GB2445623A - Partially flooded float for tide engine - Google Patents
Partially flooded float for tide engine Download PDFInfo
- Publication number
- GB2445623A GB2445623A GB0700784A GB0700784A GB2445623A GB 2445623 A GB2445623 A GB 2445623A GB 0700784 A GB0700784 A GB 0700784A GB 0700784 A GB0700784 A GB 0700784A GB 2445623 A GB2445623 A GB 2445623A
- Authority
- GB
- United Kingdom
- Prior art keywords
- set forth
- chambers
- receptacle
- water
- divided
- 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- Withdrawn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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000005611 electricity Effects 0.000 claims abstract description 9
- 238000010612 desalination reaction Methods 0.000 claims abstract description 4
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims 2
- XMQFTWRPUQYINF-UHFFFAOYSA-N bensulfuron-methyl Chemical compound COC(=O)C1=CC=CC=C1CS(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 XMQFTWRPUQYINF-UHFFFAOYSA-N 0.000 claims 1
- 230000005484 gravity Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 abstract description 5
- 239000013535 sea water Substances 0.000 description 7
- 239000012528 membrane Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 235000012206 bottled water Nutrition 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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
- F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
- F03B13/262—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the relative movement between a tide-operated member and another member
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/144—Wave energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oceanography (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
A tidal power generator comprises a float 4 which is partly filled with water 2 and partly with air 1. The float is therefore ballasted and transmits force as it moves due to the tide during both rising and falling. The force may be used to generate electricity, compress air, or to drive a reverse osmosis desalination unit. The water and air may be held in separate containers, and the container, or part of the container which is filled with water may be further subdivided to provide baffles which limit undesired movement of the ballast water. The use of water as ballast avoids the need to transport and install heavy weights as the chamber(s) may be flooded on site.
Description
Tide Engine The problem of access to clean potable water is becoming a
more and more important issue as climate change and the resultant displacement of populations becomes an ever more harsh reality.
There is also an ever increasing need for electricity to be derived from renewable sources as opposed to burning more fossil fuel This invention provides a device for and method of harnessing the renewable energy of the tides to produce potable water by powering a pump which forces salty or contaminated water to come into contact under pressure with a semi-permeable membrane which will only allow the solvent (water) to pass whilst the concentrated sea water (brine) is dispersed back into the sea The mvention also provides a device and method of harnessing the renewable energy of the tides to produce electricity by powering a pump which pumps sea, river or estuanal water through a turbine which in turn drives a generator to produce electricity The invention also provides a device and method of harnessing the renewable energy of the tides to produce compressed air by powering a compressor to compress air which can then be stored in pressure vessels for use later The device requires there to be a height difference between high and low tide arid thus the device can be used in coastal or estuarial waters or out at sea wherever there is such a tidal difference.
Using a float mechanism to harness the energy in tidal rise and fall has been described in: G82401405, US200407 1566, W09820254, JP6093952, US2003 189000, K1R83000 1627, KR20020075097, JP200535 1201 All these either incorporate the use of addthonal weight / weights to accomplish the work described therein or they rely on the inherent weight of the float to deliver any necessary force to the respective mechanisms GB 1262261 uses a float that is filled and emptied but it too relies on an additional weight incorporated in the mechanism for its operation. Filling and emptying the float may require additional complexity and may also result in a loss of head of water at high and low tide as the float niode changes from buoyancy' to weight', and this may result in a loss in efficiency of the device.
The use of additional weights and/or heavy floats may limit the power of some these devices and can make manufacture more complex and costly. For very large scale operation, the necessity of incorporating very large weights into a mecharnsm may lead to non-viability.
Statement of the invention
a) The idea is to extract the power that can be obtained from the up and down movement of the sea. Energy can be extracted both on the upstroke (rising tide) and the downstroke (falhng tide) The amount of power that can be obtained is proportional to the volume of water harnessed and to the head of water The head of water is determined by the tidal range at any particular site and the larger the tidal range, the greater is the amount of power that can be obtained.
Similarly, the larger the volume of water harnessed or put to work', the greater the obtained power. This invention provides a way of maximising the power or energy extracted by providing the means of maximising the mass of the receptacle (sinker' or weight mode) on the downstroke and the buoyancy of the receptacle (float mode) on the upstroke b) In its preferred or basic form, the invention incorporates a double chamber float or receptacle arranged vertically.
c) In an alternate form, the invention can incorporate multiple double chamber receptacles connected to each other -a receptacle assembly.The device may incorporate multiple interconnected double chamber receptacles and/or receptacle assemblies.
d) Also, a basic open receptacle shape', half full of seawater cold be utilised, but this would suffer from ingress or spillage of water e) A single chamber closed receptacle could also be used, but this might suffer from excessive internal water movement possibly leading to unwanted lateral oscillations of the device due to sea surface movement affects The preferred form would have baffles incorporated to limit unwanted lateral movement.
g) The double chamber receptacle or receptacle assembly is mounted in a frame which allows connections to be made to movement guides and to the means of transmitting the forces generated The forces generated are delivered to a second device mounted on the sea bed or on a lower frame.
g) The movement guides are optionally connected to the lower frame which is tied to the sea bed.
h) The upper receptacle or upper receptacle assembly is to contain air, the lower receptacle or lower receptacle assembly is to contain water i)Optiorially, the upper arid lower receptacles will be equipped with re-sealable filling cavities i) When the tide is falling the weight of the lower receptacle or receptacle assembly is transmitted to a second device via a coupling or force transmitter k) When the tide is rising the upwards force arising from the buoyancy of the upper part of the double chamber receptacle or receptacle assembly is transmitted to the second device via the coupling or force transmitter 1) The coupling or force transmitter can be but is not limited to a frame which supports and constrains the double chamber receptacle or receptacle assembly connected to a single or multiple rods or tubes mounted underneath the lower part of the receptacle m) The force transmitter will have a means of attachment incorporated such that a suitable connection may be made to a second device m) This can be but is not limited to one or a number of holes through the end of a force transmission rod such that a piston may be bolted securely to same.
n) An alternative can be to include an integrally welded or engineered piston at the of the force transmitter o) Another alternative is a force transmission coupling precision engineered to engage with the mechanism of the power receiving equipment p) Suggested method of use when attached to a device for producing pure water: In the suggested use, the force transmitter is securely bolted to a system of twin pistons set in a cylinder connected to the lower framework of the invention.
The lower piston moves upwards on the rising tide and compresses the sea water against a suitable semi-permeable membrane. Purified water passes through the membrane to a water collection vessel.
On the down stroke of the lower piston (on the falling tide), the lower cylinder is replenished by fresh seawater entering through a filter to a non return valve or valves The upper piston moves downwards on the falling tide compressing the seawater, forcing the solvent (water) through a second membrane and into the water collection vessel. The upper piston moves upwards on the rising tide and the upper cylinder is replenished with fresh seawater entering through a non return valves q) The expert practitioners of the art relating to the known desalination of water using semi-permeable membrane techniques will be able to suggest other tried and tested methods of making use of the available water pressure.
r) The double chambered receptacle may be cylindrical, or may have a triangular, rectangular, square or hexagonal or any other regular or irregular cross section.
s) The receptacle assembly can be manufactured in a number of materials such as (but not limited to) moulded polythene, aluminium, stee' I) The size of a receptacle and of a receptacle assembly or a device is completely scalable u) An advantage of the invention is that no special heavy weights are required -receptacle assemblies can be towed or floated out to sea and filled (usually with sea water) in situ v) Another advantage is that the size of a double chamber receptacle and of a receptacle assembly or a device is completely scalable.
pv pa( &t ov' -w y--,, Drawings,bUI o4) -Sk#i Q' Fig I Double Float Receptacle attached to guides attached to a sea-bed frame Fig 2 A device comprising 11 assembly of receptacles Fig 3 A schematic example indicating use of the invention device to produce potable water using a reverse osmosis second device Fig 4. A schematic example indicating use of the invention device to produce electricity using a pressurised water turbine Fig 5. A schematic example indicating use of the invention device to produce compressed air using n air compressor.
Fig 6, A schematic illustration showing the invention device standing alone Ic with no second device fitted Fig 7 A schematic illustration of the invention device connected to a second device mounted on a sea-bed frame Fig 8 A schematic illustration of the invention device with connections to a second device mounted directly on the sea-bed Fig 9. Some examples of receptacles.
Numbers used in the illustrations I Air Chamber 2 Water Chamber 3 Sea Bed 4 Receptacle with frame Force transmitter 6 A second device 7 A seabed mounted frame 8 Supertanker 9 Schematic where second device is a desalination device Semi-permeable membrane 11 Water collection vessel 12 To surface water collection vessel or pipe to shore 13 Piston 14 Receptacle inter connection Cylinder 16 Connection between second device and frame 17 Sea-bed or sea-bed mounted frame 18 Non return valve 19 Schematic illustration of second device as electricity generator Pump 21 Turbine and Generator 22 Electricity cable control and connection board 23 Electricity cable to shore station.
24 Receptacle Receptacle assembly 26 Schematic of example of second device as air compressor 27 Compressed air vessel 28 Intcrconnections between receptacles/receptacle assemblies 29 Mounting for second device double chambered receptacle 31 Guidance rods 32 Sea level 33 Second device mounted directly on sea-bed 34 Sealable filling points double receptacle with baffles 36 Three tiered receptacle with baffles in the water chamber 37 Open receptacle.
Claims (1)
- Claims I) A first device for harnessing renewable energy from the riseand fall of the tide comprising.a receptacle which can be of any shape which can float in water arid he part filled with any type of water and part fitted with air and which is designed to be part filled with any type of water and partly filled with air such that it becomes a heavy object which has buoyancy and exerts a consequent upwardly directed force more or less equal in magnitude to a downwards directed force which it exerts and which is a result of the effect of gravity on the partly filled receptacle; wherein a means is provided for the upwards directed force to be transmitted to a second device and, wherein a means is provided for the downwards directed force to be transmitted to said second device 2) The first device as set thrth in claim I wherein the receptacle is open 3) The first device as set forth in claim I wherein the receptacle is closed.4) The first device as set forth in claim I wherein the receptacle is closed and wherein the receptacle is divided mto two or more chambers.5) The first device as set forth in claim I wherein the receptacle is closed and wherein the receptacle is divided into two or more chambers by a means of dividing said two or more chambers.6) The first device as set forth in claim 5 wherein the receptacle is open 7) The first device as set forth in claim 5 wherein the chambers are arranged vertically one above the other.8) The first device as set forth in claim S wherein the chambers are arranged horizontally.9) The first device as set forth in claim 7 wherein the chambers are further sub-divided by a means of dividing the chambers in a vertical manner.10) The first device as set forth in claim 8 wherein the chambers are further sub-divided by a means of dividrng the chambers in a vertical manner.11) The first device as set forth in claim 7 wherein the chambers are further sub-divided by a means of dividing the chambers in a horizontal manner.12) The first device as set forth in claim 8 wherein the chambers are further sub-divided by a means of dividing the chambers in a horizontal manner.13) The first device as set forth in claim 6 wherein the chambers are arranged vertically one above the other.14) The first device as set forth in claim 6 wherein the chambers are arranged honzontally 15) The first device as set forth in claim 13 wherein the chambers are further sub-divided by a means of dividing the chambers in a vertical manner.15) The first device as set forth in claim 14 wherein the chambers are further sub-divided by a means of dividing the chambers in a vertical mariner 16) The first device as set forth in claim 13 wherein the chambers are further sub-divided by a means of dividing the chambers m a horizontal manner 17) The first device as set forth in claim 14 wherein the chambers are further sub-divided by a means of dividing the chambers in a horizontal manner.18) The first device as set forth in claims 2 -18 inclusive wherein a means is provided which is suitable for the entry of water into the said chambers and said means is also suitable for sealing chamber against water leakage.19) The first device as set forth in claims 2 -18 inclusive wherein a means is provided which is suitable for the entry of air into the said chambers and said means is also suitable for sealing chamber against air leakage.20) The first device as set forth in claims 2 -19 inclusive wherein a means is provided for joining said receptacles together such that they rise and fall as one as the tide rises and falls 21) The first device as set forth in claims 1 -20 inclusive wherein the means provided for transmitting the forces generated by the first device to the second device is connected to a frame attached to the receptacle or receptacles 22) The first device as set forth in claim 21 wherein the frame is integral with the receptacle or receptacles.23) The first device as set forth in claim 21 and 22 wherein the means provided for transmittmg the forces generated by the first device to the second device acts as a piston 24) The first device as set forth in claim 21 and 22 wherein the means provided for transmitting the forces generated by the first device to the second device acts as a set of pistons 25) The first device as set forth iii claim 21 and 22 wherein the means provided for transmitting the forces generated by the first device to the second device acts as a push rod 26) The first device as set forth in claim 21 and 22 wherein the means provided for transmitting the forces generated by the first device to the second device acts as any means of moving water 27) The first device as set forth in claim I wherein the second device is an air compressor.28) The first device as set forth in claim I wherein the second device is an electricity generator.29) The first device as set forth in claim I wherein the second device is a reverse osmosis desalination device.30) The first device as set forth in claims 1 -29 inclusive wherein there is rio restriction on the size, weight or buoyancy of the receptacle or receptacles.31) The method as set forth in clauns 1 -30 inclusive wherein a means is provided for harnessing the power inherent in the rise and fall of the tide and delivers it in the form of a vertically reciprocating tool means.32) The first device as set forth in claims I-30 inclusive wherein the receptacle or receptacles are connected by a frame or by an integral receptacle or receptacles frame to a means of guiding the vertical movement of said receptacle or receptacles and which said means of guidance is attached to the sea-bed or attached to a means of providing a frame which is attached to the sea-bed.33) The first device as set forth in claim 32 where the receptacle or receptacles are connected to multiple means of guidance.34) l'he first device as set forth in claim 32 and claim 33 wherein the means of guidance provide lateral and vertical support to the device.35) The first device as set forth in claim 32 and claim 33 wherein means of support are connected to one or many of the said frames 36) The first device as set forth in claims 32 -35 wherein the said frames include a means of attachment to the second device as set forth m claims 1, 27, 28 and 29,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0700784A GB2445623A (en) | 2007-01-15 | 2007-01-15 | Partially flooded float for tide engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0700784A GB2445623A (en) | 2007-01-15 | 2007-01-15 | Partially flooded float for tide engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0700784D0 GB0700784D0 (en) | 2007-02-21 |
| GB2445623A true GB2445623A (en) | 2008-07-16 |
Family
ID=37810005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0700784A Withdrawn GB2445623A (en) | 2007-01-15 | 2007-01-15 | Partially flooded float for tide engine |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2445623A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089533A (en) * | 2012-03-09 | 2013-05-08 | 大连理工大学 | Tidal current energy unsteady state pressurization sea water desalination and generating set |
| WO2015025193A1 (en) * | 2013-08-21 | 2015-02-26 | NIMMANOP, Rachanida | Tidal energy seawater desalination system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191218101A (en) * | 1912-08-06 | 1913-03-06 | Daniel Mould | Improvements in Tidal Motors. |
| FR516342A (en) * | 1920-06-04 | 1921-04-16 | Georges Marzac | System of production of force by tides |
| US4598211A (en) * | 1984-01-16 | 1986-07-01 | John Koruthu | Tidal energy system |
| DE3720872A1 (en) * | 1987-06-24 | 1989-01-05 | Kurt Meyer | Tidal power station |
| GB2282644A (en) * | 1993-10-09 | 1995-04-12 | Jeffrey Lenoy Whitear | Tidal power generator |
| US20030189000A1 (en) * | 2002-04-04 | 2003-10-09 | Christian Stark | Barge-mounted tidal-powered desalinization system |
-
2007
- 2007-01-15 GB GB0700784A patent/GB2445623A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191218101A (en) * | 1912-08-06 | 1913-03-06 | Daniel Mould | Improvements in Tidal Motors. |
| FR516342A (en) * | 1920-06-04 | 1921-04-16 | Georges Marzac | System of production of force by tides |
| US4598211A (en) * | 1984-01-16 | 1986-07-01 | John Koruthu | Tidal energy system |
| DE3720872A1 (en) * | 1987-06-24 | 1989-01-05 | Kurt Meyer | Tidal power station |
| GB2282644A (en) * | 1993-10-09 | 1995-04-12 | Jeffrey Lenoy Whitear | Tidal power generator |
| US20030189000A1 (en) * | 2002-04-04 | 2003-10-09 | Christian Stark | Barge-mounted tidal-powered desalinization system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089533A (en) * | 2012-03-09 | 2013-05-08 | 大连理工大学 | Tidal current energy unsteady state pressurization sea water desalination and generating set |
| CN103089533B (en) * | 2012-03-09 | 2015-01-07 | 大连理工大学 | Tidal current energy unsteady state pressurization sea water desalination and generating set |
| WO2015025193A1 (en) * | 2013-08-21 | 2015-02-26 | NIMMANOP, Rachanida | Tidal energy seawater desalination system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0700784D0 (en) | 2007-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |