WO2023174549A1 - Centrale de stockage d'énergie par pompage - Google Patents

Centrale de stockage d'énergie par pompage Download PDF

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Publication number
WO2023174549A1
WO2023174549A1 PCT/EP2022/057066 EP2022057066W WO2023174549A1 WO 2023174549 A1 WO2023174549 A1 WO 2023174549A1 EP 2022057066 W EP2022057066 W EP 2022057066W WO 2023174549 A1 WO2023174549 A1 WO 2023174549A1
Authority
WO
WIPO (PCT)
Prior art keywords
reservoir
power plant
storage power
partition
pumped storage
Prior art date
Application number
PCT/EP2022/057066
Other languages
German (de)
English (en)
Inventor
Gmbh Rh-Power
Hans Rüegg
Original Assignee
Rh Power Gmbh
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 Rh Power Gmbh filed Critical Rh Power Gmbh
Priority to PCT/EP2022/057066 priority Critical patent/WO2023174549A1/fr
Publication of WO2023174549A1 publication Critical patent/WO2023174549A1/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
    • F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
    • 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
    • F03B13/08—Machine or engine aggregates in dams or the like; Conduits therefor, e.g. diffusors
    • 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
    • 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
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • 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
    • F05B2260/42—Storage of energy
    • F05B2260/422—Storage of energy in the form of potential energy, e.g. pressurized or pumped fluid

Definitions

  • the invention relates to a pumped storage power plant and a method for temporarily storing electrical energy.
  • a pumped storage power plant also known as pumped storage power plant, abbreviated as PSW
  • PSW pumped storage power plant
  • a PSW can absorb excess electrical energy in the power grid and release it back into the grid when needed. This function as a buffer is particularly important with a high proportion of so-called renewable energies, e.g. B. Solar energy and wind energy are of great importance in the energy supply.
  • PSW could play an important role in the desired energy transition, especially in increasing the share of renewable energies in the energy supply. Especially against the background of the daily fluctuations in the production of renewable energies, there is a need to increase the buffer storage capacity.
  • the task is therefore to provide further, in particular improved, options for temporarily storing electrical energy.
  • the task is to provide an option for the temporary storage of electrical energy that is sustainable, especially in the sense that it has as little impact on the environment and/or the population and/or the landscape as possible.
  • the PSW includes:
  • This can in particular be a lake, e.g. B. a natural lake or a reservoir, but also a sea.
  • reservoir refers in particular to a storage volume for water.
  • the pump is attached to an outlet of the second reservoir, can be driven by an electric motor and is set up to pump water from the second reservoir into the first reservoir.
  • Corresponding pumps are from the prior art, e.g. B. for conventional PSW, known.
  • the turbine is attached to an inlet of the second reservoir and can be mechanically coupled, in particular coupled, to an electrical generator. This allows electrical energy to be generated when water flows in through the inlet.
  • Appropriate Turbines are known from the prior art, for example for conventional PSW.
  • the turbine and the pump cannot be designed as separate components, but rather together as a pump turbine, for example as a Francis turbine.
  • the electric motor and the electric generator can also be combined in a rotating electric machine.
  • the second reservoir is arranged within the first reservoir and is separated from the first reservoir by a partition, in particular only separated by a partition.
  • the partition wall can in particular be constructed from the usual materials for a dam, e.g. reinforced concrete.
  • the fact that the second reservoir is arranged within, in particular laterally within, the first reservoir means, in other words, that the second reservoir is surrounded laterally, i.e. in a horizontal direction or in a horizontal plane, by the first reservoir.
  • This is in contrast to conventional PSW, where the two reservoirs are spatially separated, particularly horizontally, e.g. by several kilometers, and vertically, e.g. by several hundred meters.
  • the terms “vertical” and “horizontal” have their usual meaning. In particular, “vertical” refers to the direction parallel to gravity and “horizontal” refers to all directions that are perpendicular to “vertical”.
  • the partition wall projects beyond a maximum water level of the first reservoir.
  • the maximum water level can be understood in particular as the height that the water surface can reach in the first reservoir during intended operation.
  • the PSW is set up in such a way that the water can never exceed the maximum water level by design or operational measures.
  • the maximum water level can be secured by an overflow of the first reservoir at the level of the first reservoir be .
  • the partition protrudes at least 1 m, in particular at least 3 m or at least 5 m, above the maximum water level.
  • the PSW described has various advantages, especially compared to conventional PSW: existing bodies of water, e.g. B. Use natural lakes or existing reservoirs to temporarily store energy by creating a partition wall without having to build additional areas in the landscape. This is beneficial for both sustainability and aesthetic reasons. Furthermore, a large potential for storage capacity can be developed with the PSW described, which is particularly necessary with regard to the desired increase in the proportion of renewable energies in the energy supply. So the PSW described is e.g. B. not in regions with significant differences in altitude, e.g. B. more than 100 m, bound, but can also be created in a body of water in lowlands. In particular, it is conceivable to implement the PSW described in an opencast mine that has been left open and later flooded.
  • the PSW described is aimed in particular at a period of 12 hours to 24 hours in order to compensate for the daily fluctuation of renewable energies such as solar and wind energy and in particular to ensure a sufficient energy supply at night.
  • renewable energies such as solar and wind energy
  • the energy can also be used for longer periods of time, e.g. B. of weeks and months, are cached.
  • the second reservoir is at least partially open at the top.
  • an entire top can be open.
  • part of the top can also be closed with a, e.g. B. central, opening. This additional “land gain” through the closed part of the top can be used for photovoltaics or other uses.
  • the terms “above” and “below” should have their usual meaning, in particular “above” lies relative to “below” against the direction of gravity.
  • the second reservoir extends to a bottom of the first reservoir.
  • “Soil” is understood to mean an underside.
  • the first reservoir is a lake or sea, this is in particular the lake bed or seabed, which can naturally also be uneven.
  • the partition is anchored in the ground.
  • anchoring can be achieved through a foundation.
  • the partition wall advantageously extends at least 3 m, in particular at least 5 m or at least 10 m, into the ground.
  • the partition wall and the floor inside and outside the second reservoir seal the second reservoir off from the first reservoir in a watertight manner.
  • various anchorings and seals must be provided in practice. If the surface is hard, it may be sufficient to have a foundation, e.g. B.
  • a concrete structure for the partition wall should only be created in the area of the partition wall.
  • a soft, especially water-permeable, surface e.g. B. made of silt, it may be necessary to install additional sealing.
  • This seal can e.g. B. include a waterproof film laid on the ground or underground around the second reservoir and connected to the partition.
  • the second reservoir extends essentially over the same height range as the first reservoir.
  • an altitude of the bottom of the second reservoir corresponds to that of the first reservoir, in particular the area of the first reservoir directly adjacent to the second reservoir, within a deviation of at most 10 m, in particular at most 5 m.
  • the maximum water level of the second reservoir in particular within a deviation of at most 1 m, corresponds to the maximum water level of the first reservoir.
  • a cross section of the second reservoir in a horizontal plane is essentially circular.
  • a circular cross section is advantageous for static reasons, since the hydrostatic pressure of the water in the first reservoir can be better absorbed when the second reservoir is (partially) emptied.
  • Essentially circular is understood to mean, in particular, any cross section in which a maximum radius is at most 50%, in particular at most 25% or at most 10%, larger than a minimum radius of the cross section.
  • the second reservoir essentially has the shape of a vertical cylinder and/or a vertical truncated cone. Both forms are characterized by their stability.
  • the truncated cone also has the advantage that with the same volume of the second reservoir on the water surface, only a relatively smaller proportion the partition wall of the PSW can be seen.
  • the truncated cone is pressed downwards by the hydrostatic pressure of the overlying water acting from outside in the first reservoir.
  • the second reservoir has a horizontal dimension between 50 and 1000 m, in particular between 100 and 300 m. Furthermore, in one embodiment, the second reservoir has a vertical dimension between 50 and 300 m, in particular between 100 and 200 m. Such dimensions can be realized in typical lakes, even in lowlands. In addition, such dimensions are sufficient for an intermediate storage device that can be operated in a technically and economically sensible manner. Further numerical examples can be found below in the section “Ways to carry out the invention”.
  • the second reservoir comprises a plurality of sub-reservoirs that are separated from one another by internal partitions or module partitions.
  • the partial reservoirs can in particular also be shaped essentially like vertical cylinders.
  • a cross section of each partial reservoir in a horizontal plane is essentially circular.
  • partial reservoirs that are separate from each other e.g. B. are arranged laterally adjacent to each other and are separated from each other and from the first reservoir by module partitions.
  • such partial reservoirs can e.g. B. have a hexagonal cross-section, which in particular falls under a “substantially circular cross-section” according to the definition above.
  • the partial reservoirs are advantageously connected to one another for water exchange.
  • the partial reservoirs can be filled from the first reservoir via a single inlet; the same applies to the outlet. This makes it possible to operate the PSW with a smaller number of pumps, turbines, electric motors and generators - in extreme cases with just one of each.
  • the inlet and/or the outlet are mounted in the lower half, in particular in the lower quarter, of the partition. This has the advantage that a larger height range of the second reservoir can be pumped empty and thus a larger height difference between the two water levels can be achieved. In this way, a larger potential energy can be used as a result of the difference between the hydrostatic pressure in the first reservoir and that in the second reservoir and the intermediate storage has a larger storage capacity.
  • a nozzle In order to reduce friction losses, in particular to reduce turbulence, it is advantageous for a nozzle to be fluidly positioned upstream of the inlet on the side of the first reservoir. The same applies to the outlet.
  • the PSW comprises a floating machine module within the second reservoir.
  • the floating machine module includes the pump, the turbine, the electric motor and the electric generator. Furthermore, the floating machine module is set up to float on a water surface in the second reservoir.
  • the floating machine module can e.g. B. include a raft that holds it to the water surface of the second reservoir.
  • the floating machine module is movably connected to the inlet and the outlet on the partition, in particular via pressure pipes.
  • a design with two pressure pipes as connections to the partition is advantageous: a first pressure pipe between the floating machine module and the outlet on the partition and a second pressure pipe between the floating machine module and the inlet on the partition each have at least one pivotable pipe joint, in particular at least two pivotable pipe joints.
  • the pipe joints can be set up to prevent horizontal deflections of the floating machine module.
  • the floating machine module has the advantage that it always keeps the turbine approximately at the level of the water level in the second reservoir. As a result, regardless of the water level, the difference in hydrostatic pressure between the first and second reservoir is always utilized, i.e. the maximum achievable electrical power is generated. Compared to a turbine mounted close to the ground, the floating machine module also has the advantage of being easier to maintain. All components, in particular the turbine, pump, electric motor and generator, are easily accessible from the outside and can be serviced or replaced if necessary.
  • Another aspect of the invention relates to a method for temporarily storing electrical energy.
  • the method can in particular be carried out using a PSW as described above and includes the following steps:
  • the second reservoir is arranged within the first reservoir.
  • the second reservoir essentially extends over the same height range as the first reservoir.
  • such a PSW and method represent a buffer for electrical energy with a high degree of efficiency, in particular with an efficiency of 75% - 80% and more, when viewed across the entire method from steps (a) and (b) taken together.
  • Fig. 1 shows a schematic vertical section through a PSW according to an embodiment of the invention
  • Figs. 2a and 2b show a schematic horizontal section through a partition and individual components of the partition according to an embodiment of the invention
  • FIG. 3 shows a schematic vertical section through a PSW according to an embodiment of the invention
  • Figs. 4a and 4b show a schematic horizontal section through a second reservoir according to an embodiment of the invention
  • Fig. 5 shows a schematic vertical section through a PSW with a floating machine module according to an embodiment of the invention
  • Fig. 6 a schematic detailed view from above of a PSW with a floating machine module according to an embodiment of the invention.
  • FIG. 1 shows a schematic section of a PSW in a body of water, in particular a lake or sea.
  • the PSW comprises a first reservoir 4, which largely corresponds to the original body of water, and a second reservoir 5, which is separated from the first reservoir 4 by a partition 3, in particular a dam.
  • the partition 3 has a height hT measured from the water bottom 2. Naturally, the height of the partition wall hT should be greater than the depth hn of the water at normal water levels.
  • the PSW further includes an outlet 11 from the second reservoir 5 into the first reservoir 4.
  • the outlet 11 establishes a fluid connection between the two reservoirs and can z. B. run through the partition 3.
  • a pump 15 which is driven by an electric motor 13
  • water can be pumped from the second reservoir 5 into the first reservoir 4. This causes the water level in the second reservoir 5 to drop to depth h2, while the water level in the first reservoir 4 rises to depth hl.
  • the partition height hT is greater than an ever expected or operationally permitted maximum value of the depth hl in the first reservoir 4.
  • the water in the first reservoir 4 now has a higher positional energy (per volume) than the water in the second reservoir 5. Electrical energy has been converted into positional energy and the PSW is (at least partially) “charged”.
  • the PSW includes an inlet 12 from the first reservoir 4 into the second reservoir 5.
  • the inlet 13 also establishes a fluid connection between the two reservoirs and can z. B. run through the partition 3.
  • outlet 11 and inlet 12 can be closed by a closing element, e.g. B. through a slider.
  • electric motor 13 and generator 14 can be combined in one electric machine.
  • the pump 15 and the turbine 16 can also be combined in a turbomachine. This makes it possible in particular to have outlet 11 and inlet 12 in a single fluidic connection, e.g. B. a pressure pipe, between the two reservoirs 4, 5.
  • the storage capacity of a PSW such as . B. in Fig. 1 shows the amount of electrical energy that is temporarily stored in the PSW as positional energy can, depends mainly on three factors: the maximum value of the water level difference hl-h2, the water volume in the second reservoir 5 in the height range from h2 to hl, and the efficiency. Example values for these sizes are described above.
  • the second reservoir has a volume of approximately 10.6 -IO 6 m 3 .
  • the Muttsee, i.e. the upper basin of the conventional PSW "Linth-Limmern” in Glarus/Switzerland has a volume of approx. 23 -IO 6 m 3 .
  • the conventional PSW "Linth-Limmern" has a storage capacity of 33.3 -IO 6 kWh due to a larger height difference between the upper and lower storage basin.
  • the conventional PSW e.g. "Linth-Limmern”
  • the PSW proposed here due to the use of a pre-existing body of water.
  • the construction and operation of the PSW here proposed PSW - in contrast to conventional PSW - also possible in lowlands.
  • the example calculation can be continued with regard to the feasibility of the structure, especially the partition wall or dam. Assuming a compressive strength of concrete of 70 N/mm 2 and below Including a safety factor of 1.5, the maximum wall thickness of the partition (at the floor) is approx. 4.8 m and, accordingly, an average wall thickness of approx. 2.4 m.
  • Fig. 2a shows a schematic drawing of a horizontal section through a PSW with a circular cross section.
  • the second reservoir 5 can, for example, be cylindrical as in FIG. 1 or also have the shape of a truncated cone as in FIG interlock to form a watertight barrier.
  • Concrete, for example, is suitable as a material for the components 31.
  • a possible shape of the components 31 is illustrated in FIG. 2b, which shows a detailed section of FIG. 2a. To save material, the components 31 can have a cavity 32.
  • Fig. 3 shows another possible design of the partition 3 for the second reservoir 5 in a vertical section.
  • the partition 3 as a whole can alternatively also have the shape of a truncated cone that is open at the top. Due to the shape of the truncated cone, the load forces of the water in the first reservoir 4 are diverted downwards onto the partition 3.
  • Fig. 3 shows a lateral seal 35 of the second reservoir 5 against the first reservoir 4.
  • a seal 35 may, as described above, be necessary in the case of a soft, in particular water-permeable, water bottom 2 in order to avoid an undesirable inflow of water through the water bottom 2 into the second reservoir 5.
  • Figs. 4a and 4b show exemplary embodiments of the PSW, in which the second reservoir 5 includes several sub-reservoirs 5a, 5b, 5c, etc., as described above.
  • all partial reservoirs 5a, 5b, 5c are located within the (main) partition 3 and are separated from each other by inner partitions 41.
  • the shape of the partial reservoirs 5a, 5b, 5c and partition walls 41 are not limited to square or rectangular, but can take on any shape, for example hexagonal or essentially circular.
  • the individual sub-reservoirs 5a, 5b, 5c, etc. are in fluid communication with each other. This means that it is sufficient to provide one machine module, in extreme cases comprising only one electrical machine and one turbomachine, for all sub-reservoirs together.
  • the inner partitions 41 reinforce the statics of the second reservoir 5 or the partition 3.
  • the second reservoir 5 is again composed of several sub-reservoirs 5a, 5b, 5c, etc. These are set up separately from one another, for example adjacent to one another, and are each delimited from the surrounding first reservoir 4 by their own module partition 41a.
  • Such an arrangement with separate partial reservoirs, i.e. reservoir modules so to speak, has the advantage that it can be set up more easily in an existing body of water.
  • the separate sub-reservoirs 5a, 5b, 5c, etc. are also fluidly connected to one another, for example via pressure pipes between at least some of the sub-reservoirs. This means that it is sufficient to provide a single machine module 10, which reduces the manufacturing, construction and operating costs.
  • Fig. 5 shows a PSW with a floating machine module 51, which has great advantages in terms of accessibility and maintainability.
  • the machine module 51 can be designed as a raft, for example with a weatherproof housing, and includes the electrical machine (or the electric motor and the generator) as well the turbomachine (or the pump and the turbine).
  • the machine module 51 is set up for swimming on the water surface in the second reservoir 5.
  • the machine module 51 can thus follow changes in the water level in the second reservoir 5, in particular when “loading” and “unloading” the PSW (see the machine module shown in dashed lines in FIG. 5 at a higher water level).
  • the machine module 51 must be movably connected to the inlet and outlet on the partition 3, e.g. B. via at least one pressure pipe 52. So the pressure pipe 52 can e.g. B. be attached both to the machine module 51 and to the partition 3 via a pivotable tubular joint.
  • FIG. 6 An advantageous embodiment of the floating machine module 51, e.g. B. according to Fig. 5, is shown in Fig. 6 shown in a plan view from above.
  • the machine module 51 is connected to the partition 3 via at least two pressure pipes:
  • the first pressure pipe 53 fluidly and mechanically connects the machine module 51 to the outlet 11 on the partition 3.
  • the second pressure pipe 54 fluidly and mechanically connects the machine module 51 to the inlet 12 on the partition 3.
  • At least two pipe joints 55 per pressure pipe ensure that the machine module can be moved vertically relative to the inlet and outlet.
  • the pipe joints 55 are set up in such a way that they allow the adjacent pressure pipe sections to be rotated in the plane of the pipe joint, but at the same time seal off the pressure pipe in a fluid-tight manner towards the outside.
  • the arrangement with at least two pressure pipes is mechanically stable even to the side (in the horizontal plane) and is therefore robust and durable.
  • the attachment point of the pressure pipes 52 (FIG. 5) and 53, 54 (FIG. 6) on the partition 3 should advantageously be located vertically approximately in the middle of the usable height range - in particular approximately in the middle between h2 and hn according to FIG. 1 .
  • the embodiments with a floating machine module 51 have the advantage that the machine module is always accessible from the outside or accessible from above and especially not under water. This makes maintenance and repairs considerably easier, especially compared to permanently installed machine modules, which in the proposed PSW are necessarily - at least partially and temporarily - below the water level. While preferred embodiments of the invention are described in the present application, it should be clearly understood that the invention is not limited thereto and may be embodied in other ways within the scope of the following claims.

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

Abstract

L'invention concerne une centrale de stockage d'énergie par pompage (PSPP) destinée à la mise en tampon temporaire d'énergie électrique. Le PSPP comprend un premier réservoir (4), en particulier un lac, et un second réservoir (5). Le PSPP comprend en outre une pompe (15) fixée à une sortie (11) du second réservoir (5), pouvant être entraînée par un moteur électrique (13) et conçue pour pomper l'eau du second réservoir (5) au premier réservoir (4), et comprend additionnellement une turbine (16) fixée à une entrée (12) du second réservoir (5) et pouvant être couplée mécaniquement à un générateur électrique (14) de telle sorte que de l'énergie électrique puisse être générée lorsque de l'eau s'écoule à travers l'entrée (12). Dans le PSPP, le second réservoir (5) est situé à l'intérieur du premier réservoir (4) et est séparé du premier réservoir (4) par une cloison (3). En outre, la cloison (3) fait saillie au-dessus d'un niveau d'eau maximal du premier réservoir (4).
PCT/EP2022/057066 2022-03-17 2022-03-17 Centrale de stockage d'énergie par pompage WO2023174549A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/057066 WO2023174549A1 (fr) 2022-03-17 2022-03-17 Centrale de stockage d'énergie par pompage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/057066 WO2023174549A1 (fr) 2022-03-17 2022-03-17 Centrale de stockage d'énergie par pompage

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2345809A1 (fr) * 2010-01-19 2011-07-20 Janne Aaltonen Génération d'énergie hydro-électrique
DE102010050313A1 (de) * 2010-11-05 2012-05-10 Wilhelm Ebrecht Vorrichtung zum Speichern elektrischer Energie
DE102011115606A1 (de) * 2011-09-27 2013-03-28 Manfred Bremicker Unterwasser-Pumpspeicherkraftwerk
DE102013015082A1 (de) * 2013-09-08 2015-03-12 Siegfried Sumser Archimedischer Speicherpark

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2345809A1 (fr) * 2010-01-19 2011-07-20 Janne Aaltonen Génération d'énergie hydro-électrique
DE102010050313A1 (de) * 2010-11-05 2012-05-10 Wilhelm Ebrecht Vorrichtung zum Speichern elektrischer Energie
DE102011115606A1 (de) * 2011-09-27 2013-03-28 Manfred Bremicker Unterwasser-Pumpspeicherkraftwerk
DE102013015082A1 (de) * 2013-09-08 2015-03-12 Siegfried Sumser Archimedischer Speicherpark

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