WO2021004554A1 - Méthode et dispositif de production d'énergie houlomotrice - Google Patents

Méthode et dispositif de production d'énergie houlomotrice Download PDF

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Publication number
WO2021004554A1
WO2021004554A1 PCT/CR2019/050002 CR2019050002W WO2021004554A1 WO 2021004554 A1 WO2021004554 A1 WO 2021004554A1 CR 2019050002 W CR2019050002 W CR 2019050002W WO 2021004554 A1 WO2021004554 A1 WO 2021004554A1
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WO
WIPO (PCT)
Prior art keywords
water
energy
diaphragms
hammers
allows
Prior art date
Application number
PCT/CR2019/050002
Other languages
English (en)
Spanish (es)
Inventor
Pablo Daniel Gonzalez Lucas
Gustavo Adolfo TELLEZ OLAYA
Original Assignee
Lucas Electrohidraulica, S. A.
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 Lucas Electrohidraulica, S. A. filed Critical Lucas Electrohidraulica, S. A.
Priority to PCT/CR2019/050002 priority Critical patent/WO2021004554A1/fr
Publication of WO2021004554A1 publication Critical patent/WO2021004554A1/fr

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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
    • 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
    • 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
    • F03B13/14—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 wave energy
    • 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
    • F03B13/14—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 wave energy
    • F03B13/16—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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • 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
    • F03B13/14—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 wave energy
    • F03B13/16—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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/20—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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" wherein both members, i.e. wom and rem are movable relative to the sea bed or shore
    • 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
    • F03B13/14—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 wave energy
    • F03B13/22—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 wave energy using the flow of water resulting from wave movements to drive a motor or turbine
    • 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
    • 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

Definitions

  • Wave energy is the energy obtained from the movement of waves through the implementation of different technologies. Unlike tidal energy, which is obtained from the rise and fall of the tides, wave energy is generated from the movement of waves. Waves are generated by the effect of the wind on the surface of the seas and oceans. This movement can be used in its rise and fall of the water (what we call waves) and in its flow movement to use it in power generation and also in the production of drinking water.
  • the energy produced from this invention is free of carbon dioxide (C02) emissions.
  • Wave energy has been tried to use for many years. However, to date there has not been much success worldwide due to the fact that the systems in the market do not have sufficient fluid generation capacity and because the devices on the market require large dimensions to produce acceptable energy levels. .
  • the great difficulty in obtaining this type of energy is, on the one hand, the high economic cost and the establishment of a geographically suitable place to confine large volumes of water to natural areas.
  • Wave energy generating methods and devices generate energy through the movement of waves in seas and oceans to generate electrical energy.
  • the Wello Penguin is an inertial device with a counterweight that rotates due to the movement of the wave and that rotating counterweight moves when the wave shakes it, and has a function that, like the Searl device, is made up of solid internal masses or devices. made up of bodies of water.
  • the Ugen (PY105388B) contains a chamber with a column of water and takes advantage of the waves for electricity generation. The Ugen uses wave energy because the device causes the movement of water in oscillating columns where the energy occurs because when the water rises and falls it generates oscillating pressure to generate energy through the pressure it causes.
  • Inertial devices use the energy generated from the amortization of the relative movement between the main body of the device and an internal mass associated with the device that acts as an inertial reference. This mass is solid or liquid and the energy is used to generate electricity.
  • Document US20130033039A1 consists of a device that uses the pendulum movement for the generation of energy based on wave energy, extracting mechanical, rheumatic and hydraulic energy or in combination of them.
  • Document WO2015144956A1 also uses wave energy by means of pendulums that, when moving to both sides supported by gears, generate electricity.
  • the Pelamis system is a system that is made up of several floating cylinders joined by the joints. Thanks to the movement of some cylinders with respect to others, it is resisted by hydraulic joints, which take advantage of the energy to pump high-pressure oil to the accumulators. Water is pumped under high pressure to produce energy.
  • buoys or oscillating water columns Another technology in the state of the art are the buoys or oscillating water columns.
  • the operation for this system and during the movement of the wave, is that a large volume of this water drives a piston in a cylinder that forces the air to rise or fall.
  • the displaced air turns a turbine at the top around one of specific power.
  • the Oyster system allows a clam-shaped machine to anchor itself to the bottom of the sea at about 10 meters from the surface level.
  • the arm opens and swings like a pendulum in response to the movement of the sea and this is how the movement occurs.
  • the present invention is within the field of devices that generate electricity from wave energy.
  • the present invention consists of a method and a device for the generation of electrical energy, hydrogen, drinking water and / or mechanical energy.
  • the invention consists of a power generation method or process and a high-flow, low-pressure wave power generation hydraulic device. It is an articulated system that takes advantage of the difference in height produced by the wave (wave energy) to pump large quantities of seawater at low pressure for the generation of electricity, drinking water, hydrogen, and / or generation of mechanical energy or propulsion of objects floating.
  • the novelty of the system to which this innovation refers is that we use wave energy to raise large amounts of water at very low pressure to later be used in electricity generation, and / or drinking water generation, and / or generation of hydrogen, and / or mechanical energy generation or propulsion of floating objects.
  • This system allows the pumping of seawater with low pressure as a result of the use of the force of the waves on a system, as well as equipment that can generate mechanical energy, electrical energy, propulsion of floating objects, chemical energy, and the generation of water. potable through any existing system (condensation of water from the air, desalination of sea water, etc.).
  • the present innovation does not work with the cylinder movement, it is not a system of buoys or oscillating water columns since it does not work with pistons, in addition, its operation is not in the form of a pendulum nor does it contain an arm for its movement with the waves, so it takes it away from the state of the art and makes it an absolute novelty in its field, being a hydraulic system for generating wave power with high flow and low pressure of seawater.
  • this innovation is designed for the generation of energy and at the same time for the treatment of water that allows meeting the standards of drinking water, or water from human use that does not have the essential characteristics of drinking water, such as swimming pools, fountains, sanitary water, and all types of water or fluid related to this sector. It allows the commercial use of water or fluids for uses in cleaning, refrigeration, sanitary, recreational, artistic and all water or fluid related to this sector.
  • the innovation also allows the agricultural or agro-industrial consumption of water or fluids for agro-industrial uses such as irrigation, fertigation, refrigeration, supply of drinking troughs, cleaning, food processes and all types of water or fluid related to the sector.
  • the innovation also allows the use of water at an industrial and process level for any activity that is required, be it: food, chemical, metalworking, steel, textile, hydroelectric and all types of water or fluid related to the sector. Especially the mining sector.
  • With the flow produced in the system it can be used for the generation of electricity and the generation of the drinking water process, which can be used for the following uses: home, residential, industrial, hospital, educational, commercial, hotel, agricultural , agro-industrial etc.
  • the invention is viable as the equipment generates large flows of water, these can be directed and thus obtain propulsion in the water from the equipment itself or from other vessels or other floating objects.
  • the wave device is a system that allows the impulsion of very large flows of water at very low pressures, taking advantage of the energy of the waves and transmitted to our system.
  • the equipment construction materials are plastics, stainless steels, galvanized steels and / or rubber. These need very little maintenance, and can even remain for many years in sea water without suffering considerable damage. That is why the advantage of low production cost is added to the advantage of having a system that allows driving large flows at very low pressures.
  • This equipment is very low cost compared to other tidal systems offered in the state of the art and makes this equipment can be used for the generation of electrical energy in a very efficient way. It can be used for the generation of mechanical energy and allows the implementation and generation of chemical energy.
  • One of its great advantages is that it is possible to generate drinking water through any existing system (condensation of water from the air, desalination of sea water, distillation, etc.). It is a renewable energy as it does not cause damage to the environment and all the flow produced can be channeled by being transferred in pipes simulating rivers in the sea.
  • a 1:25 scale prototype made up of high-density polyethylene and recycled plastic was built.
  • the prototype is made up of 25 modules connected by a medium clamping system (3) It is a structure similar to a spinal column.
  • Each module is made up of two diaphragm pumps (4) consisting of cylindrical structures with diaphragms (4) at each of its two ends.
  • diaphragm mechanisms pumps (4) are also interconnected by a tube (5) and two check valves (2) placed at each end of the tube (5), this to allow only one direction of flow. Between module and module, it is fixed to a structure that allows its mechanical movement, this fixing also allows the hammer (6) to perform the movement activated by the diaphragms (4).
  • the system captures the energy from the waves and transfers this movement to the hammers (6), which in turn compress and decompress the suction and expiration mechanism.
  • This aspiration and expiration allows the impulse of a flow of water to the turbine that in turn carries out the process of generating electricity to the electrical conduction lines.
  • the suction and expiration mechanism allows the impulse and activation of a compressor, which is then transferred to the condenser and consequently the process of generating drinking water, or other processes, is carried out.
  • One of the main advantages is that if one of the modules has a fault, the system continues to function without any problem.
  • This technology fills an important gap in the field of water treatment, electricity generation and appropriate technology of special relevance for the towns that are near the coasts or islands, asadas, urban and rural aqueducts worldwide.
  • valve system test (2) tests were carried out with different valves to determine the most correct ones that allow the correct operation of the system and its flow direction, as well as the quantity for each module.
  • the hydraulic system tests were carried out to determine its correct operation and functionality both in the suction, expiration and the transfer of the liquid through the system.
  • the system captures the energy coming from the waves and transfers that movement to the hammers, these in turn compress and decompress the suction and expiration mechanism.
  • This aspiration and expiration allows the impulse of a flow of water to the turbine that in turn carries out the process of generating electricity to the electrical conduction lines.
  • the suction and expiration mechanism allows the impulse and activation of a compressor, which is then transferred to the condenser and consequently the process of generating drinking water is carried out.
  • the innovation consists of a system that captures the energy coming from the waves, in their rise and fall to move levers, which we will call hammers (6) to operate large diameter diaphragms (4) that pump large amounts of seawater. This pumping allows the impulse of a very large water flow to the turbine, which in turn carries out the process of generating electricity to the electrical conduction lines, or usable mechanical force, in obtaining drinking water or obtaining chemical energy.
  • a suction filter (1) check valves (2), middle or spinal clamping system (3), diaphragms (4), Pipe (5), Hammers or levers (6), Central axis of the hammer (7), Fastening the mechanism with the hammer (8), Flexible pipe (9), Buoys (10), Anchors (12) and anchor cables ( eleven ).
  • These modules can be composed of two, four, six or more diaphragms (4), placed in individual lines or lines one next to the other, forming a mantle or carpet.
  • the system is anchored to the seabed by anchor cables (11) and Anchors (12) and has a pump box (13).
  • the system provides an innovative operation and the parts of the Kaplan turbine allow the pumped water to be received by the Pressure Pipe (14) and the Butterfly Valve (15), then pass to the casing or snail (16) where the Kaplan impeller (17). The water rotates the impeller and it rotates the Electric Generator (19). Subsequently, the water comes out through the return pipe (18).
  • the modules When the wave rises (crest of the wave), the modules also rise thanks to the material buoyant (10) that raises the equipment in this sector and leaves it lower in another sector (valley of the wave). This difference in height causes the modules that are on the crest to approach below and separate above and this makes the hammers (4) tighten or extend the diaphragms (4), producing a displacement of water in and out of the pump boxes (13). The non-return valves do not let the water back. This generates a net flow of water or pumping of large amounts of water to the transport pipes (9) and then to the turbine and the electric generator or mechanical exploitation mechanism. This mechanism allows the water to be pumped to a net height above the sea.
  • the water flow has an outlet in the upper part of the pumping box (13), later it passes through a check valve (2) to be collected by a system of flexible plastic pipes (9) which channels and transports the water to the Kaplan turbine, which are one of the most efficient types of axial flow reaction water turbines and which are used in small heads with medium and large flow rates, managing to generate electricity or a mechanical force in other mechanisms, the length of the Flexible tubing to the turbine will depend on the specific design of each site where it would be installed.
  • the flow obtained is multiplied by adding modules, obtaining large water flows in small areas at a net usable height.
  • the expansion of the equipment is literally unlimited in practice, since it is possible to add the modules that are necessary to generate the energy that is necessary.
  • the suction filter (1) is the mechanism that is responsible for filtering large solid particles and allows water to enter the check valves and after the suction and expiration mechanisms.
  • the filter has a metal grid in a cylindrical shape with a diameter of 20 cm and a height of 40 cm.
  • the check valves (2) are responsible for allowing the water flow to enter the suction and expiration mechanisms, without generating a re-progress between them and the filters. These valves have the particularity of allowing the flow to enter in only one direction, they are built in bronze or plastic and allow the correct coupling of the pipe.
  • the system of fastening means (3) allows the average mechanical bonding of two or more diaphragms (4) to ensure that the mec - organisms remain together and to ensure the correct rotation of the hammers.
  • This system causes the extended mantle image that expands the generation system to the desired size. It is rectangular in shape and is constructed of galvanized, bronze, or stainless steel.
  • the diaphragms (4) are in charge of sucking and exhaling water in the system and driving it through the pipe. It is made of polymer such as plastic, elastomer or rubber and has a variable diameter depending on where the equipment is installed, generally one meter in diameter each.
  • the pipes (5) are in charge of conducting the water, they are made of plastic and their diameters can be 100 mm, 150 mm, 200 mm, 250 mm, or more.
  • the hammers (6) have the function of compression and decompression of the suction and expiration mechanism, due to the movement of the waves. These are made of plastic and their connection to the middle clamping system (3) is with stainless steel components.
  • the central axis of the hammer (7) is in charge of a union of the hammer (6) to the middle clamping system or spinal column (3), it is made of stainless steel which guarantees its non-corrosion and the correct movement and rotation of the hammer towards the diaphragms (4).
  • the flexible pipe (9) has the function of collecting and distributing the flow of water from the diaphragms (4). These are constructed of flexible plastic material and their diameters can be 150mm, 200mm, 250mm, 300mm and up to 460mm or more.
  • the Buoys (10) are made of material that allows the system to be buoyant and they can be made of plastic or rubber.
  • the anchoring system (1 1) is in charge of keeping the entire system anchored to the seabed or to the coast, this to guarantee the correct operation of the wave-motor system, they can be built in stainless steel or concrete and while the Buoys (10) They guarantee the buoyancy of the system and do not allow it to sink.
  • the cables (12) are made of steel or polymer and allow the attachment of all the equipment to the anchors (1 1).
  • the pumping boxes (13) are in charge of giving rigidity and support to the diaphragms (4) and are made of polymer. They can be cylindrical, rectangular, square or polygonal.
  • This wave energy generation system uses flexible and / or sliding structures in the form of a diaphragm (4) which contract and expand due to the movement exerted by the waves on the hammers that press them.
  • This suction and expiration mechanism (4) changes its volume at the moment it is pressed and when it expands, an aspiration is generated in such a way that it forces the water to rise through the part of the filters, while the check valves (2) they prevent the back of the water.
  • the system is modular and you can add as many modules as the area is available for your operation.
  • the use of this system can occur in coastal areas or the open sea, also so the size of the system is in practice unlimited and is adapted according to the level of energy to be generated.
  • this can be used in various ways including the generation of electrical, mechanical, chemical energy, generation of drinking water to through any existing system (condensation of water from the air, desalination of sea water, etc.) and the propulsion of itself in the water or other floating objects.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

La présente invention concerne une méthode et un dispositif de production d'énergie électrique, d'hydrogène, d'eau potable et/ou d'énergie mécanique ou de propulsion d'objets flottants, au moyen de l'utilisation de l'énergie houlomotrice. L'invention consiste en une méthode ou processus de génération d'énergie et un dispositif hydraulique de production utilisant l'énergie houlomotrice de pompage à haut flux et faible pression. Le système hydraulique d'énergie houlomotrice à haut flux et faible pression est utilisé pour la production d'électricité, d'eau potable, d'hydrogène, et/ou la production d'énergie mécanique ou la propulsion d'objets flottants.
PCT/CR2019/050002 2019-07-09 2019-07-09 Méthode et dispositif de production d'énergie houlomotrice WO2021004554A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CR2019/050002 WO2021004554A1 (fr) 2019-07-09 2019-07-09 Méthode et dispositif de production d'énergie houlomotrice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CR2019/050002 WO2021004554A1 (fr) 2019-07-09 2019-07-09 Méthode et dispositif de production d'énergie houlomotrice

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WO2021004554A1 true WO2021004554A1 (fr) 2021-01-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201090365Y (zh) * 2007-10-30 2008-07-23 刘烈裕 海浪发电装置
WO2017217919A1 (fr) * 2016-06-13 2017-12-21 Novige Ab Appareil de recuperation d'énergie des vagues
CN207647681U (zh) * 2017-12-13 2018-07-24 李春业 一种海浪蓄能发电系统
WO2019043477A1 (fr) * 2017-08-31 2019-03-07 Nitin Kadam Ensemble dispositif de captage de l'énergie d'oscillation des vagues océaniques et son procédé

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201090365Y (zh) * 2007-10-30 2008-07-23 刘烈裕 海浪发电装置
WO2017217919A1 (fr) * 2016-06-13 2017-12-21 Novige Ab Appareil de recuperation d'énergie des vagues
WO2019043477A1 (fr) * 2017-08-31 2019-03-07 Nitin Kadam Ensemble dispositif de captage de l'énergie d'oscillation des vagues océaniques et son procédé
CN207647681U (zh) * 2017-12-13 2018-07-24 李春业 一种海浪蓄能发电系统

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