowrate of the wind stream; and at least one exit conduit, the at least one exit conduit in fluid communication with the booster arm and rotatable with respect to the booster arm. The at least one exit conduit is configured to rotate with respect to the at least one booster arm in response to a thrust force generated by the wind stream exiting the exit conduit. A method of capturing energy from wind is also disclosed.

Provided is a wind turbine rotor blade flow guiding device that includes a first portion including a rear surface for facing a surface of a wind turbine rotor blade and a second portion connected to the first portion and extending from the first portion in a first direction along a length, the second portion including a top surface angled at an angle between 90° and 180° with respect to the rear surface of the first portion. The second portion includes a plurality of corrugations extending along the length. The second portion further includes a plurality of openings configured to allow a flow to pass through the second portion. Further disclosed is a wind turbine and a wind turbine rotor blade each including the wind turbine rotor blade flow guiding device.

The invention is directed to wind turbines operating inside (closed) buildings. These isolated turbines are operated by (naturally) pumping the wind from one side of a building and (mechanically) expelling it from the other side by means of (suction) fans. Alternatively, the turbines can be operated by (mechanically) pumping wind from one side of a building and (mechanically) expelling it from the other side by (suction) pumps that withdraw wind from the building and expel it continually generating a strong air stream in the building having the required velocity for actuating the turbines efficiently. Many adjacent buildings can be constructed, wherein they are connected to each other by tubes that may allow easy transfer of the wind from a building to another. It is only the first building that (naturally or mechanically) receives (natural or mechanical) wind. The last building's fans suck wind and expel it outside generating a strong air stream in all buildings that runs all turbines at the same time and with the same operating capacity.

The invention aims at actuating wind turbines inside (closed) buildings using (natural/mechanical) winds whose velocity can be controlled and the electricity production can be increased. The invention also aims at solving the current problems of wind turbines such as: audiovisual noise, birds killing, the need for speedy and steady wind, and the high cost of building tower to reach the required wind velocity. The present invention provides turbines with the required wind inside closed buildings with the required velocity.

A device to augment air mass flow so an exit airflow will have a higher exit velocity than an inlet airflow has an inner structure having a first open end and a second open end. The inner structure is hollow. The inner structure tapers down from both the first open end and the second open end to a neck area. At least one opening is formed in the neck area. An outer structure has a first open end and a second open end. The outer structure is hollow. A diameter of the first open end of the outer structure and the second open end of the outer structure are approximately equal and allow the inner structure to slide within the outer structure. At least one outer structure opening is formed in a central area of the outer structure.

A wind plant includes at least one wind collector assembly configured to collect a wind stream; at least one booster arm in fluid communication with the at least one wind collector assembly, the booster arm configured to receive the wind stream and to increase the flowrate of the wind stream; and at least one exit conduit, the at least one exit conduit in fluid communication with the booster arm and rotatable with respect to the booster arm. The at least one exit conduit is configured to rotate with respect to the at least one booster arm in response to a thrust force generated by the wind stream exiting the exit conduit. A method of capturing energy from wind is also disclosed.

An apparatus to produce electricity from several renewable energy sources. The device collects wind into a duct, adds energy to the collected wind by adding heat from the sun and building exhaust, and produces electricity via a generator therefrom. The wind capture unit includes a plurality of faces that face all compass directions to avoid having to adjust the device upon shifts in wind direction and speed. The duct includes a tapered portion that serves to increase a speed of inflow air prior to impinging upon a turbofan generator. The device can be mounted on a top of a building and receive building exhaust while supplying the building with electricity. The result is a higher efficiency device with pleasing aesthetics.

A wind plant includes at least one wind collector assembly configured to collect a wind stream; at least one booster arm in fluid communication with the at least one wind collector assembly, the booster arm configured to receive the wind stream and to increase the flowrate of the wind stream; and at least one exit conduit, the at least one exit conduit in fluid communication with the booster arm and rotatable with respect to the booster arm. The at least one exit conduit is configured to rotate with respect to the at least one booster arm in response to a thrust force generated by the wind stream exiting the exit conduit. A method of capturing energy from wind is also disclosed.

A device to augment air mass flow so an exit airflow will have a higher exit velocity than an inlet airflow has an inner structure having a first open, end and a second open end. The inner structure is hollow The inner structure tapers down from both the first open end and the second open end to a neck area. At least one opening is formed in the neck area. An outer structure has a first open end and a second open end. The outer structure is hollow. A diameter of the first open end of the outer structure and the second open end of the, outer structure are approximately equal and allow the inner structure to slide within the outer structure. At least one outer structure opening is formed in a central area of the outer structure.