US20100158705A1 - Device and method for collecting the kinetic energy of a naturally moving fluid - Google Patents

Device and method for collecting the kinetic energy of a naturally moving fluid Download PDF

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Publication number
US20100158705A1
US20100158705A1 US12/531,049 US53104908A US2010158705A1 US 20100158705 A1 US20100158705 A1 US 20100158705A1 US 53104908 A US53104908 A US 53104908A US 2010158705 A1 US2010158705 A1 US 2010158705A1
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fluid
conversion
turbine
pumping
energy
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Paul Guinard
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    • 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
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
    • F03B13/264—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the horizontal flow of water resulting from tide movement
    • 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
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/10—Submerged units incorporating electric generators or motors
    • 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"
    • F03B17/061—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 in flow direction
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/13—Combinations of wind motors with apparatus storing energy storing gravitational potential energy
    • F03D9/14—Combinations of wind motors with apparatus storing energy storing gravitational potential energy using liquids
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/17—Combinations of wind motors with apparatus storing energy storing energy in pressurised fluids
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
    • 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
    • F05B2240/10—Stators
    • F05B2240/13—Stators to collect or cause flow towards or away from turbines
    • F05B2240/133—Stators to collect or cause flow towards or away from turbines with a convergent-divergent guiding structure, e.g. a Venturi conduit
    • 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
    • F05B2240/40—Use of a multiplicity of similar components
    • 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
    • F05B2240/97—Mounting on supporting structures or systems on a submerged structure
    • 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
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • 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
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/71—Adjusting of angle of incidence or attack of rotating blades as a function of flow velocity
    • 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
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources
    • 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
    • F05B2270/00—Control
    • F05B2270/60—Control system actuates through
    • F05B2270/604—Control system actuates through hydraulic actuators
    • 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
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • Such devices for recovering the energy of the swell or of the waves thus typically use means for recovering the energy capable of being carried away by the swell or the waves in a reciprocal movement such as for example bellows or weights.
  • the devices according to the invention actually aim at recovering the energy of a current, the possible variations of which (in direction and/or in velocity) occur during variation periods much longer than the typical variation times of the swell.
  • the (atmospheric or marine for example) currents actually change generally continuously and relatively slowly.
  • a particularly advantageous application of the invention consists of recovering the energy of tidal currents, for which the period, the direction and the force are quite predictable—which is an important factor for guaranteeing efficient and economically viable recovery of energy.
  • wind turbines which allow transformation of the kinetic energy of the wind into mechanical energy.
  • the generated mechanical energy may directly be used or converted into energy of different nature (heat, electricity).
  • hydroelectric machines are known (sometimes called “tidal turbines” or “underwater turbines”) capable of transforming the kinetic energy of a marine current into mechanical or electric energy.
  • first means for energy conversion typically a propeller 10 or another rotor element, bound up with a rotating shaft 100 or to another mobile member, in order to recover the energy of the current and to convert it into a mechanical movement of said mobile member.
  • first conversion means will also be called “recovery means”.
  • These known devices also comprise means 11 for converting the thereby recovered mechanical energy, in order to convert this energy (typically into electric energy).
  • Such means will be called “second” conversion means.
  • the means 11 typically comprise an alternator, the rotor of which is driven by the output shaft 100 of the propeller 10 .
  • They also comprise means 12 for conveying the electricity produced by the alternator towards a site for storing or consuming this electricity.
  • the second conversion means are generally directly coupled to the first conversion means. This is for example the case for a wind turbine, the propeller of which (first conversion means) is directly coupled with an alternator (second conversion means).
  • the first and second directly coupled conversion means are then positioned close to each other in order to provide this coupling.
  • second conversion means such as an electric alternator
  • the installation of second conversion means may prove to be delicate—notably in a wet medium and a fortiori in an immersed location, in particular if power electronics prove to be necessary
  • the transport of electricity produced in situ towards a location for consumption or storage may also represent a constraint—here again notably in the case of production on isolated and/or wet sites or even immersed sites.
  • the energy transfer fluid is capable of polluting the environment.
  • a goal of the invention consists of giving the possibility of getting rid of the drawbacks and constraints mentioned above.
  • Document WO 03/029645 A1 describes an electric power generation system comprising a plurality of turbine units immersed in the sea, each unit including a turbine and a pump coupled to the turbine.
  • the device also comprises remote generator means and a conduit for transporting fluid from each turbine unit as far as the generator means.
  • the transported fluid is sea water taken by the pump.
  • the turbine units are attached to the bottom of the sea and are driven by the flow and ebb of the tide, so that they do not need to be oriented in the direction of motion of the water.
  • Document EP 1 489 299 A1 describes a system for recovering wind energy, comprising a wind rotor and an air compressor capable of being driven by the rotor and of producing liquid air.
  • a conduit allows the liquid air to be conveyed from the compressor to storage tanks or to a sea water desalination station.
  • Document GB 2,340,892 A describes a system comprising “propellers” immersed in sea water, each propeller including a rotor and a water pump driven by the rotor.
  • a high pressure conduit allows the pressurized water to be conveyed from the propellers to a remote receiving station.
  • the receiving station includes a water turbine with which electricity may be generated.
  • Each propeller is able to naturally orienting itself in the direction of the current.
  • Document EP 1 637 733 A1 describes a system for producing electric energy from wind.
  • the system comprises a plurality of wind turbines, each turbine including a rotor and a pump driven by the rotor.
  • the pump is able to receive fluid (in particular water) via a supply conduit and of injecting pressurized fluid into a collecting conduit for conveying the fluid to a pressurized tank.
  • the pressurized fluid is used for operating an electric power generator.
  • This system requires the installation of a closed fluidic circuit comprising a supply conduit on the one hand and a collecting conduit on the other hand for collecting the pressurized fluid produced by each wind turbine and transporting this fluid to the tank.
  • Document DE 10 204 063895 A1 describes a system for recovering wind energy.
  • the system comprises an off-shore installation including a compressor mounted on a mast.
  • the compressor driven by the wind is capable of transmitting pressurized air towards a remote electric generator located on land.
  • the recovery means are always integrated on their installation site to an assembly which comprises other means—for example second energy conversion means.
  • This assembly is subject to the thrust of the current.
  • the (conversion or other) means which are coupled to the recovery means.
  • This is for example the case of an alternator coupled to a propeller—it is then desired to isolate the alternator from the thrust applied by the current on the propeller so that the alternator may rotate independently of the thrust experienced by the propeller.
  • Another goal of the invention thus consists of being able to do without bearing and abutment systems of large dimensions.
  • Another aspect which still should be taken into account concerns the regularity of the energy supply provided by the energy recovery devices.
  • the devices for which exploitation may be contemplated are designed in order to recover energy around rated operating conditions, centered on the most frequent current conditions. Outside these conditions, energy recovery is impossible or at the very least is a problem.
  • the invention is aimed at meeting the goals stated above.
  • the invention proposes a device for collecting kinetic energy of a naturally moving fluid, comprising:
  • the pumping or compression means comprise a multicellular centrifugal pump, the axis of rotation of which is parallel or substantially parallel to the direction of the current.
  • this device does not require the supply of a specific transport fluid.
  • this device does not require the installation of a closed hydraulic circuit.
  • the pumping/compression means exert on the conversion means a force which opposes the thrust necessarily generated by the conversion means.
  • the forces exerted by the pumping/compression means on the one hand and by the conversion means on the other hand may counterbalance each other partly or entirely. This avoids the use of mechanical retaining means for retaining the conversion means relatively to the pumping/compression means, such as bearings or abutments of large dimensions.
  • the invention also relates to a method for collecting the kinetic energy of a naturally moving fluid, comprising steps of:
  • the pumping or compression means comprise a multicellular centrifugal pump, the axis of rotation of which is parallel or substantially parallel to the direction of the current.
  • FIG. 2 schematically illustrates a device for collecting the kinetic energy of a marine current, according to a first embodiment of the invention
  • FIGS. 2A-2C schematically illustrate:
  • FIG. 3 schematically illustrates the device of FIG. 2 in a configuration comprising several conversion apparatuses distributed in different geographical sites
  • FIG. 3A schematically illustrates a configuration for applying the invention in which pressurized fluid may selectively be conveyed to energy conversion means, or energy storage means,
  • FIG. 4 schematically illustrates a device for collecting kinetic energy of wind, according to a second embodiment of the invention
  • FIG. 5 schematically illustrates an alternative of the device of FIG. 4 .
  • FIGS. 6 and 7 schematically illustrate an exemplary apparatus for collecting kinetic energy of wind, such as it may be used in the embodiment of FIGS. 4 and 5 ,
  • FIGS. 8A and 8B schematically illustrate an exemplary apparatus intended to be immersed in order to collect energy from a marine current, such as it may be used in the embodiment of FIG. 2 ,
  • FIG. 9 schematically illustrates an alternative of the device of FIG. 2 .
  • FIGS. 10A-10D schematically illustrate, in a top view, in a sectional view, in a side view and in a rear view, an apparatus intended to be immersed in order to collect energy from a marine current, such as it may be used in the embodiment of FIG. 2 ,
  • FIGS. 11A-11D schematically illustrate, in a top view, in a sectional view, in a side view and in a rear view, a maintenance apparatus coupled with an apparatus for collecting energy from a marine current according to FIGS. 10A-10D ,
  • FIG. 12 is a diagram schematically illustrating the variations of the velocity of a current versus the time of the day, providing an estimation of theoretical power at the output of the device,
  • FIG. 13 schematically illustrates a connection diagram for several apparatuses in a device for collecting kinetic energy from a marine current
  • FIG. 14 schematically illustrates an arrangement which may be provided for selectively directing towards one or more desired recovery means (here TP 1 , TP 2 ) the flow of a current, depending on its instantaneous power, and for exploiting downstream from these recovery means (here PA 1 , PA 2 ) the recovered energy in one or more storage or energy conversion means.
  • desired recovery means here TP 1 , TP 2
  • PA 1 , PA 2 the recovery means
  • the invention thus proposes a device for collecting kinetic energy from a fluid current, comprising:
  • the recovery means typically comprise a propeller or another rotating element. In any case, they comprise a mobile element for recovering the energy from the fluid current and for driving the pumping means.
  • the pumping means driven by the recovery means, pump fluid in the ambient medium and pressurize it in order to allow its transport towards remote energy conversion or storage means.
  • This pressurized fluid thus allows transport of the energy recovered in the current.
  • FIG. 2 illustrates an exemplary embodiment of the invention.
  • the illustrated device 100 comprises a first portion 110 immersed in the sea and a second portion 120 on land, installed for example on one side, at a distance from the immersed portion 110 .
  • the first portion 110 of the device is an apparatus comprising a case 111 , a propeller 112 rotatably mounted relatively to the case 111 , a first transmission shaft 113 capable of being driven into rotation by the propeller 112 , a multiplier mechanism 114 , a second transmission shaft 115 , a multicellular centrifugal pump 116 capable of being driven by the second shaft 115 .
  • the multiplier mechanism is optional.
  • this multiplier mechanism allows the transmission shaft engaged with the pumping means (which here are the multicellular centrifugal pump) to be driven with a high speed of rotation.
  • the case 111 is secured to the bottom of the sea via a securing chain 117 or on a stake or a support itself moored or attached to the ground.
  • the device comprises a venturi system 118 in order to accelerate the velocity of the marine current which drives the propeller 112 .
  • the propeller 112 is located outside the case 111 .
  • this is a propeller of the Kaplan type.
  • the multiplier mechanism 114 , the second transmission shaft 115 and the multicellular centrifugal pump 116 are laid out inside the case 111 .
  • the pump is advantageously made as a multicellular pump, each stage (cell) of which increases the fluid pressure. Details will be given which may relate to such a pump, in another section of this text.
  • the centrifugal pump 116 has a fluid inlet 1161 and a fluid outlet 1162 .
  • the device comprises a fluid conduit 119 for transporting fluid from the outlet 1162 of the pump 116 towards the portion 120 at the bottom of the device.
  • the fluid conduit 119 is provided with a rotary gasket 1191 which allows orientation of the immersed portion 110 of the device, without damaging the conduit 119 .
  • the rotary gasket is here illustrated close to the side, which in reality is at a distance.
  • the immersed portion 110 of the device orients itself depending on the stresses from the current, by pivoting around the rotary gasket 1191 which remains fixed.
  • the second portion 120 of the device comprises a hydraulic turbine 121 of the Pelton or Francis type for example, and an electricity generator 122 such as an alternator coupled to the turbine 121 .
  • the immersed portion 110 of the device is maintained at substantially constant depth.
  • the case 111 is capable of swinging, i.e. of orienting itself in the direction of the marine current by rotating around its anchoring point 1191 at the bottom, so that the stress on the propeller 112 by the marine current is always maximum.
  • the assembly 110 forms a rigid whole and therefore swings with the case.
  • the circulating sea water in the venturi 118 drives the propeller 112 into rotation.
  • the movement of rotation of the propeller 112 is transmitted by means of the first driving shaft 113 , the multiplier mechanism 114 and the second driving shaft 115 to the pump 116 .
  • the multiplier mechanism 114 (which is optional as this has been stated) enables conversion of the movement of rotation of the first shaft 113 into a movement of rotation of the second shaft 115 having a higher speed of rotation.
  • the multiplier mechanism 114 is capable of converting a speed of rotation of the first shaft 113 comprised between 100 and 600 revolutions per minute into a speed of rotation of the second shaft 115 comprised between 3,000 and 6,000 revolutions per minute.
  • the pump 116 causes the pressurized sea water to circulate in the conduit 119 .
  • the sea water is transported through the conduit 119 as far as the bottom portion 120 of the device.
  • the thereby transported sea water is used for feeding the turbine 121 .
  • the turbine 121 is driven into rotation by the pressurized sea water.
  • the turbine 121 in turn drives the generator 122 which converts the movement of rotation of the turbine 121 into an electric current. With the movement of the turbine 121 at a stable regulated speed, an electric current with stable frequency may be provided.
  • the propeller 112 is actuated by the marine current, characterized by large water mass at low pressure, and the pump 116 injects a transport liquid as a small water mass with high pressure.
  • Natural (either marine or air) currents are likely to vary which may prove to be a problem for properly exploiting their energy.
  • the velocity of the marine current varies continually which causes a variation of the kinetic energy which may be collected by the propeller 112 .
  • outlets of the different conduits 119 from each apparatus 110 converge at a concentrator or manifold (both of these terms being understood as being equivalent in this text).
  • FIG. 14 illustrates an exemplary manifold.
  • ⁇ energy conversion or storage means>> are designated means receiving the conveyed pressurized fluid from the pumping means.
  • These means may thus be energy conversion means such as a turbine activated by an intake 119 of pressurized water (example of FIG. 2 ) or by an intake of pressurized air (example of FIG. 4 ).
  • energy conversion means such as a turbine activated by an intake 119 of pressurized water (example of FIG. 2 ) or by an intake of pressurized air (example of FIG. 4 ).
  • Other types of energy conversion means may be contemplated.
  • Such energy conversion means convert pneumatic or hydraulic energy of the pressurized fluid into an energy of a different kind, typically electric energy.
  • the ⁇ energy conversion or storage means>> are energy storage means.
  • these may be a tank of pressurized fluid.
  • These may also be a fluid (notably water) tank, placed in height, wherein the energy is accumulated as a potential energy.
  • a means may be provided such as a three-way valve on the conduit for conveying pressurized fluid in order to selectively direct this fluid towards an energy conversion means, or an energy storage means, depending on what is desired at a given instant.
  • FIG. 3 a This possibility is schematically illustrated in FIG. 3 a.
  • the conduit 119 is provided with a three-way valve which may be controlled in order to send the pressurized fluid towards a turbine 121 , or towards a tank R in height which the fluid may attain by means of its pressure.
  • the tank may then be used for diverting its energy on the one hand, notably when the current of the fluid is low.
  • This possibility provides an additional solution for regulating the operation of the device.
  • FIGS. 2A-2C may advantageously be applied to the pumping means, for example embodied as a multicellular centrifugal pump.
  • FIG. 2A very schematically illustrates the path of the current lines of the fluid (for example water) subject to compression in a multicellular centrifugal pump.
  • the fluid for example water
  • the trajectories of the pressurized water are then illustrated by curved and arrowed lines.
  • Each stage Ei of the multicellular centrifugal pump is delimited by a vane which rotates around the axis of the pump.
  • Each vane comprises a central recessed portion for receiving in proximity to the axis A the water from the previous stage of the pump.
  • the rotation of the vane ejects water through the sole outlet provided by the vane, i.e. a peripheral outlet.
  • the water is thus injected into the following stage, its pressure being increased by passing through the vane.
  • downstream face of the vane has facing the direction parallel to the axis A, a much larger surface than its downstream face (which is recessed in its central portion).
  • the resulting pressure applied on the vane is therefore directed upstream (towards the left of the figures—see FIG. 2B ).
  • the turbine should not rotate too fast (even if the increase provides extra power) since this might damage the device.
  • the power provided by the turbine is proportional to the cube of the velocity of the current.
  • the power absorbed by the pump is proportional to the cube of the speed of rotation of the axis (driven by the turbine). Therefore, the faster the axis rotates, the more powerfully the pump slows down the rotation of this axis—and therefore of the turbine, the axis of which is integral therewith.
  • This arrangement thereby allows self-control of the speed of rotation of the turbine, the runaway of which is prevented in the case of strong current.
  • the energy would be converted on location, into electric energy, for example via an alternator with permanent magnets which, rotating at a constant velocity, is able to generate a current with a stable frequency.
  • FIG. 4 illustrates an example of a device for recovering wind energy.
  • the illustrated device 200 comprises a first portion 210 and a second portion 220 , which may be localized at a distance from the first portion 210 .
  • the first portion 210 comprises a mast 211 attached to the ground, a propeller 212 rotatably mounted relatively to the mast 211 (this propeller may also be positioned in a venturi), a first transmission shaft 213 capable of being driven into rotation by the propeller 212 , a multiplier mechanism 214 , a second transmission shaft 215 , a compressor 216 capable of being driven by the second shaft 215 .
  • the compressor 216 has an air inlet 2161 and an air outlet 2162 .
  • the device further comprises a conduit 219 for transporting compressed air.
  • the conduit 219 is connected at one of its ends to the outlet 2162 of the compressor 216 and at the other one of its ends to an inlet 2261 of a compressed air turbine 226 of the second portion 220 .
  • the second portion 220 comprises a compressed air turbine (or motor) 226 and an electricity generator 222 , such as an alternator coupled to the turbine 226 .
  • the compressed air turbine 226 comprises an air inlet 2261 connected to the conduit 219 through which compressed air is admitted and an air outlet 2262 through which air is discharged into the atmosphere.
  • the air circulating in the atmosphere drives the propeller 212 into rotation.
  • the movement of rotation of the propeller 212 is transmitted by means of the first driving shaft 213 , the multiplier mechanism 214 and the second driving shaft 215 to the compressor 216 .
  • the multiplier mechanism 214 allows conversion of the movement of rotation of the first shaft 213 into a movement of rotation of the second shaft 215 having a higher speed of rotation.
  • the second driving shaft 215 drives the compressor 216 .
  • the compressor 216 picks up air from the atmosphere through the inlet 2161 and injects the picked-up air into the conduit 219 through the outlet 2162 .
  • the air is injected by the compressor 216 at a high pressure.
  • the compressor 216 causes the pressurized air to circulate in the conduit 219 .
  • the air is transported through the conduit 219 as far as to the turbine 226 .
  • the pressurized air drives the turbine 226 into rotation.
  • the turbine 226 in turn drives the generator 222 which converts the movement of rotation of the turbine 226 into an electric current.
  • FIG. 5 schematically illustrates an alternative of the device of FIG. 4 .
  • the device 200 comprises a conduit 219 for transporting compressed air and a conduit 229 for transporting a water+air mixture.
  • the conduits 219 and 229 are connected to each other at a junction 239 immersed in a water expanse and forming an injector of the Giffard type.
  • the second portion 220 comprises a storage tank 223 , a water supply conduit 224 , a hydraulic turbine 221 , of the Pelton or Francis type for example, and an electricity generator 222 , such as an alternator, coupled to the turbine 221 .
  • the storage tank 223 is located in height relatively to the turbine 221 .
  • the tank 223 comprises two compartments 2231 , 2232 and a recessed partition in its lower portion 2233 extending between both compartments.
  • the first compartment 2231 is capable of being supplied with a water+air mixture through the conduit 229 .
  • This first compartment 2231 allows air to escape into the atmosphere, while the water of the first compartment 2231 may flow into the second compartment through the partition 2233 .
  • the air circulating in the atmosphere drives the propeller 212 into rotation.
  • the movement of rotation of the propeller 212 is transmitted by means of the first driving shaft 213 , the multiplier mechanism 214 and the second driving shaft 215 to the compressor 216 .
  • the multiplier mechanism 214 allows conversion of the movement of rotation of the first shaft 213 into a movement of rotation of the second shaft 215 having a higher speed of rotation.
  • the second driving shaft 215 drives the compressor 216 .
  • the compressor 216 picks up air from the atmosphere through the inlet 2161 and injects the picked-up air into the conduit 219 through the outlet 2162 .
  • the air is injected by the compressor 216 at a high pressure.
  • the compressor 216 causes the pressurized air to circulate in the conduit 219 .
  • the air is transported through the conduit 219 as far as the injector 239 .
  • the injector 239 injects into the conduit 229 a mixture comprising air from the conduit 219 and water picked up in the water expanse.
  • the water+air mixture is transported through the conduit 219 up to the storage tank 223 .
  • the water passes from the first compartment 2231 to the second compartment 2232 .
  • the water stored in the second compartment 2232 is used for feeding the turbine 221 .
  • the turbine 221 is driven into rotation by pressurized water from the storage tank 223 .
  • the pressure of the water which feeds the turbine is proportional to the height of the surface of the water contained in the tank relatively to the turbine 221 .
  • the turbine 221 in turn drives the generator 222 which converts the movement of rotation of the turbine 221 into an electric current with a stable frequency.
  • the tank 223 provides regulation of the water flow rate which feeds the turbine 221 so as to regulate the speed of rotation of the turbine 221 .
  • FIGS. 6 and 7 schematically illustrate an exemplary apparatus for collecting kinetic energy of a marine current, such as it may be used for example in the device of FIG. 2 .
  • the apparatus 210 comprises a case 211 , two propellers 212 laid out on either side of the case 211 , a multiplier mechanism 214 , a compressor 216 capable of being driven by the propellers 212 and a tube 218 of a generally convergent-divergent shape forming a venturi.
  • the case 211 and the propellers 212 extend inside the tube 218 .
  • FIGS. 8A and 8B schematically illustrate an exemplary apparatus intended to be immersed in order to collect energy from a marine current, as it may for example be used in the device of FIG. 2 .
  • the apparatus 110 comprises a tube 118 with a convergent-divergent general shape forming a venturi.
  • the apparatus is attached to the bottom of the sea with a securing chain 117 or other means as defined earlier, and a rotary gasket 1191 so that the pressurized water generated by the pump may circulate without any incident in the transport conduit 119 regardless of the orientation of the apparatus.
  • the apparatus subject to an alternating fluid flow comprises a turbine capable of being alternately driven in a first direction and then in a second direction opposite to the first direction.
  • the apparatus comprises a reversing device capable of transmitting to the pump a movement of rotation in a constant direction in spite of the reversals of the direction of rotation of the turbine.
  • the apparatus comprises a turbine comprising a propeller with reversible blades and means for reversing the orientation of the blades of the propeller depending on the direction of the current, so that the turbine rotates according to a constant direction of rotation in spite of the reversals of the current direction.
  • the turbine may be a turbine of the Kaplan type comprising a propeller having blades with variable tilt, so that the tilt of the blades may be adapted to a velocity of the marine current, in order to obtain a substantially constant movement of rotation of the turbine.
  • the tube with a convergent-divergent shape generates a suction effect for sea water and allows acceleration of the velocity of the water which drives the turbine.
  • Means may be provided for compensating the torque generated by the turbine.
  • the case of the apparatus may comprise fins or a rudder-wheel, optionally under control of the current velocity.
  • the apparatus may comprise an even number of turbines, the turbines being associated per pair of turbines, two turbines of a same pair being driven in opposite directions of rotation under the effect of the same marine current.
  • the apparatus is positioned at a sufficiently large depth in order to be safe from draughts of ships likely to be moving on the surface of the sea. Moreover, the apparatus is at a suitable distance from the bottom of the sea so that it may move without encountering natural obstacles.
  • the apparatus may comprise one or more anchors connected to the chain(s) for attaching the apparatus to the bottom of the sea.
  • anchors such as those which are generally used for light ships, buoys of large size or even offshore drilling platforms.
  • the apparatus As the apparatus is submersible, its shape is adapted so as to give it a suitable trim, at a given depth, and according to an orientation depending on the current.
  • a mooring chain or cable 117 provides securing of the apparatus while a conduit 119 provides the conveying of pressurized water towards the land portion of the device.
  • a vertical outlet with a rotating point is provided on the apparatus.
  • the conduit may be held in floatation above the apparatus by suitable means. The conduit is maintained at the floatation level over the whole trajectory followed by the apparatus during its swinging. This arrangement prevents possible interference between the mooring chain or cable and the discharge conduit.
  • the apparatus is immobilized by two mooring lines attached at two ends of the apparatus, which allows the apparatus to be maintained along a direction of the current.
  • this embodiment it is possible to connect to a same conduit several apparatuses, each producing pressurized water.
  • FIG. 9 schematically illustrates an alternative of the device of FIG. 2 .
  • the immersed apparatus 110 comprises means 130 for varying the orientation of the blades of the propeller 112 .
  • These means 130 comprise a mechanism 131 for orienting the blades, notably including a hydraulic actuator 132 , servo-control means 133 for the hydraulic actuator, a tank 134 of pressurized liquid and a hydraulic circuit 135 for feeding the hydraulic actuator 132 .
  • a portion of the pressurized liquid produced by the pump 116 is picked up at the pump outlet 1162 and stored in the tank 134 .
  • the pressurized liquid stored in the tank 134 is intended to feed the mechanism for orienting the blades of the propeller 112 .
  • the control means 133 control the actuator 132 in order to vary the orientation of the blades of the propeller 112 according to the current.
  • the actuator 132 is fed with pressurized liquid via the hydraulic circuit 135 .
  • the means 130 for varying the orientation of the blades of the propeller allow adaptation of the tilt of the blades to a velocity of the marine current, in order to obtain a substantially constant movement of rotation of the propeller 112 and to thereby smooth out the power collected by the latter.
  • the parameters of the regulation program may either be pre-recorded in a memory of the control means 133 or be transmitted from the land portion 120 to the control means 133 , via a wire or waves for example.
  • FIGS. 10A-10D schematically illustrate a device including two apparatuses 110 intended to be immersed in order to collect energy from a marine current.
  • Both apparatuses 110 are positioned in parallel and attached to each other. Both apparatuses 110 are identical, except that they comprise propellers 112 capable of rotating in opposite directions relatively to each other. With this characteristic, it is possible to cancel out the effects of the moments generated by each propeller 112 .
  • venturis 118 are maintained in constant positions relatively to each other and delimit between them a defined and constant space.
  • this space may be used as an area for receiving a maintenance apparatus (maintenance submarine).
  • the maintenance apparatus may come and be positioned in this space and be immobilized relatively to the apparatuses by immobilization means, such as actuators or flaps for example.
  • communication means between the maintenance apparatus and each of the apparatuses 110 may be provided in order to allow the operators to penetrate inside the cases 111 of the apparatuses in order to proceed with possible inspection or repair operations.
  • the maintenance apparatus may also be secured to the apparatuses 110 in order to allow on-site installation or displacement on a selected site of the apparatuses 110 , with view to maintenance or modification of the apparatuses 110 .
  • Lifting or hoisting means may be integrated to the maintenance apparatuses or to the devices allowing the mooring chain or cable 117 of the apparatuses to be dissociated or to be relinked together.
  • assemblies 110 each forming a source of pressurized fluid in order to couple their conduits 119 to one or more devices 120 on land including a turbine and an alternator so that the latter operate under the best selected conditions in order to directly deliver an electric current with a suitable period.
  • FIG. 15 schematically illustrates a diagram for connecting several apparatuses in a device in order to collect kinetic energy from a marine current.
  • the device comprises a manifold receiving pressurized fluid from several sources of type 110 (propeller-pump pairs) TP 1 , TP 2 , TP 3 and delivering according to a pre-established program pressurized fluid to one or more energy conversion means of the type 120 (turbine-alternator pairs PA 1 , PA 2 , PA 3 ), by a suitable valve control procedure.
  • sources of type 110 propeller-pump pairs
  • TP 1 , TP 2 , TP 3 delivering according to a pre-established program pressurized fluid to one or more energy conversion means of the type 120 (turbine-alternator pairs PA 1 , PA 2 , PA 3 ), by a suitable valve control procedure.
  • the manifold may allow all connection combinations between one or more of the sources TP 1 , TP 2 , TP 3 on the one hand with controlled admission rates from each source, and one or more of the energy conversion means PA 1 , PA 2 , PA 3 on the other hand.
  • connections of the manifold may be programmed in order to operate one or more of the energy conversion means.
  • the energy recovery turbines as well as the second energy conversion means, may be dimensioned in order to maximize the global yield of the system while operating the different components in their rated range.
  • FIG. 14 schematically illustrates a configuration in which several sources (here two sources TP 1 , TP 2 ) may be selectively exposed to a current C via current intakes 171 , 172 .
  • the source TP 1 is associated with the current intake 171 , which includes an upstream section 171 a and a downstream section 171 b capable of supplying current to the source.
  • the channel 1720 may divert towards the current intake 171 the flow engaged in the upstream section of the current intake 172 , if the flap 1721 is in the position for closing the channel (a position illustrated in dotted lines).
  • each of the two manifolds may be programmed—for example according to characteristics known beforehand of the current.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
US12/531,049 2007-03-14 2008-03-14 Device and method for collecting the kinetic energy of a naturally moving fluid Abandoned US20100158705A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR0753820A FR2913728A1 (fr) 2007-03-14 2007-03-14 Dispositif et procede pour capter une energie cinetique d'un fluide naturellement en mouvement
FR0753820 2007-03-14
FR0754757 2007-04-27
FR0754757A FR2913729B1 (fr) 2007-03-14 2007-04-27 Dispositif et procede pour capter une energie cinetique d'un fluide naturellement en mouvement
PCT/EP2008/053130 WO2008113771A1 (fr) 2007-03-14 2008-03-14 Dispositif et procede pour capter une energie cinetique d'un fluide naturellement en mouvement

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EP (1) EP2140135B1 (fr)
CN (1) CN101675243A (fr)
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WO (1) WO2008113771A1 (fr)

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WO2013021089A2 (fr) * 2011-08-11 2013-02-14 Sendekia Arquitectura E Ingenieria Sostenible, S.L. Turbine hydraulique à aubes basculantes pour l'utilisation bidirectionnelle de flux
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US20140042750A1 (en) * 2012-08-07 2014-02-13 Creative Minds Solutions, LLC Sea electricity energy production device to produce renewable electricity
GB2512057A (en) * 2013-03-16 2014-09-24 Paul Hales Tidal energy powered pumped storage systems
WO2014164029A1 (fr) * 2013-03-11 2014-10-09 Moncada Rodriguez Oscar Edgardo Centrale électrique fonctionnant en circuit fermé sous l'effet de la gravité de l'eau (wglpp)
US20190170110A1 (en) * 2016-08-10 2019-06-06 Verderg Renewable Energy Limited Bidirectional system and apparatus for generating power
US20190257281A1 (en) * 2018-02-22 2019-08-22 Ralph Dominic RAINA Bi-directional scalable turbine
WO2020127339A1 (fr) * 2018-12-18 2020-06-25 Subsea 7 Norway As Transport d'energie à longue distance sous-marin
US10787783B2 (en) 2016-06-23 2020-09-29 Red to Blue Limited System and method for extracting power from tides
US10876513B2 (en) * 2014-04-02 2020-12-29 Verderg Ltd Turbine assembly
US11045080B2 (en) * 2019-06-28 2021-06-29 Endiatx Ingestible device with propulsion capabilities
CN114776520A (zh) * 2022-05-19 2022-07-22 兰州理工大学 一种savonius透平增压泵
WO2022248912A1 (fr) * 2021-05-26 2022-12-01 Gaia Turbine Sa Ensemble turbine à fluide et procédé d'actionnement d'une turbine à fluide
CN116608092A (zh) * 2023-05-22 2023-08-18 长江三峡集团实业发展(北京)有限公司 一种海上风力发电机组及储能系统
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ITFI20100087A1 (it) * 2010-05-05 2011-11-06 Marco Gatti Impianto per la produzione di energia elettrica, attraverso lo sfruttamento delle correnti marine o fluviali, in grado di ovviare ai problemi rappresentati dalle tempeste, dalle mareggiate e dalla glaciazione della superfice marina o fluviale.
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WO2012044267A1 (fr) * 2010-09-27 2012-04-05 Remizov Pavlo Pavlovich Dispositif hydrodynamique « cascade m »
US9103316B2 (en) * 2011-01-28 2015-08-11 Renetec Co., Ltd. Tidal current power generator
US20140035283A1 (en) * 2011-01-28 2014-02-06 Renetec Co., Ltd. Tidal current power generator
WO2013021089A2 (fr) * 2011-08-11 2013-02-14 Sendekia Arquitectura E Ingenieria Sostenible, S.L. Turbine hydraulique à aubes basculantes pour l'utilisation bidirectionnelle de flux
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WO2013021089A3 (fr) * 2011-08-11 2013-06-13 Sendekia Arquitectura E Ingenieria Sostenible, S.L. Turbine hydraulique à aubes basculantes pour l'utilisation bidirectionnelle de flux
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US20140042750A1 (en) * 2012-08-07 2014-02-13 Creative Minds Solutions, LLC Sea electricity energy production device to produce renewable electricity
WO2014164029A1 (fr) * 2013-03-11 2014-10-09 Moncada Rodriguez Oscar Edgardo Centrale électrique fonctionnant en circuit fermé sous l'effet de la gravité de l'eau (wglpp)
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GB2512057A (en) * 2013-03-16 2014-09-24 Paul Hales Tidal energy powered pumped storage systems
US10876513B2 (en) * 2014-04-02 2020-12-29 Verderg Ltd Turbine assembly
US10787783B2 (en) 2016-06-23 2020-09-29 Red to Blue Limited System and method for extracting power from tides
US20190170110A1 (en) * 2016-08-10 2019-06-06 Verderg Renewable Energy Limited Bidirectional system and apparatus for generating power
US11028817B2 (en) * 2016-08-10 2021-06-08 Verderg Renewable Energy Limited Bidirectional system and apparatus for generating power
US20190257281A1 (en) * 2018-02-22 2019-08-22 Ralph Dominic RAINA Bi-directional scalable turbine
WO2020127339A1 (fr) * 2018-12-18 2020-06-25 Subsea 7 Norway As Transport d'energie à longue distance sous-marin
US11045080B2 (en) * 2019-06-28 2021-06-29 Endiatx Ingestible device with propulsion capabilities
US11622754B2 (en) 2019-06-28 2023-04-11 Endiatx, Inc. Ingestible device with propulsion and imaging capabilities
US11986173B2 (en) 2019-06-28 2024-05-21 Endiatx, Inc. Ingestible device with propulsion capabilities
WO2022248912A1 (fr) * 2021-05-26 2022-12-01 Gaia Turbine Sa Ensemble turbine à fluide et procédé d'actionnement d'une turbine à fluide
CN114776520A (zh) * 2022-05-19 2022-07-22 兰州理工大学 一种savonius透平增压泵
WO2023240373A1 (fr) * 2022-06-17 2023-12-21 RESCAGLIO CAMUS, Carla Centrale hydroélectrique autonome produisant de l'électricité grâce à la différence de pression de l'eau
CN116608092A (zh) * 2023-05-22 2023-08-18 长江三峡集团实业发展(北京)有限公司 一种海上风力发电机组及储能系统

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FR2913729B1 (fr) 2017-03-31
EP2140135A1 (fr) 2010-01-06
FR2913729A1 (fr) 2008-09-19
WO2008113771A1 (fr) 2008-09-25
CN101675243A (zh) 2010-03-17
EP2140135B1 (fr) 2018-05-02
FR2913728A1 (fr) 2008-09-19

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