WO2013019214A1 - Convertisseur d'énergie des vagues immergé - Google Patents

Convertisseur d'énergie des vagues immergé Download PDF

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Publication number
WO2013019214A1
WO2013019214A1 PCT/US2011/046222 US2011046222W WO2013019214A1 WO 2013019214 A1 WO2013019214 A1 WO 2013019214A1 US 2011046222 W US2011046222 W US 2011046222W WO 2013019214 A1 WO2013019214 A1 WO 2013019214A1
Authority
WO
WIPO (PCT)
Prior art keywords
prime movers
wave
fluid
fluid column
energy
Prior art date
Application number
PCT/US2011/046222
Other languages
English (en)
Inventor
Michael Morrow
Michael DELOS-REYES
Original Assignee
Oregon Energy Innovations, Llc
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 Oregon Energy Innovations, Llc filed Critical Oregon Energy Innovations, Llc
Priority to PCT/US2011/046222 priority Critical patent/WO2013019214A1/fr
Publication of WO2013019214A1 publication Critical patent/WO2013019214A1/fr

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
    • F03B13/148—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 static pressure increase due to the wave
    • 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

  • Marine Hydrokinetic (MHK) Devices convert energy in ocean waves into usable electricity. These devices are typically buoys or platfonns floating on the surface of the ocean. At the surface these devices are challenged with extreme weather conditions, mooring challenges, and conflicts with wildlife and other ocean users. A device that resides on the ocean floor has a survivability and stakeholder acceptance benefit compared to surface devices.
  • the invention is a wave energy converter that harnesses pressure gradients below the surface of waves. A summation of pressure gradients from a large area is harnessed and directed to a "central" energy harvesting component.
  • Fig. 1 is a schematic side elevation view of a submerged wave energy converter embodying the subject invention.
  • Fig. 2 is a schematic plan view of alternate embodiments.
  • Fig. 3 is a schematic side elevation view showing operational details.
  • Fig. 4 is a schematic side elevation view showing how the wave energy converter operates.
  • Fig. 5 is a schematic side elevation view showing how the wave energy converter operates.
  • Fig. 6 is a schematic side elevation view showing the wave energy converter in another environment.
  • Fig. 7 is a schematic side elevation view showing the wave energy converter in yet another environment.
  • An energy converter apparatus 13 harnesses oscillating pressure gradients 12 below the surface of a wave 6. These oscillating pressure gradients 12 are aggregated across a large area of prime movers 1 and focused into a connecting structure 2 leading to an energy conversion device such as a turbine 3. The oscillating pressure gradient 12 is harnessed by creation of an oscillating fluid column 7 using prime movers 1 within the apparatus as shown in Figs. 2 and 4.
  • a wave 6 is shown over the apparatus at a given moment in time.
  • the water column height of the peak of the wave 6 is relatively high over the prime mover A 16, leading to a high relative static pressure P(a) 8 at the prime mover A 16.
  • the water column height of the trough of wave 6 is relatively low over the prime mover B 17, leading to a low relative static pressure P(b) 9 at the prime mover B 17. Due to the pressure P(a) 8 at the prime mover A 16 being greater than the pressure P(b) 9 at the prime mover B 17, a pressure gradient is created within the apparatus which leads to fluid flow in the connecting stmcture 2.
  • the apparatus is sized such that the cycle is reversed once a wave 6 propagates a distance equal to approximately 1 ⁇ 2 wavelength and the pressure differential is reversed.
  • two prime movers 1 are shown attached to a connecting stmcture 2 which connects the prime movers to an energy conversion device such as a turbine 3 at the center of the apparatus, as shown in Fig. 5.
  • the overall apparatus is nominally oriented horizontally with the energy conversion device 3 between the prime movers 1.
  • the prime movers are deformable surface volumes.
  • the physical characteristics of the prime movers 1 are selected such that they may deform or deflect under pressure gradients of the appropriate magnitude, and the prime movers 1 generally operate cyclically out of phase with each other.
  • the prime movers 1 will be in a movable piston 5 configuration such as in Fig. 3b or other instantiations involving a displaceable surface region.
  • the two prime movers 1 operate via cyclical action including, but not limited to, inflation, deflation, filling, draining, or translation in response to the local, dynamic pressure under a passing wave 6 as shown in Fig. 4, where the pressure at point Pa (8) is different than the pressure at Pb (9) due to the passing wave 6.
  • This cyclical action leads to fluid flow within the oscillating fluid column 7 when the oscillating fluid column is located in or near the connecting structure 2.
  • One means of extracting energy from the oscillating fluid column 7 is to have the oscillating fluid column 7 pass through a device that converts fluid flow into rotary motion, hi this embodiment a device for such energy conversion is a bidirectional turbine 3.
  • the bidirectional turbine 3 is coupled with cyclically operating prime movers.
  • the connecting structure 2 may be a single structure or series of connecting stmctures 2 formed from rigid or flexible materials including but not limited to rigid pipes, rigid tubes, corrugated pipes, or similar materials.
  • the connecting structure 2 may be oriented in a straight line as in Fig. 5 or multiple connecting structures 2 may be arrayed axially as in Fig. 2 or in a parallel fashion.
  • the connecting structures 2 may be of similar or dissimilar lengths.
  • the prime movers 1 may be generally captured or enclosed by a structure 4 such as a protective casing or bunker as shown in Fig. 3, or they may be free floating in the water column. While the wave energy converter 13 is shown as being horizontally oriented in Fig. 5, it is envisioned that the apparatus can also be mstalled in non-horizontal orientations, as shown in Fig. 6, due to benthic terrain.
  • the apparatus may be installed on the floor of a ocean/bay/river/etc, or it may be elevated from the floor such as on stilts 14 or tethers 15 as illustrated in Fig. 7.

Landscapes

  • 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 un appareil permettant de récupérer l'énergie des vagues, de convertir l'énergie des vagues, comme les fluctuations de pression sous les vagues, en une colonne de fluide oscillante à l'intérieur de l'appareil. La colonne de fluide oscillante est utilisée pour alimenter une turbine ou un dispositif similaire qui est en communication fluidique avec la colonne de fluide oscillante pour produire de l'électricité.
PCT/US2011/046222 2011-08-02 2011-08-02 Convertisseur d'énergie des vagues immergé WO2013019214A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2011/046222 WO2013019214A1 (fr) 2011-08-02 2011-08-02 Convertisseur d'énergie des vagues immergé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2011/046222 WO2013019214A1 (fr) 2011-08-02 2011-08-02 Convertisseur d'énergie des vagues immergé

Publications (1)

Publication Number Publication Date
WO2013019214A1 true WO2013019214A1 (fr) 2013-02-07

Family

ID=47629563

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/046222 WO2013019214A1 (fr) 2011-08-02 2011-08-02 Convertisseur d'énergie des vagues immergé

Country Status (1)

Country Link
WO (1) WO2013019214A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4053396A1 (fr) * 2021-03-01 2022-09-07 The University of North Florida Board of Trustees Système intégré pour une extraction continue optimale de l'énergie potentielle dérivée des vagues

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060225416A1 (en) * 2002-12-31 2006-10-12 North Vaughn W Underwater wave/energy transducer
US20090007557A1 (en) * 2006-02-04 2009-01-08 Atkins Limited Distensible tube wave energy converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060225416A1 (en) * 2002-12-31 2006-10-12 North Vaughn W Underwater wave/energy transducer
US20090007557A1 (en) * 2006-02-04 2009-01-08 Atkins Limited Distensible tube wave energy converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4053396A1 (fr) * 2021-03-01 2022-09-07 The University of North Florida Board of Trustees Système intégré pour une extraction continue optimale de l'énergie potentielle dérivée des vagues

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