WO1986001259A1 - Production d'energie - Google Patents

Production d'energie Download PDF

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Publication number
WO1986001259A1
WO1986001259A1 PCT/US1984/001309 US8401309W WO8601259A1 WO 1986001259 A1 WO1986001259 A1 WO 1986001259A1 US 8401309 W US8401309 W US 8401309W WO 8601259 A1 WO8601259 A1 WO 8601259A1
Authority
WO
WIPO (PCT)
Prior art keywords
chambers
working fluid
chamber
accumulator
water
Prior art date
Application number
PCT/US1984/001309
Other languages
English (en)
Inventor
Jiun-Tsong Wu
Original Assignee
Wu Jiun Tsong
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 Wu Jiun Tsong filed Critical Wu Jiun Tsong
Priority to PCT/US1984/001309 priority Critical patent/WO1986001259A1/fr
Priority to EP84903248A priority patent/EP0190126A1/fr
Publication of WO1986001259A1 publication Critical patent/WO1986001259A1/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
    • 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
    • F03B13/141—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 with a static energy collector
    • F03B13/142—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 with a static energy collector which creates an oscillating water column
    • 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

  • the wave motion of water in nature contains energy. This energy from undulating water can be collected and utilized with suitable method. It is an object of this invention to disclose a device for collecting such energy.
  • the invention is applicable to electric power generation from ocean, lake, river, or other water occuring in nature.
  • the energy collection device uses a working fluid, or fluids, as a medium or media for transmitting pressure and storing energy.
  • the working fluid is pumped from a state of lower energy to a state of higher energy by the wave motion of the water.
  • the fluid is either a liquid or a gas.
  • the gas is compressed to a higher pressure, or the liquid is lifted to a higher elevation by the action of the undulating water.
  • the working fluid can then be used to drive a turbine, a hydraulic motor, or other energy conversion machine.
  • the device can be used for the purpose of compressing gases or transporting liquids.
  • the energy collection device is supported by a structure fixed to the earth, or a float, or a ship.
  • the device consists of several pumping units and accumulators interconnected together. Each unit is able to pump the working fluid with certain increase of energy in the form of elevation and pressure. Due to the limited amplitude of the wave motion, the increase of fluid elevation and pressure in one pumping stage is usually relatively small. It is often desirable to have larger increase in elevation or pressure.
  • the working fluid is therefore pumped through several pumping units and accumulators in succession to gain the desirable pressure for the gas, or the desirable elevation for the liquid.
  • the working fluid used may be a gas, such as the air, or certain kind of liquid which is preferably insoluble in water.
  • One of the functions of the working fluid is to store energy. If the working fluid which stores energy is a liquid, reservoirs are used as the accumulators.
  • the accumulator is a storage tank which is preferably vented to the atmosphere and is capable of holding the liquid at certain elevation. If the working fluid which stores energy is a gas, gas containers are used as the accumulators.
  • the accumulator is a storage tank capable of holding the working fluid under certain steady pressure.
  • the pumping unit has a chamber which is connected with the accumulators and also subjected to pressure variation from the undulating water.
  • the chamber has an intake port and an exhaust port. The two ports may also be combined into one for both intake and exhaust functions.
  • the port or ports are connected to the accumulators.
  • the chamber has an outlet to the undulating water. The space formed by the chamber and the outlet is partially filled with the working fluid and partially filled with the water. The outlet transmits the hydraulic pressure of the water to the chamber.
  • the fluid should remain separated from the water.
  • the separation of the working fluid from the water is effected by their difference of densities and their mutual insolubility.
  • the undulating water in this invention acts like a piston which pumps and seals the working fluid in the chamber.
  • the working fluid is partitioned from the water with a flexible membrance. The membrance transmits the hydraulic pressure.
  • the separation of the working fluid from the water is effected by the difference of their densities and the impermeability of the membrance.
  • the working fluid is partitioned from the water by a piston sliding in a cylindrical wall.
  • the fluid in the chamber is subjected to the hydraulic pressure of the water wave with minimal mechanical means. It is an object of this invention to disclose a pumping mechanism that is efficient and easy to build by allowing the water pressure to act on the working fluid as directly as possible.
  • the pumping units and the accumulators are interconnected through conduits. Valves are provided in the interconnections to regulate the flows of the working fluid so that it is pumped in the direction of increasing elevation or pressure.
  • the valve is a check valve that operates on pressure difference and allows the fluid to flow in one direction only.
  • Each pumping unit is connected to two accumulators, one as a supplier and the other as a receiver of the working fluid.
  • the accumulator on the receiving side has a higher pressure or elevation than the accumulator on the supplying side.
  • Each accumulator, except the first and the last ones, is connected to two pumping units and serves as a supplier of working fluid for one pumping unit and as a receiver for the other pumping unit.
  • the last accumulator is connected to only one pumping unit and serves as the final storage place before ⁇ the working fluid is utilized. It is preferably larger in size than other accumulators.
  • the first accumulator is also connected to only one pumping unit and preferably larger in size.
  • a turbine is connected between the last a ⁇ d the first accumulators to generate mechanical power. If the air is used as the working fluid, the first accumulator may be omitted entirely.
  • the first pumping unit is then allowed to receive the air from the atmosphere through a check valve on the intake side, and the turbine discharges the air directly into the atmosphere.
  • the directions of the check valves are chosen so that the fluid can flow from the accumulator on the supply side to the pumping chamber, and from the pumping chamber to the accumulator on the receiving side. Fluid flow in the reversed direction is prevented.
  • the elevations of the liquid or the pressures of the gas vary from one accumulator to another. As the fluid is pumped successively, the elevation or the pressure is gradually increased.
  • the difference of hydrostatic pressure between two points is equal to the product of the fluid density, the gravitational acceleration, and the elevation difference between the two points.
  • the sum of the pressure and the product of density, gravitational acceleration, elevation is a constant at any point of the fluid and is equivalent to the fluid energy density.
  • the pumping chamber Since the pumping chamber is subjected to the pressure from the wave motion of the water, the pressure at certain point inside the chamber of the pumping unit varies with time.
  • the result of this variation combined with the regulations provided by the valves, is a pumping action. It allows the working fluid to enter the chamber when the chamber pressure drops below certain level and is overcome by the pressure in the accumulator on the supply side. It also allows the working fluid to leave the chamber when the chamber pressure increases and overcomes the pressure in the accumulator on the receiving side.
  • Each pumping unit is thus capable of pumping the working fluid from the supplying accumulator to the receiving accumulator with certain pressure increase. Its operation is very similar to an ordinary reciprocal pump with piston and cylinder.
  • the chamber serves as the cylinder and the water as the piston.
  • OMPI The pressure increase by a single pumping unit is limited by the amplitude of the water wave.
  • the pumping units and the accumulators are connected together in a chain, they form a pumping system which produces a total pressure difference for the working fluid greater than a single pumping unit is capable of.
  • Fig. 1 shows a power generation system utilizing a gas as the working fluid.
  • Fig. 2 shows a power generation system utilizing a liquid heavier than water as the working fluid.
  • Fig. 3 shows a power generation system utilizing a gas as the primary working fluid and a liquid lighter than water as the secondary working fluid.
  • Fig. 4 shows a power generation system utilizing a gas as the primary working fluid and a liquid heavier than water as the secondary working fluid.
  • Fig. 5 shows a power generation system utilizing a liquid as the primary working fluid and a gas as the secondary working fluid.
  • Fig. 6 shows a power generation system utilizing a heavy liquid as the primary working fluid and a liquid heavier than water but lighter than the primary working fluid as the secondary fluid.
  • Fig. 7 shows a power generation system which incorporates floats and screens in the pumping units.
  • Fig. 8 shows a power generation system which incorporates a flexible membrance in each pumping unit.
  • Fig. 9 shows a power generation system which incorporates a piston in each pumping unit.
  • Fig. 10 shows a power generation system with manifold connections.
  • Fig. 11 shows a power generation system with insulation.
  • Fig. 12 shows a power generation system with heat exchange device.
  • Fig. 13 shows a single stage system utilizing a gas as the working fluid.
  • Fig. 14 shows a single stage system utilizing a liquid as the primary working fluid and a gas as the secondary working fluid.
  • Fig. 15 shows a system utilizing a gas as the working fluid which has the pumping units connected in parallel.
  • Fig. 16 shows a system utilizing a liquid as the primary working fluid and a gas as the secondary working which has pumping units connected in parallel.
  • the first form of this invention is disclosed as follows:
  • Each of the first and the second embodiments uses one working fluid.
  • Each of the third through the sixth embodiments uses two working fluids, henceforth called the primary and the secondary fluids.
  • the primary fluid is used to store the energy.
  • the secondary fluid is confined between the primary fluid and the undulating water and is used to transmit pressure and maintain proper pressure bias in the pumping chamber.
  • the first embodiment uses a working fluid of density lower than that of the water.
  • the second embodiment uses a working fluid of density higher than that of the water.
  • the third embodiment uses a secondary working fluid with a density higher than that of the primary fluid, but lower than that of the water.
  • the fourth embodiment uses a secondary working fluid with a density higher than that of the
  • the fifth embodiment uses a secondary working fluid with a density lower than that of the primary fluid, and also lower than that of the water.
  • the sixth embodiment uses a secondary working fluid with a density lower than that of the primary fluid but higher than that of the water.
  • the chamber and the outlet are combined together to form a drum shape space with an opening.
  • the outlet extends from the chamber to reach certain depth in the water. To ensure the working fluid stays inside the device, it is preferable to have the opening of the outlet face up if the secondary fluid is denser than the water, and face down if the secondary fluid is lighter than the water.
  • FIG. 1 illustrates the first embodiment.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the working fluid.
  • Three pumping chambers 2a, 2b, and 2c are immersed in the water at various depths.
  • the pumping chambers have outlets 3a, 3b, and 3c that face down to ensure proper confinement of the working fluid.
  • Three intake ports 4a, 4b, 4c and three exhaust ports 5a, 5b, 5c are located in the upper parts of the chambers.
  • the spaces formed by the chambers and the outlets are partially filled v/ith the working fluid, and partially filled with the water.
  • the working fluid is above the water.
  • the boundary between the water and the working fluid varies because of g!RE ⁇
  • OMPI the action of the wave motion of the water.
  • the ports are connected to accumulators 8a, 8b, 8c, and 8d.
  • Three check valves 6a, 6b, 6c are interposed between the intake ports and the accumulators.
  • Three check valves 7a, 7b, 7c are interposed between the exhaust ports and the accumulators.
  • a turbine 9 is connected between 8d and 8a to produce mechanical power from the gas pressure.
  • the device operates as follows: The first pumping unit is only partially immersed in the water with the top of the chamber 2a above the water and its outlet 3a below the water surface. When the wave motion of the water causes the pressure inside the chamber to drop, the working fluid from the accumulator 8a flows into the chamber. When the pressure in the chamber increases sufficiently later, the working fluid is expelled through the exhaust port to the next accumulator 8b.
  • the second pumping chamber 2b is located slightly deeper in the water, since a greater pressure bias is needed. It pumps the working fluid from the accumulator 8b to the accumulator Sc with another step of increase in pressure.
  • the last pumping chamber 2c pumps the working fluid from the accumulator 8 ⁇ to the last accumulator 8d with the final step of increase in pressure.
  • the last accumulator 8d also serves as a storage tank for the fluid before it is finally utilized.
  • FIG. 2 illustrates the second embodiment.
  • the device collects energy from the wave motion of a body of water 1.
  • a liquid heavier than the water is used as the working fluid.
  • Three pumping chambers 2a, 2b, and 2c are immersed under the water at various depths.
  • the pumping chambers have outlets 3a, 3b, and 3c that face up to ensure proper confinement of the working fluid.
  • Three intake ports 4a, 4b, 4c and three exhaust ports 5a, 5b, 5c are located in the lower parts of the- chambers.
  • the spaces formed by the chambers and the outlets are partially filled with the working fluid, and partially filled with the water.
  • the working fluid is below the water.
  • the boundary between the water and the working fluid varies because of the action of the wave motion of the water.
  • the ports are connected to accumulators 8a, 8b, 8c, and 8d.
  • Three check valves 6a, 6b, 6c are interposed between the intake ports and the accumulators.
  • Three check valves 7a, 7b, 7c are interposed between the exhaust ports and the accumulators.
  • a turbine 9 is connected between accumulators 8d and 8a to produce mechanical power from the fluid pressure.
  • the device operates as follows:
  • the first pumping chamber 2a is deeply immersed in the water with its outlet 3a below the water surface.
  • the working fluid from the accumulator 8a flows into the chamber.
  • the pressure in the chamber increases sufficiently later, the working fluid is expelled through the exhaust port to the next accumulator 8b.
  • the second pumping chamber 2b is located less deeply in the water since the average elevation of the interconnected accumulators is higher. It pumps the working fluid from the accumulator 8b to the accumulator 8c with another step of increase in elevation.
  • the last pumping chamber 2c pumps the working fluid from the accumulator 8c to the last accumulator 8d with the final step of increase in elevation.
  • the last accumulator 8d also serves as a storage tank for the fluid before it is finally utilized.
  • FIG. 3 illustrates the third embodiment.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the primary working fluid, and a liquid lighter than the water is used as the secondary working fluid.
  • Three pumping chambers 2a, 2b, and 2c are supported above the water.
  • the pumping chambers have outlets 3a, 3b, and 3c that extend below the water surface to various depths.
  • the openings of the outlets face down to ensure proper confinement of the working fluid 4a, 4b, 4 ⁇ .
  • Three ports 5a, 5b, 5 ⁇ are located in the upper parts of the chambers and serve both intake and exhaust functions.
  • the chambers are partially filled with the working liquid, and partially filled with the gas.
  • the working liquid is below the gas.
  • the extended outlets are partially filled with the working liquid and partially filled with the water.
  • the working liquid is above the water.
  • the boundaries between the water and the working fluid and between the gas and the liquid vary due to the action of the wave motion of the water.
  • the ports are connected to accumulators 8a, 8b, 8 ⁇ , and 8d.
  • Three intake check valves 6a, 6b, 6c and three exhaust check valves 7a, 7b, 7 ⁇ are interposed between the ports and the accumulators.
  • a turbine 9 is connected between 8d and 8a to convert the gas pressure into mechanical power.
  • FIG. 4 illustrates the fourth embodiment.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the primary working fluid, and a liquid heavier than water is used as the secondary working fluid.
  • Three pumping chambers 2a, 2b, and 2c are supported below the water level.
  • the pumping chambers have outlets 3a, 3b, and 3c that extend downward and then bend upward to reach some depth below the water surface.
  • the openings of the outlets face upward to ensure proper confinement of the working fluid 4a, 4b, 4c.
  • Three ports 5a, 5b, 5c are located in the upper parts of the chambers and serve both intake and exhaust functions.
  • the chambers are partially filled with the working liquid, and partially filled with the gas.
  • the working liquid is below the gas.
  • the extended outlets are partially filled with the working liquid and partially filled with the water.
  • the working liquid is below the water.
  • the boundaries between the water and the working liquid and between the gas and the liquid vary due to the action of the wave motion of the water.
  • the ports are connected to pressure accumulators 8a, 8b, 8c, and 8d.
  • Three intake check valves 6a, 6b, 6c and three exhaust check valves 7a, 7b, 7c are interposed between the ports and the accumulators.
  • a turbine 9 is connected between 8d and 8a to convert the gas pressure into mechanical power.
  • FIG. 5 illustrates the fifth embodiment.
  • the device collects energy from the wave motion of a body of water 1.
  • a liquid is used as the primary working fluid, and a gas is used as the secondary working fluid.
  • Three pumping chambers 2a, 2b, and 2c are supported above the water at various elevations.
  • the pumping chambers have outlets 3a, 3b, and 3c that extend upward and then bend downward to reach the water.
  • the openings of the outlets face down to ensure proper confinement of the gas 4a, 4b, 4 ⁇ .
  • Three ports 5a, 5b, 5c are located in the lower parts of the chambers and serve both intake and exhaust functions.
  • the chambers are partially filled with the gas, and partially filled with the working liquid.
  • the gas is above the working liquid.
  • the extended outlets are partially filled with the gas and partially filled with the water.
  • the gas is above the water.
  • the boundaries between the water and the gas and between the working liquid and the gas vary due to the action of the wave motion of the water.
  • the ports are connected to accumulators 8a, 8b, 8c, and 8d.
  • Three intake check valves 6a, 6b, 6 ⁇ and three exhaust check valves 7a, 7b, 7c are interposed between the ports and the accumulators.
  • a turbine 9 is connected between 8d and 8a to convert the fluid pressure into mechanical power.
  • FIG. 6 illustrates the sixth embodiment.
  • the device collects energy from the wave motion of a body of water 1.
  • a heavy liquid is used as the primary working fluid, and a liquid heavier than water but lighter than the primary working fluid is used as the secondary working fluid.
  • Three pumping chambers 2a, 2b, and 2c are supported below the water at various depths.
  • the pumping chambers have outlets 3a, 3b, and 3c that extend upward to some depth below the water surface.
  • the openings of the outlets face up to ensure proper confinement of the working fluid 4a, 4b, 4 ⁇ .
  • Three ports 5a, 5b, 5c are located in the lower parts of the chambers and serve both intake and exhaust functions.
  • the chambers are partially filled with the secondary working liquid, and partially filled with the primary working fluid.
  • the secondary working fluid is above the primary working fluid.
  • the extended outlets are partially filled with the secondary working fluid and partially filled with the water.
  • the secondary working fluid is below the water.
  • the boundaries between the water and the secondary working fluid and between the primary working fluid and the secondary fluid vary due to the action of the wave motion of the water.
  • the ports are connected to accumulators 8a, 8b, 8c, and 8d.
  • Three intake check valves 6a, 6b, 6c and three exhaust check valves 7a, 7b, 7c are interposed between the ports and the accumulators.
  • a turbine 9 is connected between 8d and 8a to generate mechanical power.
  • the mode of operation of embodiments three through six is as follows: The wave motion of the water acts on the secondary fluid which in turn acts on the primary fluid.
  • the primary fluid is pumped from one accumulator to another in a similar way as in the first embodiment.
  • the purpose of extending the outlets and introducing the secondary fluid is to provide certain elevation and pressure bias for the pumping chambers.
  • FIG. 7 illustrates an embodiment in the first form which further incorporates floats and screens in the pumping units.
  • the construction of the device is similar to that in the first embodiment.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the working fluid.
  • Three pumping chambers 2a, 2b, 2c have outlets 3a, 3b, 3c, intake ports 4a, 4b, 4 ⁇ and exhaust ports 5a, 5b, 5c.
  • the ports are connected to accumulators 8a, 8b, 8 ⁇ , 8d through intake valves 6a, 6b, 6 ⁇ and exhaust valves 7a, 7b, 7c.
  • a turbine 9 is connected between 8d and 8a.
  • floats 10a, 10b, 10c are provided in the pumping units to minimize the sloshing of the water.
  • screens 11a, lib, lie are introduced to cover the openings of the outlets. The screens prevent unwanted objects from entering the device.
  • the second form of the invention is similar to the first form but it further incorporates a flexible membrance in each pumping unit.
  • Figure 8 illustrates an embodiment of the device in this form.
  • the construction of the device is similar to that in the first embodiment shown in Figure 1.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the working fluid.
  • Three pumping chambers are used as the working fluid.
  • 2a, 2b, 2c have outlets 3a, 3b, 3 ⁇ , intake ports 4a, 4b, 4c and exhaust ports 5a, 5b, 5 ⁇ .
  • the ports are connected to accumulators 8a, 8b, 8c, 8d through intake valves 6a, 6b,
  • the membrance partitions the water and the working fluid. It minimizes the sloshing of the water in the chamber. It also prevents the intermixing of the water and the working fluid while allowing the pressure to be transmitted. In case the water level drops excessively, the membrances prevent the loss of the working fluid.
  • the third form of the invention is similar to the first form but it further incorporates a piston sliding in each pumping unit.
  • Figure 9 illustrates an embodiment in this form.
  • the construction of the device is similar to that in the first embodiment shown in Figure 1.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the working fluid.
  • Three pumping chambers 2a, 2b, 2c have outlets 3a, 3b, 3 ⁇ , intake ports 4a, 4b, 4c and exhaust ports 5a, 5b, 5c.
  • the ports are connected to accumulators 8a, 8b, 8c, 8d through intake valves ⁇ a, 6b, 6c and exhaust valves 7a, 7b, 7c.
  • a turbine 9 is connected between 8d and 8a.
  • pistons 10a, 10b, and 10c are provided in the chamber.
  • the piston is interposed between the water and the working fluid.
  • the piston slides in a cylindrical wall and transmits the water pressure.
  • An improvement of the collection device is possible by a more efficient control of the fluid flows.
  • the pun ⁇ ping units and the accumulators are similar to those in the preceeding disclosure but a modification is made in their interconnections.
  • the pumping action is possible only when the pressure in the chamber is sufficiently low as compared to the pressure in the accumulator on the supply side, or when the pressure in the chamber is sufficiently high as compared to the pressure in the accumulator on the receiving side. A pressure variation in between the two limits will not cause the pumping to take place. As a result, some energy in the water waves is wasted.
  • a pumping unit is connected to three or more accumulators at various elevations and pressures through a manifold.
  • Valves are provided in the manifold.
  • a computing device is incorporated. This computing device may be analog, digital, electronic, or hydraulic in nature.
  • the computing device has sensors that measure the accumulator pressures, the accumulator fluid levels, the pumping unit pressures, and the water levels inside and outside the pumping units. With the sensor data as input, the computing device computes the optimal timing of the opening and closing of the valves in the manifold. It then outputs commands to
  • OMP ⁇ control the valves. Higher efficiency of the pumping device is possible with this improvement. This improvement applies to all three forms of the invention disclosed earlier.
  • FIG 10 shows a schematic diagram of a device with this improvement.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the working fluid.
  • Three pumping chambers 2a, 2b, and 2c are immersed in the water.
  • the pumping chambers have outlets 3a, 3b, 3c, and ports 5a, 5b, 5c.
  • the chambers are connected with five accumulators 8a, 8b, 8c, 8d, 8e through a manifold.
  • the pressures in the accumulators increase successively from 8a to 8e.
  • Valves 6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i are provided in the manifold to regulate the gas flows.
  • the chamber 2a operates with accumulators 8a, 8b, 8c through valves 6a, 6b, 6c.
  • the chamber 2b operates with accumulators 8b, 8 ⁇ , 8d through valves 6d, 6e, 6f.
  • the chamber 2c operates Xtfith accumulators 8c, 8d, 8e through valves ⁇ g, 6h, 6i.
  • the valves are controlled by a computer 4.
  • a water level sensor 11 measures the level of the open water.
  • Sensors 10a, 10b, 10c measure water levels inside the pumping chambers.
  • Pressure sensors 7a, 7b, 7 ⁇ , 7d, 7e measure the pressures in the accumulators. All the sensors send measured data to the computer 4.
  • the computer computes the optimal timing for the opening and closing of the valves and sends the commands to the valves.
  • a turbine 9 is connected between accumulators 8e and 8a to generate mechanical power.
  • thermodynamic state is determined by its temperature, pressure, and density.
  • the temperature of the gas is raised when it is compressed. Heat may escape to the surroundings if the gas is not insulated.
  • the degree to which the gas is insulated affects its thermodynamic state. It further affects the amount of work needed to compress the gas. When the gas expands and does work, its temperature tends to decrease. It may absorbs some heat if it is in contact with a hotter surroundings. The amount of work done by the gas depends on the amount of "heat the gas absorbs. The compression and expansion of the gas form a thermodynamic cycle.
  • thermodynamic efficiency it is desirable to use either adiabatic cycle or isothermal cycle.
  • the gas In the adiabati ⁇ cycle, the gas is heat insulated from the time it is compressed till the time it has expanded and released its energy.
  • the gas In the isothermal cycle, the gas is kept at the same temperature as the surroundings by radiators so that it releases heat during compression and absorbs heat during expansion. Deviations from these ideal conditions can result in loss of efficiency.
  • the pumping device is either provided with insulations or heat exchange devices. This improvement applies to all three forms of the invention disclosed earlier. Figure 11 illustrates the improvement with insulation.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the working fluid.
  • Three pumping chambers 2a, 2b, 2c have outlets 3a, 3b, 3c, intake ports 4a, 4b, 4c and exhaust ports 5a, 5b, 5c.
  • the ports are connected to accumulators 8a, 8b, 8c, 8d through intake valves 6a, 6b, 6c and exhaust valves 7a, 7b, 7 ⁇ .
  • a turbine 9 is connected between 8d and 8a.
  • the device is provided with heat insulators 10a, 10b, 10c, and lOd.
  • Figure 12. illustrates the improvement with heat exchange device.
  • the device collects energy from the wave motion of a body of water 1.
  • a gas is used as the working fluid.
  • Three pumping chambers 2a, 2b, 2c have outlets 3a, 3b, 3 ⁇ , intake ports 4a, 4b, 4c and exhaust ports 5a, 5b, 5c.
  • the ports are connected to accumulators 8a, 8b, 8c, 8d through intake valves 6a, 6b, 6c and exhaust valves 7a, 7b, 7c.
  • a turbine 9 is connected between 8d and 8a.
  • the device is provided with cooling fins 10a, 10b, 10c, and lOd as heat exchange device.
  • the turbine is provided with
  • Figure 13 shows a single stage pumping system with a gas as the working fluid.
  • the system collects energy from the wave motion of a body of water 1.
  • a pumping chamber 2 is partially immersed in the water.
  • the pumping chamber has an outlet 3 that faces down to ensure proper confinement of the working fluid.
  • An intake port 4 and an exhaust port 5 are located in the upper part of the chamber. The space formed by the chamber and the outlet is partially filled with the working fluid, and partially filled with the water.
  • the working fluid is above the water. The boundary between the water and the working fluid varies because of the action of the wave motion of the water.
  • the port 4 is connected to an accumulator 3a.
  • the port 5 is connected to another accumulator 8b.
  • a check valve 6 is interposed between the intake port and the accumulator 8a.
  • Another check valve 7 is interposed between the exhaust port and the accumulator 8b.
  • a turbine 9 is connected between 8b and 8a to produce mechanical power from the gas pressure.
  • a valve 20 is connected to the exhaust of the turbine on one side , and open to the atmosphere through an opening 21 on the other side .
  • the system operates as follo s :
  • the wave motion of the wa ter causes var ia tion in the pressure ins ide the chamber .
  • a drop in the chamber pressure allows the gas in the accumulator 8a to flow into the chamber 2.
  • the pressure in the chamber 2 increases sufficiently later on , the gas inside is expelled to the accumulator 8b .
  • the gas in the accumulator 8a is therefore pumped to the accumulator 8b at a higher pressure .
  • the wave motion of the water causes variation in the pr e ssur e ins ide the chamber .
  • a drop in the chamber pressure allws the air in the atmosphere to flow through the opening 21 and the valve 20 and into the chamber .
  • the pressure in the chamber 2 increases sufficiently later on , the air inside is expelled to the accumulator 8b .
  • the air in the atmosphere is thus pumped to the accumulator 8b at a higher pressure .
  • the pressurized air is used to dr ive the turbine 9 .
  • the exhaust of the turbine may escape into the atmosphere through the valve 20 and the opening 21. Some of the exhaust a ir may also be drawn back into the chamber 2 directly.
  • Figure 14 shows a single stage pumping system with a liquid as the primary working fluid and a gas as the secondary working fluid.
  • the system collects energy from the wave motion of a body of water 1.
  • a pumping chamber 2 is supported above the water.
  • the pumping chamber has an outlet 3 that extends upward and then bend downward to reach the water. The opening of the outlet faces down to ensure proper confinement of the gas 4.
  • a port 5 is located in the lower part of the chamber and serves both intake and exhaust functions.
  • the chamber is partially filled with the gas, and partially filled with the working liquid.
  • the gas is above the working liquid.
  • the extended outlet is partially filled with the gas and partially filled with the water.
  • the gas is above the water.
  • the boundaries between the water and the gas and between the working liquid and the gas vary due to the action of the wave motion of the water.
  • the port 5 is connected to accumulators 8a and 8b.
  • An intake check valve 6 and an exhaust check valves 7 are interposed between the port 5 and the accumulators.
  • the system operates as follows: The wave motion of the water produces pressure variation in ' the gas 4. The pressure is transmitted to the working liquid. When the pressure in the chamber 2 drops, the working liquid flows from the accumulator 8a to the chamber 2. When the chamber pressure increases sufficiently later, the working liquid is expelled to the accumulator 8b. The working liquid in the accumulator 8a is thus pumped to the accumulator 8b at a higher elevation.
  • Figure 15 shows a pumping system with a gas as the working fluid and with multiple pumping units connected in parallel.
  • the system collects energy from the wave motion of a body of water 1.
  • Three pumping chambers 2a, 2b, and 2c are partially immersed in the water.
  • the pumping chambers have outlets 3a, 3b, and 3 ⁇ that face down to ensure proper confinement of the working fluid.
  • Three intake ports 4a, 4b, 4c and three exhaust ports 5a, 5b, 5c are located in the upper parts of the chambers.
  • the spaces formed by the chambers and the outlets are partially filled with the working fluid, and partially filled with the water.
  • the working fluid is above the water.
  • the boundary between the water and the working fluid varies because of the action of the wave motion of the water.
  • the ports are connected to accumulators 8a and 8d.
  • Three check valves 6a, 6b, 6c are interposed between the intake ports and the accumulator 8a.
  • Three check valves 7a, 7b, 7c are interposed between the exhaust ports and the accumulator
  • a turbine 9 is connected between accumulators 8d and
  • the system operates as follows: Each chamber is subjected to pressure variation from the wave motion of the water. As a result, the working fluid flows from the accumulator 8a to the chamber, then from the chamber to the accumulator 8d. The three chambers work in parallel to pump the gas from the accumulator 8a to the accumulator 8d at a higher pressure.
  • Figure 16 shows a system with a liquid as the primary working fluid and a gas as the secondary working fluid. It has multiple pumping units connected in parallel.
  • the system collects energy from the wave motion of a body of water 1.
  • Three pumping chambers 2a, 2b, and 2c are supported above the water.
  • the pumping chambers have outlets 3a, 3b, and 3c that extend upward and then bend downward to reach the water.
  • the openings of the outlets face down to ensure proper confinement of the gas 4a, 4b, 4c.
  • Three ports 5a, 5b, 5c are located in the lower parts of the chambers and serve both intake and exhaust functions.
  • the chambers are partially filled with the gas, and partially filled with the working liquid.
  • the gas is above the working liquid.
  • the extended outlets are partially filled with the gas and partially filled with the water.
  • the gas is above the water.
  • the boundaries between the water and the gas and between the working liquid and the gas vary due to the action of the wave motion of the water.
  • the ports are connected to accumulators 8a and 8d.
  • Three intake check valves 6a, 6b, 6c and three exhaust check valves 7a, 7b, 7c are interposed between the ports and the accumulators.
  • a turbine 9 is connected between 8d and 8a to convert the fluid pressure into mechanical power.
  • the system operates as follows: The wave motion in the water produces pressure variation in the gas. Each chamber is subjected to the pressure variation from the gas. As a result, the liquid flows from the accumulator 8a to the chamber, then ' from the chamber to the accumulator 8d. The three chambers work in parallel to pump the working liquid from the accumulator 8a to the accumulator 8d at a high elevation.

Abstract

Un dispositif de récupération (Fig. 1) permet d'extraire de l'énergie du mouvement ondulatoire de l'eau et utilise des fluides de travail, plusieurs unités de pompage et des accumulateurs (8a, 8b, 8c et 8d) reliés entre eux, et des soupapes (6a, 6b, 6c, 7a, 7b, 7c) pour réguler l'écoulement de fluide. Chaque unité de pompage possède une chambre (2a, 2b, 2c) ayant un orifice d'admission (4a, 4b, 4c) relié à un accumulateur (8a, 8b, 8c), un orifice de décharge (5a, 5b, 5c) relié à un autre accumulateur (8b, 8c, 8d), et une sortie (3a, 3b, 3c) à l'eau. Le fluide de travail dans les chambres (2a, 2b, 2c) est en contact avec l'eau, ou est séparé de l'eau par une membrane flexible (10a, 10b, 10c, Fig. 8) ou un piston (10a, 10b, 10c, Fig. 9). La pression du mouvement ondulatoire de l'eau a pour effet de pomper le fluide de travail d'un accumulateur vers l'autre avec un certain accroissement de la pression ou de l'élévation. Plusieurs étages d'unités de pompage peuvent être reliés en série, pour obtenir une plus grande augmentation de la pression ou de l'élévation. Les unités de pompage peuvent également être connectées en parallèle pour obtenir un débit total plus grand.
PCT/US1984/001309 1984-08-17 1984-08-17 Production d'energie WO1986001259A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1984/001309 WO1986001259A1 (fr) 1984-08-17 1984-08-17 Production d'energie
EP84903248A EP0190126A1 (fr) 1984-08-17 1984-08-17 Production d'energie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1984/001309 WO1986001259A1 (fr) 1984-08-17 1984-08-17 Production d'energie

Publications (1)

Publication Number Publication Date
WO1986001259A1 true WO1986001259A1 (fr) 1986-02-27

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Country Link
EP (1) EP0190126A1 (fr)
WO (1) WO1986001259A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221958A (en) * 1988-08-04 1990-02-21 Edward Garside Pipe network for extracting energy from ocean waves and tidal flows
GB2245031A (en) * 1990-06-11 1991-12-18 Denis Joseph Rowan Wave power resonance generator
WO1997037122A1 (fr) * 1995-03-02 1997-10-09 A.P. Van Den Berg Beheer B.V. Convertisseur d'energie de la houle
WO2009144468A2 (fr) 2008-05-29 2009-12-03 Norman West Bellamy Convertisseur d'énergie
WO2010071948A1 (fr) * 2008-12-24 2010-07-01 Rob Frazer Système de pompe multi-étages
DE102009008211A1 (de) * 2009-02-10 2010-08-12 Philipp Sinn Energiegewinnung aus Wellen oder Impulsen
US20120091718A1 (en) * 2008-09-05 2012-04-19 Mcminn Derek James Wallace Fluid Power Generator for Extracting Energy from a Fluid Flow
FR2969718A1 (fr) * 2010-12-24 2012-06-29 Wind Building Engineering Wibee Generateur oscillant electrique
AU2011204940B2 (en) * 2008-12-24 2012-11-15 Rob Frazer A multi-stage pump system
US8890352B2 (en) 2008-09-05 2014-11-18 Derek James Wallace McMinn Power generator for extracting energy from a liquid flow
CN104405561A (zh) * 2014-09-30 2015-03-11 安科智慧城市技术（中国）有限公司 波浪能发电装置
JP2022012421A (ja) * 2020-07-01 2022-01-17 パナソニックＩｐマネジメント株式会社 波力利用装置及びその制御方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925986A (en) * 1974-07-08 1975-12-16 William M Barwick Air engine
US4078382A (en) * 1974-02-20 1978-03-14 Ricafranca Romulo M Method and apparatus for deriving useful energy from sea waves
US4098081A (en) * 1977-02-14 1978-07-04 Woodman Harvey R Tidal power plant and method of power generation
US4271668A (en) * 1979-10-17 1981-06-09 Mccormick Michael E Counter-rotating wave energy conversion turbine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4078382A (en) * 1974-02-20 1978-03-14 Ricafranca Romulo M Method and apparatus for deriving useful energy from sea waves
US3925986A (en) * 1974-07-08 1975-12-16 William M Barwick Air engine
US4098081A (en) * 1977-02-14 1978-07-04 Woodman Harvey R Tidal power plant and method of power generation
US4271668A (en) * 1979-10-17 1981-06-09 Mccormick Michael E Counter-rotating wave energy conversion turbine

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221958A (en) * 1988-08-04 1990-02-21 Edward Garside Pipe network for extracting energy from ocean waves and tidal flows
GB2245031A (en) * 1990-06-11 1991-12-18 Denis Joseph Rowan Wave power resonance generator
WO1997037122A1 (fr) * 1995-03-02 1997-10-09 A.P. Van Den Berg Beheer B.V. Convertisseur d'energie de la houle
WO2009144468A2 (fr) 2008-05-29 2009-12-03 Norman West Bellamy Convertisseur d'énergie
WO2009144468A3 (fr) * 2008-05-29 2010-10-28 Norman West Bellamy Convertisseur d'énergie
US20120091718A1 (en) * 2008-09-05 2012-04-19 Mcminn Derek James Wallace Fluid Power Generator for Extracting Energy from a Fluid Flow
US8890352B2 (en) 2008-09-05 2014-11-18 Derek James Wallace McMinn Power generator for extracting energy from a liquid flow
US9017042B2 (en) 2008-12-24 2015-04-28 Rob Frazer Multi-stage pump system
AU2011204940B2 (en) * 2008-12-24 2012-11-15 Rob Frazer A multi-stage pump system
WO2010071948A1 (fr) * 2008-12-24 2010-07-01 Rob Frazer Système de pompe multi-étages
DE102009008211A1 (de) * 2009-02-10 2010-08-12 Philipp Sinn Energiegewinnung aus Wellen oder Impulsen
DE102009008211B4 (de) * 2009-02-10 2016-06-02 Sinn Power Gmbh Energiegewinnung aus Wellen oder Impulsen
FR2969718A1 (fr) * 2010-12-24 2012-06-29 Wind Building Engineering Wibee Generateur oscillant electrique
CN104405561A (zh) * 2014-09-30 2015-03-11 安科智慧城市技术（中国）有限公司 波浪能发电装置
JP2022012421A (ja) * 2020-07-01 2022-01-17 パナソニックＩｐマネジメント株式会社 波力利用装置及びその制御方法
JP7178642B2 (ja) 2020-07-01 2022-11-28 パナソニックＩｐマネジメント株式会社 波力利用装置及びその制御方法

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