High efficiency turbine and method of generating power
The present invention is directed to a turbine comprising a pair of opposing end discs concentrically aligned with a central axis of the turbine and a plurality of blades extending between the end discs. At least one end discs is adapted for engaging with a generator for generating power. The plurality of blades rotates in a single direction when exposed to fluid flow and thereby rotates the pair of opposing end discs. The plurality of blades are interconnected by at least one faired ring oriented parallel to the pair of opposing end discs and intersecting the plurality of blades, wherein the at least one faired ring is in concentric alignment with the central axis. The present invention further comprises a method for generating power comprising engaging the turbine with a generator to create a turbine generator unit and deploying the turbine generator unit within a fluid flow.
1. A turbine comprising:
a) a pair of opposing end discs bounding the turbine at both ends, wherein the pair of opposing end discs is in concentric alignment with a central axis and wherein at least one opposing end disc is adapted for engaging with a generator;
b) a plurality of blades that rotate in a single direction when exposed to fluid flow wherein: i) the plurality of blades extend between the pair of opposing end discs and are disposed evenly about the central axis, ii) wherein the rotating plurality of blades causes the pair of opposing end discs to rotate, iii) wherein the plurality of blades define a spiral wound trajectory around the central axis, the spiral wound trajectory having a variable radius along the length of the turbine such that a distance measured from the plurality of blades to the central axis is greater at the center of the turbine than at either end, and iv) wherein the plurality of blades further comprise an airfoil-shaped cross section having a non-zero angle of attack, which angle is defined by an intersection of the chord of the airfoil-shaped cross section and a tangential line abutting the same cross section and oriented in the direction of relative fluid flow; and
c) at least one faired ring oriented parallel to the pair of opposing end discs and intersecting the plurality of blades, wherein the at least one faired ring is in concentric alignment with the central axis.
2. The turbine of claim 1 wherein the plurality of blades is at least two blades spiraling around the central axis.
3. The turbine of claim 1 wherein the angle of attack varies along the length of the turbine.
4. The turbine of claim 1 wherein a projection of the trajectory of the plurality of blades is barrel shaped such that a radial distance between the plurality of blades and the central axis is smaller at the ends of the turbine than at any point between the ends.
5. The turbine of claim 1 wherein the cumulative sweep of the plurality of blades traverses one or more 360 degree turns about the central axis.
6. The turbine of claim 1 wherein the turbine operates while submerged in a fluid gas and/or fluid liquid.
7. The turbine of claim 1 wherein the plurality of blades is manufactured from a durable lightweight material.
8. The turbine of claim 1 , further comprising a central shaft extending along the central axis, wherein the central shaft engages with the pair of opposing end discs.
9. The turbine of claim 1 , further comprising a shaft disposed between one of the pair of opposing end discs and the generator.
10. A method for generating power comprising:
a) providing a pair of opposing end discs, wherein the pair of opposing end discs is in concentric alignment with a central axis and wherein at least one opposing end disc is adapted for engaging with a generator;
b) providing a plurality of blades that rotate in a single direction when exposed to fluid flow wherein: i) the plurality of blades extend between the pair of opposing end discs and are disposed evenly about the central axis, ii) wherein the rotating plurality of blades causes the pair of opposing end discs to rotate, iii) wherein the plurality of blades define a spiral wound trajectory around the central axis, the spiral wound trajectory having a variable radius along the length of the turbine such that a distance measured from the plurality of blades to the central axis is greater at the center of the turbine than at either end, and iv) wherein the plurality of blades further comprise an airfoil-shaped cross section having a non-zero angle of attack, which angle is defined by an intersection of the chord of the airfoil-shaped cross section and a tangential line abutting the same cross section and oriented in the direction of relative fluid flow;
c) providing at least one faired ring oriented parallel to the pair of opposing end discs and intersecting the plurality of blades, wherein the at least one faired ring is in concentric alignment with the central axis;
d) providing a generator for engaging with at least one of the pair of opposing end discs;
e) attaching the generator and the plurality of blades to the pair of opposing end discs to create a turbine generator unit assembly; and
f) deploying the turbine generator unit within a fluid flow.
11. The method of claim 10 , further comprising harnessing power from the generator via transmission lines extending between the turbine generator unit and a base power station.
12. The method of claim 10 wherein the plurality of blades is at least two blades spiraling around the central shaft.
13. The method of claim 10 wherein the angle of attack varies along the length of the turbine.
14. The method of claim 10 wherein a projection of the trajectory of the plurality of blades is barrel shaped such that a radial distance between the plurality of blades and the central axis is smaller at the ends of the turbine than at any point between the ends.
15. The method of claim 10 wherein the cumulative sweep of the plurality of blades traverses one or more 360 degree turns about the central axis.
16. The method of claim 10 wherein the spiral wound, variable radius trajectory of the plurality of blades reduces stress and strain under load conditions.
17. The method of claim 10 wherein the turbine operates while submerged in a fluid gas and/or fluid liquid.
18. The method of claim 10 wherein the plurality of blades is manufactured from a durable lightweight material.
19. The method of claim 10 , further comprising a central shaft extending along the central axis, wherein the central shaft engages with the pair of opposing end discs.
20. The method of claim 10 , further comprising a shaft disposed between one of the pair of opposing end discs and the generator.