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WO2000068567A1 - Hydroturbine - Google Patents

Hydroturbine Download PDF

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Publication number
WO2000068567A1
WO2000068567A1 PCT/NL2000/000315 NL0000315W WO0068567A1 WO 2000068567 A1 WO2000068567 A1 WO 2000068567A1 NL 0000315 W NL0000315 W NL 0000315W WO 0068567 A1 WO0068567 A1 WO 0068567A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbine element
hydroturbine
water
turbine
guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/NL2000/000315
Other languages
French (fr)
Inventor
Louis Worms
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU46275/00A priority Critical patent/AU4627500A/en
Publication of WO2000068567A1 publication Critical patent/WO2000068567A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/062—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction
    • F03B17/065—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having a cyclic movement relative to the rotor during its rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/915—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Definitions

  • the invention relates to a hydroturbine, comprising at least one turbine element which can be disposed under water and is drivable by water flow and connecting means for connecting the turbine element to a water bed.
  • Such a hydroturbine is known from Belgian patent 2060204 in the name of Louis Worms.
  • the known hydroturbine is particularly intended for use in developing countries, for generating electricity, desalinating sea water and pumping irrigation water in places where flowing water is available.
  • a problem of the known hydroturbine is the attachment to the water bed.
  • the turbine element should be anchored to the water bed sufficiently firmly and, in terms of the flow of the water, at an advantageous distance therefrom.
  • this solution is not satisfactory.
  • the forces exerted by the water on the turbine element cause the cables to snap, even if they are of very heavy design. In particular, when the water level rises, the forces exerted on the cables prove to increase considerably.
  • the forces directly exerted on the turbine element by the water flow are already substantial by themselves.
  • the known hydroturbine is meant to function at a water flow of 2-2.5 meter per second, such water flow as for its interplay of forces being comparable to an air flow having a force of about 9.8 Beaufort.
  • a further drawback of the known hydroturbine is that it has a relatively complex construction. Notably because of the high requirements imposed on such turbine regarding life span, operational safety and easy maintenance, it is of great importance that the construction be as simple and robust as possible.
  • the object of the invention is to provide a hydroturbine of the type mentioned in the preamble in which the drawbacks mentioned above are avoided.
  • a hydroturbine according to the invention is characterized in that the connecting means comprise a guide along which the at least one turbine element is movably arranged, such that the distance between the turbine element and the water bed is adjustable in a guided manner.
  • the distance between the turbine element and the water bed can be adjusted in order to choose a desired position in relation to the flow of the water.
  • the distance can be set both actively, i.e. by influencing the buoyancy, or by drive means, and passively, i.e. by means of the force exerted by the water. Further advantageous embodiments of the invention are described in the subclaims.
  • Fig. 1 is a schematic front view of the hydroturbine
  • Fig. 2 is a top plan view along the line I-I shown m Fig. 1;
  • Fig. 3 is a top plan view along the line II-II shown in Fig 1; and Fig 4 is a detail of a blade of the hydroturbine shown in Fig. 1. It is noted that the Figures are only schematic representations of preferred embodiments of the invention. In the Figures, identical or corresponding parts are designated by corresponding reference numerals Fig. 1 shows a hydroturbine 1 with a turbine element 3 which can be arranged under the water surface 2, comprising two blade wheels 4A, 4B.
  • the blade wheels 4A, 4B are coupled and rotatably arranged relative to a substantially vertically extending rotation axis A
  • the blade wheels 4A and 4B are connected to a driven shaft 5 which is rotatably bearing-mounted by means of bearings 6 relative to a dry tank 7 and a ballast tank 8 respectively of the turbine element 3.
  • the blade wheels 4A and 4B of the turbine element 3 can be driven by the water flow represented by the arrow 9, as will be explained hereinafter.
  • the turbine element 3 is connected to the water bed 12 by a rigid guide formed by rails 11
  • the supports 10 are provided with rolling elements 13, such that the turbine element 3 is movable, like an elevator in an elevator shaft, along the guide formed by the rails 11 and that the distance between the turbine element 3 and the water bed is adjustable.
  • the rails 11 are anchored adjacent their bottom side in the water bed 12, for instance by means of concrete blocks 20 By providing side supports 21 and anchor chains 22, the anchoring can be further reinforced In Fig 1, the front and rear rails 11 as shown in Figs 2 and 3 are, for reasons of convenience, not shown
  • the length of the rails 11 is such that the guide extends above the water surface 2.
  • a platform 14 is provided bearing a transmission 15 arranged as a gearbox
  • the transmission 15 is connected to the driven shaft 5 of the turbine element 3 by means of a sleeve coupling, such that upon displacement of the turbine element 3 along the rails 11, the driven shaft 5 can slide relative to the transmission 15
  • the transmission 15 is in turn coupled to a generator 16 for generating electricity provided with regulating means which are not shown
  • the generator 16 can be coupled to a power cable, not shown either, for discharging electricity generated by the generator and/or to batteries for storing generated electricity
  • the buoyancy of the turbine element 3 can be influenced and the turbine element 3 can be moved actively along the guide in order to set the distance between the turbine element 3 and the water bed 12.
  • the turbine element 3 can be positioned at a desired distance relative to the water bed 12.
  • the turbine element 3 can also be moved up to the water surface 2, for instance for inspection or repair works.
  • the turbine element 3 can move upwards along the guide until a new balanced stated is achieved.
  • Possible forces exerted by the water flow 9 on the turbine element 3 can also be absorbed in that the turbine element 3 can be pushed away along the guide in a vertical direction. The last two possibilities involve passive displacement of the turbine element along the guide.
  • the blade wheels 4A and 4B are built up from platforms 17 positioned in parallel planes. Between the platforms 17 blades 18 are mounted which, for reasons of convenience, are not shown in Fig. 1.
  • the blades 18 are pivotally coupled to axes 19 mounted between the platforms.
  • the water flow 9 can cause the blades 18 to pivot between an "open position", in which they extend parallel and in spaced apart relation in flow direction (shown in the top hand part of Fig. 2), and a closed position", in which position the blades 18 adjoin and extend substantially transverse to the water flow 9 (shown in the lower hand part of Fig. 2).
  • the water flow 9 can drive the blade wheel 4A downstream.
  • the blade wheel 4A in Fig. 2 rotates counter-clockwise and the blades 18 being in an open position and having only a low flow resistance, are rotated upstream.
  • the blade wheel 4B shown in Fig. 3 around the axis A at an angle relative to the blade wheel 4A, an even movement of the driven shaft 5 can be generated.
  • Belgian patent specification 2060204 in the name of Louis Worms By manufacturing the blades 18 from a rigid material, it is achieved that in a simple manner in closed position a reliable closure can be effected.
  • the blades 18 are preferably made of a synthetic material, in particular polyethylene. Under water, such synthetic blades 18 have a relatively small moment of inertia and can furthermore provide buoyancy to the turbine element 3. Additionally, synthetic material is highly resistant to wear and polluting influences. It is noted that the invention is not limited to the exemplary embodiment described hereinabove.
  • the turbine element can for instance also be moveable along the guide by means of gliding elements or gear wheels and for moving the turbine element along the guide drive means can be provided, for instance a winch positioned on the platform 14 and connected to the turbine element by means of a cable.
  • the guide can also be arranged with a larger or smaller number of rails and the guide can moreover be designed differently, for instance as one or more guiding cables along which the turbine element is moveable.
  • the guide can also extend to a position below the water surface.
  • the turbine element can also be constructed differently from the presently described blade wheel and the turbine element can comprise a rotation axis placed at a different angle, for instance a horizontal rotation axis.
  • the transmission can be constructed differently, for instance as a fluid coupling and the turbine element may optionally be directly coupled to the generator.
  • the driven shaft can be applied to drive a different type of device than a generator, for instance a pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)

Abstract

Hydroturbine, comprising at least one turbine element (3) which can be disposed under water and driven by the water flow. The turbine element is connected to a water bed by connecting means. The connecting means comprise a guide (11) along which the turbine element is moveably arranged, such that the distance between the turbine element and the water bed is adjustable. Preferably, the guide is of rigid design and the turbine element is moveable along the guide by means of gliding and/or rolling elements.

Description

Title: Hydroturbine
The invention relates to a hydroturbine, comprising at least one turbine element which can be disposed under water and is drivable by water flow and connecting means for connecting the turbine element to a water bed.
Such a hydroturbine is known from Belgian patent 2060204 in the name of Louis Worms.
The known hydroturbine is particularly intended for use in developing countries, for generating electricity, desalinating sea water and pumping irrigation water in places where flowing water is available.
A problem of the known hydroturbine is the attachment to the water bed. In particular, the turbine element should be anchored to the water bed sufficiently firmly and, in terms of the flow of the water, at an advantageous distance therefrom. It is already proposed to anchor the turbine element to the water bed by means of cables having a fixed intermediate distance. However, practice has shown that this solution is not satisfactory. The forces exerted by the water on the turbine element cause the cables to snap, even if they are of very heavy design. In particular, when the water level rises, the forces exerted on the cables prove to increase considerably. Furthermore, the forces directly exerted on the turbine element by the water flow are already substantial by themselves. In this respect, notice is made of the fact that the known hydroturbine is meant to function at a water flow of 2-2.5 meter per second, such water flow as for its interplay of forces being comparable to an air flow having a force of about 9.8 Beaufort.
It is also suggested to position the turbine element on the bed by sinking it by means of a caisson. A drawback of this solution is that the realization of a sufficiently heavy caisson construction is very costly. Further, when using such a construction, it is very complicated to position the turbine element at a larger distance from the water bed.
A further drawback of the known hydroturbine is that it has a relatively complex construction. Notably because of the high requirements imposed on such turbine regarding life span, operational safety and easy maintenance, it is of great importance that the construction be as simple and robust as possible.
The object of the invention is to provide a hydroturbine of the type mentioned in the preamble in which the drawbacks mentioned above are avoided. To that end, a hydroturbine according to the invention is characterized in that the connecting means comprise a guide along which the at least one turbine element is movably arranged, such that the distance between the turbine element and the water bed is adjustable in a guided manner. Thus, it is achieved that the turbine element can be anchored sufficiently firmly to the water bed in a relatively simple manner, and that the distance between the turbine element and the water bed can be set in order to compensate, through displacement, the increase or decrease of the upward or downward forces exerted by the water on the turbine element. Furthermore, the distance between the turbine element and the water bed can be adjusted in order to choose a desired position in relation to the flow of the water. The distance can be set both actively, i.e. by influencing the buoyancy, or by drive means, and passively, i.e. by means of the force exerted by the water. Further advantageous embodiments of the invention are described in the subclaims.
The invention will be further elucidated on the basis of an exemplary embodiment shown in a drawing. In the drawing;
Fig. 1 is a schematic front view of the hydroturbine; Fig. 2 is a top plan view along the line I-I shown m Fig. 1;
Fig. 3 is a top plan view along the line II-II shown in Fig 1; and Fig 4 is a detail of a blade of the hydroturbine shown in Fig. 1. It is noted that the Figures are only schematic representations of preferred embodiments of the invention. In the Figures, identical or corresponding parts are designated by corresponding reference numerals Fig. 1 shows a hydroturbine 1 with a turbine element 3 which can be arranged under the water surface 2, comprising two blade wheels 4A, 4B. The blade wheels 4A, 4B are coupled and rotatably arranged relative to a substantially vertically extending rotation axis A The blade wheels 4A and 4B are connected to a driven shaft 5 which is rotatably bearing-mounted by means of bearings 6 relative to a dry tank 7 and a ballast tank 8 respectively of the turbine element 3. The blade wheels 4A and 4B of the turbine element 3 can be driven by the water flow represented by the arrow 9, as will be explained hereinafter. Via supports 10, the turbine element 3 is connected to the water bed 12 by a rigid guide formed by rails 11 The supports 10 are provided with rolling elements 13, such that the turbine element 3 is movable, like an elevator in an elevator shaft, along the guide formed by the rails 11 and that the distance between the turbine element 3 and the water bed is adjustable. The rails 11 are anchored adjacent their bottom side in the water bed 12, for instance by means of concrete blocks 20 By providing side supports 21 and anchor chains 22, the anchoring can be further reinforced In Fig 1, the front and rear rails 11 as shown in Figs 2 and 3 are, for reasons of convenience, not shown
The length of the rails 11 is such that the guide extends above the water surface 2. Above the water surface 2 between the rails 11, a platform 14 is provided bearing a transmission 15 arranged as a gearbox The transmission 15 is connected to the driven shaft 5 of the turbine element 3 by means of a sleeve coupling, such that upon displacement of the turbine element 3 along the rails 11, the driven shaft 5 can slide relative to the transmission 15 The transmission 15 is in turn coupled to a generator 16 for generating electricity provided with regulating means which are not shown The generator 16 can be coupled to a power cable, not shown either, for discharging electricity generated by the generator and/or to batteries for storing generated electricity By pumping water into or out of the ballast tank, the buoyancy of the turbine element 3 can be influenced and the turbine element 3 can be moved actively along the guide in order to set the distance between the turbine element 3 and the water bed 12. Thus, with respect to the water flow, the turbine element 3 can be positioned at a desired distance relative to the water bed 12. In addition, the turbine element 3 can also be moved up to the water surface 2, for instance for inspection or repair works. Moreover, starting from a state of equilibrium, when the level of the water surface 2 rises, the turbine element 3 can move upwards along the guide until a new balanced stated is achieved. Possible forces exerted by the water flow 9 on the turbine element 3 can also be absorbed in that the turbine element 3 can be pushed away along the guide in a vertical direction. The last two possibilities involve passive displacement of the turbine element along the guide.
With reference to Figs. 2, 3 and 4, the working principle of the hydroturbine 1 will be explained. The blade wheels 4A and 4B are built up from platforms 17 positioned in parallel planes. Between the platforms 17 blades 18 are mounted which, for reasons of convenience, are not shown in Fig. 1. The blades 18 are pivotally coupled to axes 19 mounted between the platforms. The water flow 9 can cause the blades 18 to pivot between an "open position", in which they extend parallel and in spaced apart relation in flow direction (shown in the top hand part of Fig. 2), and a closed position", in which position the blades 18 adjoin and extend substantially transverse to the water flow 9 (shown in the lower hand part of Fig. 2). By means of the blades 28, being in a closed position and having a high flow resistance, the water flow 9 can drive the blade wheel 4A downstream. As a result, the blade wheel 4A in Fig. 2 rotates counter-clockwise and the blades 18 being in an open position and having only a low flow resistance, are rotated upstream. By positioning the blade wheel 4B shown in Fig. 3 around the axis A at an angle relative to the blade wheel 4A, an even movement of the driven shaft 5 can be generated. For a more detailed description of the working principle of the blade wheels, reference is made to Belgian patent specification 2060204 in the name of Louis Worms. By manufacturing the blades 18 from a rigid material, it is achieved that in a simple manner in closed position a reliable closure can be effected. It is noted that when the blades 18 arrive in the closed position, the intervening water prevents the rigid blades touching each other too hard. The blades 18 are preferably made of a synthetic material, in particular polyethylene. Under water, such synthetic blades 18 have a relatively small moment of inertia and can furthermore provide buoyancy to the turbine element 3. Additionally, synthetic material is highly resistant to wear and polluting influences. It is noted that the invention is not limited to the exemplary embodiment described hereinabove. The turbine element can for instance also be moveable along the guide by means of gliding elements or gear wheels and for moving the turbine element along the guide drive means can be provided, for instance a winch positioned on the platform 14 and connected to the turbine element by means of a cable. The guide can also be arranged with a larger or smaller number of rails and the guide can moreover be designed differently, for instance as one or more guiding cables along which the turbine element is moveable. The guide can also extend to a position below the water surface. The turbine element can also be constructed differently from the presently described blade wheel and the turbine element can comprise a rotation axis placed at a different angle, for instance a horizontal rotation axis. Furthermore, the transmission can be constructed differently, for instance as a fluid coupling and the turbine element may optionally be directly coupled to the generator. Apart from that, the driven shaft can be applied to drive a different type of device than a generator, for instance a pump. Such variants will be clear to the skilled person and are understood to fall within the scope of the invention as stated in the following claims.

Claims

Claims
1. A hydroturbine, comprising at least one turbine element which can be disposed under water and driven by the water flow and connecting means for connecting the turbine element to a water bed, characterized in that the connecting means comprise a guide along which the turbine element is moveably arranged, such that the distance between the turbine element and the water bed is adjustable.
2. A hydroturbine according to claim 1, characterized in that the connecting means comprise at least one rigid guide along which the turbine element is moveable.
3. A hydroturbine according to claim 2, characterized in that the turbine element is moveable along the guide by means of gliding and/or rolling elements.
4. A hydroturbine according to any one of the preceding claims, characterized in that the turbine element is provided with adjustable ballast means for setting the distance between the turbine element and the water bed by changing the upward force exerted on the turbine element.
5. A hydroturbine according to any one of the preceding claims, characterized in that the turbine element comprises at least one blade wheel.
6. A hydroturbine according to claim 5, characterized in that the blade wheel comprises a number of pivotally mounted blades made of a rigid material.
7. A hydroturbine according to claim 6, characterized in that the blades are substantially manufactured from synthetic material.
8. A hydroturbine according to any one of claims 5 - 7, characterized in that the at least one blade wheel is arranged for rotation relative to a substantially vertically extending rotation axis.
9. A hydroturbine according to any one of the preceding claims, characterized in that the turbine element comprises a driven shaft coupled to a generator or pump disposed above the water surface.
0. A hydroturbine according to claim 9, characterized in that there are further provided transmission means and/or control means arranged above the water surface.
PCT/NL2000/000315 1999-05-11 2000-05-11 Hydroturbine Ceased WO2000068567A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46275/00A AU4627500A (en) 1999-05-11 2000-05-11 Hydroturbine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1012037A NL1012037C2 (en) 1999-05-11 1999-05-11 Hydro turbine.
NL1012037 1999-05-11

Publications (1)

Publication Number Publication Date
WO2000068567A1 true WO2000068567A1 (en) 2000-11-16

Family

ID=19769177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2000/000315 Ceased WO2000068567A1 (en) 1999-05-11 2000-05-11 Hydroturbine

Country Status (3)

Country Link
AU (1) AU4627500A (en)
NL (1) NL1012037C2 (en)
WO (1) WO2000068567A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400632A (en) * 2003-04-16 2004-10-20 Anthony Thomas Morse Subsea turbine energy generation apparatus
WO2004109097A1 (en) * 2003-06-16 2004-12-16 Willi Henkenhaf Fluid activated wheel/generator pair
GB2527311A (en) * 2014-06-17 2015-12-23 Blue Tidal Energy Ltd Water turbine
EP3705715A1 (en) * 2019-03-05 2020-09-09 Mataro Holding BV Systems and methods for generating energy from a liquid flow

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1406031A (en) * 1920-11-08 1922-02-07 Kievlan George Michal Current motor
US3922012A (en) * 1974-02-28 1975-11-25 Harry Herz Power generator
US4086023A (en) * 1975-10-08 1978-04-25 Concept Development Institute, Inc. Windmill
GB1508796A (en) * 1975-04-29 1978-04-26 Hill L Rotary apparatus
US4095422A (en) * 1976-05-28 1978-06-20 Aquatech Co., Ltd. Vertical-axis composite swinging-blade water wheel
CH632807A5 (en) * 1979-10-11 1982-10-29 Roger Berclaz Hydraulic drive wheel with vertical axis
US5462462A (en) * 1992-06-04 1995-10-31 Woodley; Frank Modified propeller blade
WO1999002853A1 (en) * 1997-07-07 1999-01-21 Sinvent As Stream turbine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1406031A (en) * 1920-11-08 1922-02-07 Kievlan George Michal Current motor
US3922012A (en) * 1974-02-28 1975-11-25 Harry Herz Power generator
GB1508796A (en) * 1975-04-29 1978-04-26 Hill L Rotary apparatus
US4086023A (en) * 1975-10-08 1978-04-25 Concept Development Institute, Inc. Windmill
US4095422A (en) * 1976-05-28 1978-06-20 Aquatech Co., Ltd. Vertical-axis composite swinging-blade water wheel
CH632807A5 (en) * 1979-10-11 1982-10-29 Roger Berclaz Hydraulic drive wheel with vertical axis
US5462462A (en) * 1992-06-04 1995-10-31 Woodley; Frank Modified propeller blade
WO1999002853A1 (en) * 1997-07-07 1999-01-21 Sinvent As Stream turbine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400632A (en) * 2003-04-16 2004-10-20 Anthony Thomas Morse Subsea turbine energy generation apparatus
GB2400632B (en) * 2003-04-16 2006-04-26 Anthony Thomas Morse Subsea energy generation
WO2004109097A1 (en) * 2003-06-16 2004-12-16 Willi Henkenhaf Fluid activated wheel/generator pair
GB2527311A (en) * 2014-06-17 2015-12-23 Blue Tidal Energy Ltd Water turbine
EP3705715A1 (en) * 2019-03-05 2020-09-09 Mataro Holding BV Systems and methods for generating energy from a liquid flow
BE1027092B1 (en) * 2019-03-05 2020-10-05 Mataro Holding Bv Systems and methods for generating energy from a fluid stream

Also Published As

Publication number Publication date
AU4627500A (en) 2000-11-21
NL1012037C2 (en) 2000-11-14

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