High Efficiency Turbine with Variable Attack Angle Foils
AssigneeLonestar Inventions, L.P.
InventorOsman Ersed Akcasu
Life of this patent
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Abstract
A high-efficiency turbine generates energy from a fluid flow, such as wind or water currents. The turbine has a central axis with a plurality of foils rotatable about the central axis in a general paddlewheel arrangement. Each of the foils has a foil axis parallel to the length of the foil and the central axis, and is rotatable about its foil axis. During operation of the turbine, each foil assumes an attack angle to the direction of the fluid flow with the attack angle dynamically controlled about the foil axis as the foil rotates about the central axis so as to maximize the foil's moment about the central axis.
Claims29
A turbine for generating energy from a fluid flow, comprising:
- a central axis;
- a plurality of foils rotatable about said central axis;
- each of said foils having a length and a foil axis parallel to said length and said central axis, each of said foils rotatable about its foil axis and assuming an attack angle to a direction of said fluid flow during operation of said turbine, said attack angle dynamically controlled about said foil axis as said foil rotates about said central axis so as to maximize said foil's moment about said central axis.
A method of operating a turbine to generate energy from a fluid flow, said turbine having a plurality of foils rotatable about a central axis, each of said foils having a length and a foil axis parallel to said length and said central axis, each of said foils rotatable about its foil axis, said method comprising:
- dynamically controlling an attack angle of each foil to said direction of fluid flow about said foil axis as said foil rotates about said central axis so as to maximize said foil's moment about said central axis.
A turbine for generating energy from a fluid flow, comprising:
- a central axis;
- a plurality of foils rotatable about said central axis, each of said foils having a length and a foil axis parallel to said length and said central axis, each of said foils rotatable about its foil axis;
- and
- means for dynamically controlling an attack angle of each foil to a direction of fluid flow about said foil axis as said foil rotates about said central axis so as to maximize said foil's moment about said central axis.
Dependencies are inferred from the claim text.