GB2459441A - Oscillating-water-column wave-energy device having a helical column - Google Patents

Oscillating-water-column wave-energy device having a helical column Download PDF

Info

Publication number
GB2459441A
GB2459441A GB0807183A GB0807183A GB2459441A GB 2459441 A GB2459441 A GB 2459441A GB 0807183 A GB0807183 A GB 0807183A GB 0807183 A GB0807183 A GB 0807183A GB 2459441 A GB2459441 A GB 2459441A
Authority
GB
United Kingdom
Prior art keywords
column
helical
water
oscillating
owc
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Withdrawn
Application number
GB0807183A
Other versions
GB0807183D0 (en
Inventor
Leslie John Duckers
Julian Edward Sydney Minns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0807183A priority Critical patent/GB2459441A/en
Publication of GB0807183D0 publication Critical patent/GB0807183D0/en
Publication of GB2459441A publication Critical patent/GB2459441A/en
Withdrawn legal-status Critical Current

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
    • F03B13/141—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector
    • F03B13/142—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector which creates an oscillating water column
    • 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
    • F05B2240/95—Mounting on supporting structures or systems offshore
    • 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
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/25—Geometry three-dimensional helical
    • 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

An oscillating-water-column (OWC) device for capturing energy from waves comprises a helical column B, C within which water can resonate. The helical column is formed by a spiral C running along the length of a column B. By having a helical column as opposed to a vertical one, the height of the wave energy device can be reduced while retaining the same column length required for resonance. The reduction in height of the column enables the device to be installed closer to shore, and operate closer to the surface of the sea. The device may comprise a central spine D, while two or three spirals C may run (collectively) clockwise or anticlockwise along the tube / column B to thereby form helical columns. A floatation buoy (A) is preferably attached to the OWC device. Preferably the oscillating water column drives an air turbine, which in turn drives a generator to produce electricity.

Description

Title: Helical Tube Oscillating Water Column Wave Energy Capture Device
Background
It is well understood that there is a large amount of energy in ocean waves. This energy has been captured in many ways, including by using an Oscillating Water Column (OWC) device.
The length of these devices is determined by the wave climate of the place where they will be deployed, by the formula: l=(g.Te"2)/(2.pi"2) where 1 is the coupling length and Te is the energy period of the waves. Using the configuration described here will allow shorter OWCs to be built. The benefits of a shorter OWC are easier deployment and access to a greater part of the wave energy which is more abundant closer the surface of the sea. The OWC may be fixed or floating.
What it does As waves pass the device, the level of water rises & falls inside device. This moves air up and down inside device and this moving air can be captured by an air turbine. The turbine output is rotational movement.
Introduction to Drawings
Figure 1 is a plan view of the device Figure 2 1. Mean water level is at A (which may be a floatation device). This floatation device is shown as a ring and is shown diagrammatically as its dimensions will depend on the size and material of the buoy. The flotation device may be mounted internally, or externally as shown here.
2. An air turbine (not shown) and power take off (not shown) are mounted within a ductlcowl (not shown) above helixes (C).
Figures 3 Cut Away Plan View Figure 4 Cut away Elevation Figure 5 Cut Away Elevation Figures 3,4and5 1. Two helixes (C) shown, but one or more could be used, and left or right handed helixes could be used.
2. Helixes (C) shown pass 360° round spine (D), but this should be adjusted to suit local conditions.
For simplicity only one pair of helixes shown, but again depending on local conditions one or more could be used, eg mounted concentrically, or adjacent to each other. Also tubes coiled round a cylinder (eg a buoy) could also be used.
Features A helical water/air pathway is made by fins contained within in a tube and completely filling it, or pipes coiled round a buoyant cylinder. This reduces overall length of the device. This leads to easier handling and maintenance. Also these devices with less draft could be located closer to shore where it is easier to connect to on-shore power demands.
Could be made of any suitable material, or combination of materials, eg Steel, Polyurethane covered foam or moulded plastic.
Examples of Applications: This device uses a self rectifying air turbine for wave energy capture. This device could be used for almost any power generating application where a rotational drive is required. This could be pumping hydraulic oil or water or via an induction generator to generate electricity.
Several devices may be joined together in a line, circle or other configuration to permit greater stability and hence improve capture efficiency.

Claims (3)

  1. Claims Title: Helical Tube Oscillating Water Column Wave Energy Capture Device 1. The Oscillating Water Column features a helical member running through a tube that effectively shortens the overall length of the device, while maintaining the length of the path that water has to follow in order to resonate.
  2. 2. Several devices may be joined together in a line, circle or other configuration to permit greater stability and hence improve capture efficiency.
  3. 3. The reduction in draft allows the Oscillating Water Column access to greater wave energy that is available closer to the surface of the sea.
GB0807183A 2008-04-21 2008-04-21 Oscillating-water-column wave-energy device having a helical column Withdrawn GB2459441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0807183A GB2459441A (en) 2008-04-21 2008-04-21 Oscillating-water-column wave-energy device having a helical column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0807183A GB2459441A (en) 2008-04-21 2008-04-21 Oscillating-water-column wave-energy device having a helical column

Publications (2)

Publication Number Publication Date
GB0807183D0 GB0807183D0 (en) 2008-05-21
GB2459441A true GB2459441A (en) 2009-10-28

Family

ID=39472413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0807183A Withdrawn GB2459441A (en) 2008-04-21 2008-04-21 Oscillating-water-column wave-energy device having a helical column

Country Status (1)

Country Link
GB (1) GB2459441A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013123446A1 (en) * 2012-02-16 2013-08-22 Lazaris Spyros A system and a method for generation. and transmission of electrical energy from renewable resources.
US8918225B2 (en) 2012-02-16 2014-12-23 Spyros J. Lazaris Renewable energy-based electricity grid infrastructure and method of grid infrastructure automation and operation
US9188109B2 (en) 2012-02-16 2015-11-17 Spyros James Lazaris Virtualization, optimization and adaptation of dynamic demand response in a renewable energy-based electricity grid infrastructure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003045A1 (en) * 1985-11-14 1987-05-21 Boenke Knut Apparatus for converting the energy in ocean waves into useful energy
GB2325964A (en) * 1997-06-05 1998-12-09 Rodney Graham Youlton Wave energy device
US20070137195A1 (en) * 2005-12-19 2007-06-21 Tayla Shashishekara S Wide bandwidth farms for capturing wave energy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003045A1 (en) * 1985-11-14 1987-05-21 Boenke Knut Apparatus for converting the energy in ocean waves into useful energy
GB2325964A (en) * 1997-06-05 1998-12-09 Rodney Graham Youlton Wave energy device
US20070137195A1 (en) * 2005-12-19 2007-06-21 Tayla Shashishekara S Wide bandwidth farms for capturing wave energy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013123446A1 (en) * 2012-02-16 2013-08-22 Lazaris Spyros A system and a method for generation. and transmission of electrical energy from renewable resources.
US8918225B2 (en) 2012-02-16 2014-12-23 Spyros J. Lazaris Renewable energy-based electricity grid infrastructure and method of grid infrastructure automation and operation
US9188109B2 (en) 2012-02-16 2015-11-17 Spyros James Lazaris Virtualization, optimization and adaptation of dynamic demand response in a renewable energy-based electricity grid infrastructure
US9200621B2 (en) 2012-02-16 2015-12-01 Spyros James Lazaris Transmission system for delivery of dynamic demand response in a renewable energy-based electricity grid infrastructure

Also Published As

Publication number Publication date
GB0807183D0 (en) 2008-05-21

Similar Documents

Publication Publication Date Title
JP5179370B2 (en) Wave energy recovery system
AU2006274564B2 (en) Free floating wave energy converter
US20070158950A1 (en) Hydroelectric Wave-Energy Conversion System
US7930885B2 (en) Water wave-based energy transfer system
US9074577B2 (en) Wave energy converter system
CN104736840B (en) wave energy conversion
US20120032444A1 (en) Wave Catcher
US20080217921A1 (en) Wave energy harnessing device
US20080054640A1 (en) Air pump in float
JP2009542964A (en) Wave energy converter
US20120117960A1 (en) Energy harnessing device
US20100171313A1 (en) Under the bottom ocean wave energy converter
EP2872772B1 (en) Wave energy converter
CA2666259A1 (en) Wave energy converter
WO2008048050A1 (en) Wave energy converter
KR101268485B1 (en) Apparatus for wave power generation
GB2459441A (en) Oscillating-water-column wave-energy device having a helical column
WO2010078940A2 (en) Apparatus for extracting energy from wave motion
ES2148105A1 (en) Plant for exploiting the tidal energy
KR20110016700A (en) Oscillating water column in wave generation system for the minimum inflow loss type
EP2321527B1 (en) Apparatus and method for tidal energy extraction
WO2019244753A1 (en) Wave power generator
WO2015157528A1 (en) Wave energy conversion system
GB2493560A (en) Energy harvesting device
PT105368B (en) ASYMMETRIC FLOATING DEVICE WAVES ENERGY CONVERTER

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)