EP0115511A1 - A method of utilizing the energy in the surface waves in a body of liquid, such as waves on the surface of an ocean, and equipment for carrying out said method - Google Patents
A method of utilizing the energy in the surface waves in a body of liquid, such as waves on the surface of an ocean, and equipment for carrying out said methodInfo
- Publication number
- EP0115511A1 EP0115511A1 EP83902524A EP83902524A EP0115511A1 EP 0115511 A1 EP0115511 A1 EP 0115511A1 EP 83902524 A EP83902524 A EP 83902524A EP 83902524 A EP83902524 A EP 83902524A EP 0115511 A1 EP0115511 A1 EP 0115511A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- air
- flexible
- waves
- chambers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- 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"
- F03B13/18—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/188—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is flexible or deformable
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- 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
Abstract
Procédé et équipement permettant de tirer l'énergie contenue dans des vagues en surface en utilisant des tubes flexibles (2) divisés en sections reliées entre elles par des soupapes de retenue (4ab-4jk) s'ouvrant dans le même sens, chaque section étant divisée en deux chambres par une membrane lâche, flexible et imperméable au fluide (9), à savoir 1) une première chambre ou chambre à air (7a-7k) qui est fermée sur tous les côtés et est adaptée pour contenir un gaz ou un mélange gazeux, tel l'air, et 2) une seconde chambre ou chambre à eau (8a-8k) communiquant avec la seconde chambre ou chambre à eau précédente et successive (8a-8k) par l'intermédiaire des soupapes de retenue (4ab-4jk). Les chambres à air (7a-7k) jouent le rôle d'accumulateurs de pression accumulant de l'énergie de pression lorsque la section particulière est abaissée, libérant l'énergie accumulée pendant le mouvement ascendant ultérieur en faisant passer de force une certaine quantité du liquide se trouvant dans la chambre à eau par la soupape de retenue aval (4ab-4jk). Ainsi, un effet de pompage est obtenu lequel peut être utilisé pour entraîner une turbine ou autre dispositif similaire. Les chambres à air (7a-7k) confèrent des caractéristiques de flottaison aux tubes flexibles, de sorte que l'on peut se passer de moyens de flottaison séparés, tels que les flotteurs flexibles utilisés jusqu'à présent. Les tubes flexibles (2) et/ou les parois transversales (3ab-3jk) peuvent être fabriqués à partir d'un matériau en plastique de faible coût tel qu'une feuille de plastique renforcé avec des fibres de verre, et au moins une partie du procédé de fabrication peut être prise en charge sur le site de destination finale ou à proximité de celui-ci réduisant encore plus les coûts.Method and equipment for drawing energy from waves at the surface using flexible tubes (2) divided into sections interconnected by check valves (4ab-4jk) opening in the same direction, each section being divided into two chambers by a loose, flexible and fluid impermeable membrane (9), namely 1) a first chamber or air chamber (7a-7k) which is closed on all sides and is adapted to contain a gas or a gas mixture, such as air, and 2) a second chamber or water chamber (8a-8k) communicating with the previous and successive second chamber or water chamber (8a-8k) via the check valves (4ab -4jk). The air chambers (7a-7k) act as pressure accumulators accumulating pressure energy as the particular section is lowered, releasing the energy accumulated during the subsequent upward movement by forcibly passing a certain amount of the liquid in the water chamber through the downstream check valve (4ab-4jk). Thus, a pumping effect is obtained which can be used to drive a turbine or the like. The air chambers (7a-7k) impart flotation characteristics to the flexible tubes, so that separate flotation means, such as the flexible floats used heretofore, can be dispensed with. The flexible tubes (2) and / or the transverse walls (3ab-3jk) can be made from a low cost plastic material such as a plastic sheet reinforced with glass fibers, and at least a part of the manufacturing process can be supported at or near the final destination site further reducing costs.
Description
A METHOD OF UTILIZING THE ENERGY IN THE SURFACE WAVES IN A BODY OF LIQUID SUCH AS WAVES ON THE SURFACE OF AN OCEAN, AND EQUIPMENT FOR CARRYING OUT SAID METHOD.
TECHNICAL FIELD The present invention relates to a method of utilizing the energy in the surface waves in a body of liquid, such as the waves on the surface of an ocean, said method being of the kind in which the wave movements are utilized to move one or more elongated flexible tubes which are divided into a number of sections by means of fluid-tight transverse walls with non-return valves therein adapted to open in the same direction.
BACKGROUND ART
In known methods of this kind, the wave movements induce a potential and/or kinetic energy in a liquid - normally the same as in the surrounding body of liquid - flowing through the tube or tubes, and this energy may be transferred to one or a number of energy transforming units, such as turbines or the like.
In the British published patent specification No.2, 024, 957 a method of the kind indicated above is disclosed, said method being based on the use of a number of flexible tubes carried by a flexible surface float and divided into sections separated by non-return valves. These tubes are designed to be extended or contracted by the movements of
of the waves, each section acting like a bellows pump.
As the amount of energy available per unit area is limited, an acceptable level of output power can only be achieved by using equipment covering a substantial area of liquid surface concerned. This means, of course, that it should be possible to produce equipment to be used at a sufficiently low cost to enable such a method to be carried out in a reasonably economical manner.
DISCLOSURE OF THE INVENTION
On this background, it is the main object of the present invention to provide a method of the kind indicated above, for which the requisite equipment can be produced at a very low cost. This is attained by carrying out the method using tubes in which each section is divided into two chambers by means of a flexible fluid-tight membrane, viz.
1) a first chamber or air chamber, which is closed on all sides and adapted to contain a gas or a gas mixture, such as air, and
2) a second chamber or water chamber communicating with the preceding and succeeding second chamber or water chamber through the non-return valves.
By proceeding in the manner indicated above, it is possible to dispense with separate buoyancy means, such as the surface float disclosed in the above-mentioned GB-PS No. 2,024,957, as the gas, gas mixture or air contained in the first chamber or air chamber of each section will provide the requisite buoyancy. Further, this gas, gas mixture or air will act as a pressure accumulator accumulating pressure energy during movements downwards into the trough of the waves, releasing this energy during movement, upwards to the crest of the waves by forcing some of the liquid from the second chamber or water chamber in the
section concerned through the downstream non-return valve into the second chamber or water chamber in the succeeding section, regardless of whether the chambers or sections are elastically resilient as in the known tubes mentioned above or not.
The method according to the invention is preferably carried out by using tubes, in which each first chamber or air chamber extends from one transverse wall to the next. By proceeding in this manner, the gas, gas mixture or air contained in the first chamber or air chamber will contribute to keeping the tube or tubes distended, for whiqh reason it or they may be made from thin-walled - and hence comparatively cheap - material, such as plastic foil.
The present invention also relates to equipment for car rying out the method according to the invention and being of the kind comprising one or more elongated flexible tubes, which are divided into a number of sections by means of fluid-tight transverse walls with non-return valves therein adapted to open in the same direction.Accord- ing to the present invention, this equipment is characterized in that each section is divided into two chambers by means of a flexible fluid-tight membrane, viz.
1) a first chamber or air chamber, which is closed on all sides and adapted to contain a gas or a gas mixture, such as air, and
2) a second chamber or water chamber communicating with the preceding and succeeding second chamber or water chamber through the non-return valves.
A preferred embodiment of this equipment is characterized in that each flexible chamber extends from one transverse wall to the next. In such an embodiment, the gas, gas mixture or air contained in the first chamber or air chamber
will contribute to keeping the tube or tubes distended, for which reason it or they may be made from thin-walled material, such as plastic foil, which is comparatively cheap and easy to work with.
The equipment according to the invention may, of course, be constructed in many different ways, provided that the conditions set forth above are met with a view to producing the desired effect. It is, however, thought that considerable savings could be effected by letting the elongated tube or tubes consist of a) channel-shaped upper and. lower parts assembled along outwardly extending and e.g. fibre-reinforced lateral flanges and having stiffening means in the circuitifer ential direction, e.g. in the form of a polarized fi bre reinforcing, and possibly stiffening ribs allowing flexure transverse of the tube, b) a number of transverse walls carrying valve flaps, said transverse walls being secured in a fluid-tight manner to the upper part, possibly also to the lower part, in the space delimited by these components and with a longitudinal spacing corresponding to the length of the first and second chambers, and c) a number of flexible membranes, the longitudinally extending sides of which are secured between the lat eral flanges of the upper and lower part, and the trans versally extending sides of which are secured in a fluid-tight manner to the transverse walls, whereas d) the lateral flanges of the upper and lower part are secured in a fluid-tight manner to each other and to the longitudinal edges of the membranes, preferably by that the lateral flanges with the longitudinal edges of the membranes placed between them and the possible longitudinal fibre reinforcing are stacked and joined in a fluid-tight manner, such as by welding, thus form ing outwardly protruding lateral fins.
It can be expected that flexible tubes constructed in this manner will be extremely cheap to manufacture from equally cheap materials, such as glass-fibre reinforced plastic foil or the like, and it is also envisaged that at least part of the manufacturing process may be carried out on or close to the final site of the equipment.
It is not of critical importance for the functioning of the equipment according to the invention whether the nonreturn valves open in the direction of propagation of the waves or in the opposite direction. Thus, it is not necessary to use return-flow tubes to connect the ends of the flexible tubes most distant from the energy transforming equipment to this equipment, for which reason it is preferred to place one or a number of tubes on the surface of the liquid (water) in the form of one or more loops, the ends of which are placed close to each other and connected to the energy transforming equipment, such as a turbine. These loops may have any shape desired, such as a ring shape or a hairpin shape, and may be placed in such a manner relative to each other, that they intersect or cross each other partly or fully.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be explained in more detail with reference to the accompanying drawings, in which Figure 1 is a sketch illustrating the principle of the invention being a longitudinal sectional view of a piece of an elongated flexible tube constituting part of an equipment according to the invention and floating on an ocean surface with waves, Figure 2 is an example, showing how the elongated flexible tube may be constructed in practice, and Figure 3 is a sketch illustrating a process contemplated for the manufacture of the tube illustrated in
Figure 2.
DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to Figure 1 attention is first drawn to the fact that the ratio between wave height and wavelength indicated by the waves shown in the Figure is greatly exaggerated as compared to the waves normally occurring on the surface of an ocean, and the waves in the Figure are also drawn in the form of sine waves, which is not always the case in actual practice. It is assumed that the direction of propagation of the waves is as indicated by the double arrow 1, i.e. either towards the right or towards the left in the drawing.
The elongated tube according to the invention is shown in Figure 1 as a flexible tube with an outer wall 2. The space inside the tube is divided into sections , that can be imagined as designated a, b, c, ...., k, each section being separated from the neighbouring section by means of a transverse wall, the wall between sections a and b being designated as 3 ab, between sections b and c as 3bc and so forth. In each transverse wall 3ab,3bc, etc. there is an opening with a valve flap 4ab, 4bc, etc. respectively. As can be seen in Figure 1, all the valve flaps 4ab-jk are adapted to open for liquid flow from left to right in the drawing and to close for liquid flow in the opposite direction. The reference number 5 indicates the air above the surface of the ocean, and the reference number 6 indicates the water below said surface. Thus, the flexible tube 2 floats on the surface of the ocean, following the wave movements as indicated on the drawing. Each section of the tube 2 between two consecutive transverse walls 3a, 3bc, etc. is divided into two chambers,viz. firstly a water chamber 8a, 8b, etc. connected to the neighbouring water chambers at the ends through the non-return valves consti
tuted by the openings in the transverse walls 3ab, 3bc, etc. and the valve flaps 4ab, 4bc, etc., secondly by a pressure-accumulating air chamber 7a, 7b, etc., which is closed in relation to the surroundings, and which in the embodiment shown is separated from the water or liquid chamber 8a, 8b, etc. by means of a slack, flexible and liquid-tight membrane 9.
If it is assumed that the direction of propagation of the waves is toward the right in Figure 1, then one can imag ine the situation in one particular tube section changing from one moment to the next in such a manner that the situation at first is as shown in the extreme right of Figure 1, i.e. in section k, a moment later as in section j, the next moment as in section h, etc. towards the left on the drawing. One can thus imagine the liquid from the water chamber 8k can flow through the non-return valve 4jk in the flow direction of this valve, i.e. from the right towards the left, down into the neighbouring water chamber 8j, further through the next non-return valve down into the water chamber 8h, etc.. At some point, indicated here by the transition between the water chamber 8g and the water chamber 8f, the non-return valve in question, viz. 4fg, is closed because of the counter-pressure from the water chamber 8f next in succession.
When liquid flows into the water chambers 8j, 8h and 8g, the air in the air chamber 7j, 7h and 7g respectively will be compressed due to the liquid pressure increasing with increasing depth, and - as indicated in the Figure - the compression of the air chambers will increase with increasing depth. Thus, the air chamber 7g exhibits the smallest volume and will retain this volume when the waves have progressed to the extent that this air chamber occupies the position corresponding to the air chamber 7f,
since the non-return valve 4ef also is closed due to the pressure from the overlying liquid in the water chamber 8e and the air pressure from the associated air chamber 7e. The situation for the next sections c, b and a in succession generally corresponds to the situation for the sections k, j and h already mentioned, i.e. that the liquid in the water chambers 8c, 8b and 8a to a certain extent can flow through the non-return valves 4bc, 4ab and the next, un-referenced non-return valve in a similar manner to what has been described with reference to the sections k, j and h. Because of this, there is insufficient counterpressure in section c to keep the non-return valve 4cd closed, and consequently the air in the air chamber 7d will be able to expand and force some of the water in the water chamber 8d through the non-return valve 4cd into the water chamber 8c of the next section. From this point, the process continues cyclically as described above.
From the above it will be possible to realize that for each wave passage there occurs a net displacement of the liquid mass in the liquid chambers towards the left corresponding to the change of volume in the air chambers, i.e. in general corresponding to the difference in volume between the air chamber 7g or 7f and the air chamber 7c. This is based on the assumption that the movement of the liquid occurs without any back pressure being developed. If a back pressure occurs at the exit end of the tube 2, then the volume of liquid transported for each wave passage will, of course, be somewhat smaller, since the back pressure will prevent the air chambers from expanding to the degree indicated above.
A corresponding pumping effect will also occur if the waves progress in the opposite direction, since what is essential for the pumping effect is the up-and-down move
ment of each particular section of the flexible tube 2. Thus, it is possible to place the tubes side-by-side and with their non-return valves opening in two mutually opposite directions, and to connect the tubes together at one end and to, say, a turbine at the other end.
Figure 2 shows an example of how the elongated flexible tube could be constructed in practice. The tube shown is shaped as a ribbed tube 10 with two horizontal lateral fins 11 extending horizontally from each side of the tube. The lateral fins 11 serve partly to strengthen the tube against lateral flexure, partly to contribute to the transmission of the wave movement to the tube. On the upper side, the tube 10 comprises stiffening ribs 12 extending in the peripheral direction and strengthening the tube against expansion and contraction, but without reducing its flexibility. The tube is divided into sections by means of oblique transverse walls 13, which also serve as valve seats for the valve flaps 4. The membranes 9 separating the air chambers 7 from the water chambers 8 may, as indicated, be shaped like a bag or sac.
Figure 3 indicates how a tube of the kind shown in Figure 2 may be manufactured. As evident from the lower part of Figure 3, the tube consists of an upper part 14 and a lower part 15. The upper part 14 is shaped like an inverted channel and comprising lateral flanges 11' extending laterally from both lateral edges. In a corresponding manner, the lower part 15 is shaped like a channel with lateral flanges 11" at both lateral edges. As indicated in Figure 3, the combined transverse wall and valve seat 13 and the associated valve flap 4 exhibit single curvature in the same direction, and may be manufactured such as by moulding in plastic or artificial rubber. The components shown in Figure 3 may be assembled by first cementing
the transverse wall 13 together with the valve flap 4 in an oblique position in the upper part 14, after which the membranes 9 are placed against the lower faces of the lateral flanges 11' . Then, the lower part 15 is placed with its lateral flanges 11" against the lower face of those parts of the membrane 9, the upper face of which engages the lower faces of the lateral flanges 11' of the upper part 14, after which these three components are joined, such as by welding. The transverse wall 13 may be omitted and the upper part of the valve flap 4 used as a transverse wall, while letting the lower part of the valve flap 4 close against the lower part 15 of the tube. When the lateral, flanges 11' and 11" have been assembled or welded together with the lateral areas of the membranes 9, a pair of side fins will be produced, cf. the side fins 11 shown in Figure 2. In this connection it should be noted that the width of the membranes 9 should be sufficiently greater than the width of the upper and lower part as measured across the lateral fins or flanges to enable the membranes 9 to hang in a relatively slack or loose manner between the air chambers 7 and the liquid chamber 8 , as otherwise the membranes would partly be subjected to a heavy strain by the pressure of the water, partly counteract the compression of the air in the air chambers.
It should also be noted that most of the components of the tube may be made from material with a very small wall thickness, since the internal excess pressure will keep the tube distended.
It is, of course, possible to use ordinary sea or ocean water as the liquid used for extracting wave energy in the liquid chambers, but this would also mean accepting some of the less favourable characteristics of such water, such as the content of polluting agents, bacteria, algae,
traces of seaweed and even living animals, such as fish, shrimps etc., which could make the equipment useless after a period of time. It is therefore preferred that the elongated flexible tubes be connected to the energy transforming equipment, such as turbines, in one or more closed liquid circuits, the liquid containing additives, such as means for a) reducing hydraulic flow losses, b) reducing corrosion, c) preventing internal growth, such as with algae and/or bacteria, d) lowering the freezing point, and/or e) signalling leaks, such as in the form of non-toxic colouring agent, fluorescent agent or a reagent reacting with sea water by producing such an agent.
Claims
1. A method of utilizing the energy in the surface waves in a body of liquid, such as the waves on the surface of an ocean, said method being of the kind in which the wave movements are utilized to move one or more elongated flexible tubes (2), which are divided into a number of sections (7a,8a-7k,8k) by means of fluid-tight transverse walls (3ab-3jk) with non-return valves (4ab-4jk) therein adapted to open in the same direction, c h a r a c t e r i z e d in that as the elongated flexible tubes are used tubes in which each section is divided into two chambers by means of a flexible fluid-tight membrane (9), viz.
1) a first chamber or air chamber (7a-7k), which is closed on all sides and adapted to contain a gas or gas mixture, such as air, and
2) a second chamber or water chamber (8a-8k) communicating with the preceding and succeeding second chamber or water chamber (8a-8k) through the non-return valves (4ab-4jk).
2. A method according to claim 1, c h a r a c t e r i z e d in that flexible tubes are used, in which each first chamber or air chamber (7a-7k) extends from one transverse wall (3ab-3jk) to the next.
3. Equipment for carrying out the method according to claim 1 or claim 2 and comprising one or more elongated flexible tubes (2) , which are divided into a number of sections (7a, 8a-7k-8k) by means of fluid-tight transverse walls (3ab-3jk) with non-return valves (4ab-4jk) therein adapted to open in the same direction, c h a r a c t e ri z e d in that each section is divided into two chambers by means of a flexible fluid-tight membrane (9),viz. 1) a first chamber or air chamber (7a-7k), which is closed on all sides and adapted to contain a gas or gas mixture, such as air, and
2) a second chamber or water chamber (8a-8k) communicat ing with the preceding and succeeding second chamber or water chamber (8a-8k) through the non-return valves (4ab-4jk).
4. Equipment according to claim 3, c h a r a c t e r i z e d in that each first chamber or air chamber (7a-7k) extends from one transverse wall (3ab-3jk) to the next.
5. Equipment according to claim 4, c h a r a c t e r i z e d in that the elongated flexible tube or tubes consists or consist of a) channel-shaped upper and lower parts (14 and 15 resp.) assembled along outwardly extending and e.g. fibre reinforced lateral flanges (11' and 11" respectively) having stiffening means in the circumferential direction, e.g. in the form of a polarized fibre reinforcing, and possibly stiffening ribs (12) allowing flexure transverse of the tube, b) a number of transverse walls (13) carrying valve flaps (4), said transverse walls being secured in a fluid tight manner to the upper part (14), possibly also to the lower part (15), in the space delimited by these components and with a longitudinal spacing corresponding to the length of the first (7a-7k) and second (8a- 8k) chambers, and c) a number of flexible membranes (9), the longitudinally extending sides of which are secured between the lat eral flanges (11' and 11" respectively) of the upper(14) and lower (15) part, and the transversally extending sides of which are secured in a fluid-tight manner to the transverse walls (13), whereas the lateral flanges (11' and 11" respectively) of the upper (14) and lower (15) part are secured in a fluidtight manner to each other and to the longitudinal edges of the membranes (9), preferably by that the lateral flanges with the longitudinal edges of the membranes placed between them and the possible longitudinal fibre reinforcing are stacked and joined in a fluidtight manner, such as by welding, thus forming outwardly protruding lateral fins (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK3475/82 | 1982-08-03 | ||
| DK347582A DK148925C (en) | 1982-08-03 | 1982-08-03 | PLANT TO USE THE ENERGY IN A SURFACE WAVER, EX. BULK ON A SURFACE SURFACE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0115511A1 true EP0115511A1 (en) | 1984-08-15 |
Family
ID=8123318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83902524A Withdrawn EP0115511A1 (en) | 1982-08-03 | 1983-08-01 | A method of utilizing the energy in the surface waves in a body of liquid, such as waves on the surface of an ocean, and equipment for carrying out said method |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0115511A1 (en) |
| JP (1) | JPS59501374A (en) |
| AU (1) | AU1824983A (en) |
| DK (1) | DK148925C (en) |
| GB (1) | GB2133477A (en) |
| NL (1) | NL8320232A (en) |
| NO (1) | NO841311L (en) |
| WO (1) | WO1984000583A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2218156A (en) * | 1988-04-26 | 1989-11-08 | Hydro Energy Ass Ltd | Pneumatic hydro-electric power conversion apparatus |
| GB2282188B (en) * | 1993-09-24 | 1997-04-02 | Edward Dyson | Improvements in and relating to the generation of electricity |
| NO313704B1 (en) * | 1997-12-22 | 2002-11-18 | Amoco Norway Oil Co | Oil collection system on water |
| GB0124896D0 (en) * | 2001-10-17 | 2001-12-05 | Farley Francis J M | Flexible beam with pumping means |
| GB2418960A (en) * | 2004-10-05 | 2006-04-12 | Iain David Roberts | Breakwater wave energy converter |
| GB0428198D0 (en) * | 2004-12-22 | 2005-01-26 | Salt Anthony | Energy extraction apparatus and method |
| US8429910B2 (en) | 2005-08-02 | 2013-04-30 | Syed Mohammed Ghouse | Free floating wave energy converter |
| NZ566247A (en) * | 2005-08-02 | 2011-09-30 | Syed Mohammed Ghouse | Free floating wave energy converter with flexible pipe connected to inflexible inlet pipe with bouyancy tank |
| GB2434840B (en) | 2006-02-04 | 2011-10-19 | Francis James Macdonald Farley | Distensible tube wave energy converter |
| GB2458630A (en) * | 2008-02-28 | 2009-09-30 | Aws Ocean Energy Ltd | Deformable wave energy converter with electroactive material |
| BG66042B1 (en) * | 2008-06-10 | 2010-11-30 | Генчо СТАЙНОВ | A device for transforming the sea wave energy |
| US8120195B2 (en) * | 2008-07-23 | 2012-02-21 | Single Buoy Moorings, Inc. | Wave energy converter |
| GB2475049A (en) * | 2009-11-03 | 2011-05-11 | Norman West Bellamy | Pneumatic wave compressor for extracting energy from sea waves |
| CL2009002049A1 (en) * | 2009-11-09 | 2010-02-26 | Requena Rivera Rodolfo | Device for pumping seawater using the movement of the sea and waves, it has a flexible aqueduct composed of a set of elastic pipes with floats, a coupling piece and a unidirectional valve at the ends, said pipe attached to a tank that pivots in a fixed structure to seabed. |
| GB201100606D0 (en) * | 2011-01-14 | 2011-03-02 | Checkmate Seaenergy Ltd | Wave energy machine |
| US9771921B2 (en) | 2011-07-22 | 2017-09-26 | Syed Mohammed Ghouse | Free floating wave energy converter with control devices |
| CN103994018B (en) * | 2014-06-11 | 2016-08-24 | 董万章 | Wave energy synthetical collection power generating device by conversion |
| GB2554407B (en) * | 2016-09-26 | 2020-12-30 | Fortitudo Maris Ltd | Wave energy capture system |
| CN107167298B (en) * | 2017-07-06 | 2019-10-11 | 中国船舶科学研究中心上海分部 | A kind of flexibility pipe component wave energy experimental rig and its test method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK78530C (en) * | 1951-05-17 | 1954-11-29 | Ejnar Moelgaard Villadsen | Machine for extracting energy from waves in water. |
| GB1580805A (en) * | 1976-05-26 | 1980-12-03 | French M | Water wave energy conversion device using a flexible walled enclosure |
| GB2007314B (en) * | 1977-10-13 | 1982-03-24 | British Petroleum Co | Wave energy device |
| GB2024957A (en) * | 1978-07-06 | 1980-01-16 | British Petroleum Co | Wave energy device |
| US4313716A (en) * | 1979-05-10 | 1982-02-02 | Texaco Inc. | Articulated, energy converting structure |
| US4375151A (en) * | 1979-10-03 | 1983-03-01 | French Michael J | Control in wave energy conversion device employing a flexible walled enclosure |
-
1982
- 1982-08-03 DK DK347582A patent/DK148925C/en not_active IP Right Cessation
-
1983
- 1983-08-01 WO PCT/DK1983/000074 patent/WO1984000583A1/en unknown
- 1983-08-01 AU AU18249/83A patent/AU1824983A/en not_active Abandoned
- 1983-08-01 JP JP58502591A patent/JPS59501374A/en active Pending
- 1983-08-01 EP EP83902524A patent/EP0115511A1/en not_active Withdrawn
- 1983-08-01 GB GB08407200A patent/GB2133477A/en not_active Withdrawn
- 1983-08-01 NL NL8320232A patent/NL8320232A/en unknown
-
1984
- 1984-04-03 NO NO841311A patent/NO841311L/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8400583A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DK347582A (en) | 1984-02-04 |
| GB2133477A (en) | 1984-07-25 |
| DK148925C (en) | 1986-05-12 |
| AU1824983A (en) | 1984-02-23 |
| DK148925B (en) | 1985-11-18 |
| NL8320232A (en) | 1984-07-02 |
| GB8407200D0 (en) | 1984-04-26 |
| WO1984000583A1 (en) | 1984-02-16 |
| JPS59501374A (en) | 1984-08-02 |
| NO841311L (en) | 1984-04-03 |
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