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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Hydrok inetic Technologies Technical and
Environmental Issues Workshopthe Wave Dragon case
Erik Friis-MadsenWave Dragon ApS
Copenhagen, DK
H. C. Soerensen and Lars ChristensenSPOK/Wave Dragon ApS
Copenhagen, DK
Jens Peter KofoedHydraulics and Coastal Engineering
Aalborg University, DK
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Regions where wave energy is most feasible
1 TW 60o
30o
0o
30o
60o
The western w ind bel t w ith the wave energy density in kW/ m
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Wave Energy Conversion Techniques
Buoy
Seabed
WaveDirection
Heaving Devices Rambll, Denmark1:10 tests in open sea, 1:4scale model (2.5 m diameter)
OPT, USA, 2004
Teamwork Technology BV,The Netherlands
2 MW pilot plant deployed2004 in Portugal
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Buoyantsegments
Seabed
WaveDirection
Pitching Devices
Pelamis, Ocean Power Delivery Ltd (OPD), Scotland
Tank tests in small scales (1:80, 1:35, 1:20)
Open sea tests 1:7 (2001), 1:1 (2004), 750 kW scheme
Wave Energy Conversion Techniques
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Air Column
WellsTurbine
Seabed
ConcreteStructure
Air Flow
Generator
Wave
Direction
Oscillating Water Column
400 kW (1998), Pico Island (Azores)Fully automated, full-scale testing facility
500 kW shoreline OWC (2000)Islay (Scotland)
Wave Energy Conversion Techniques
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Wave Energy Conversion Techniques
Wave
directionKaplanTurbine
ReservoirGenerator
Seabed
Buoyancy
Overtopping Devices
Pilot plant deployed in 80s Sweden,Sea Power Intl.,
15-year contract for 1.5 MW, Shetland.
Pilot plant 1:4 deployed 2003 Denmark,Wave Dragon ApS,
Prototype 1:1 planned by 2005 Wales, UK.
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Fixed wave energy devices
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Floating wave energy devices
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Tapchan
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
SSG (Seawave Slot Cone Generator)
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Wave Dragon principle
Turbine outlet
Reservoir
Waves overtopping thedoubly curved ramp
The Wave Dragon is a slack-moored wave energy converter that can bedeployed alone or in parks wherever a sufficient wave climate and a water
depth of more than 20 m is found.
Climate Power production24 kW/m 12 GWh/y/unit36 kW/m 20 GWh/y/unit48 kW/m 35 GWh/y/unit
Wave reflector
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Wave Dragon objectives
To develop Wave Dragon to a power plant unit of4 to 11 MW with a production price of 0.04 /kWh
0,00
0,05
0,10
0,15
0,20
0,25
0,30
0,35
1985
1987
1989
1991
1993
1995
1997
1999
2001
2003
2005
/kWh Wind
Wave
Source:
EU Wave Net 2002 and Ris
Target year 2016
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
WD turbine 340mm runner has been tested.The efficiency is very high (>90%) and the noise level is very low.
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
The Wave Dragon scale 1:4.5prototype is deployed in a birdprotection area (Ramsar)
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Nissum Bredning, Denmark
The wave climate is like the test rig - scale 1:4.5 of the North Sea.
2
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Remote control
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Marine growthMarine growth on structure and mooringlines below waterline: 5-10 cm
Marine growth in turbine draft tubes reduces PTO. Non-toxic antifouling tested.
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Wild life
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Cylinder gate turbines running
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
Power plant size
1 450 50 67 67
1 00133
2 00250
40 0
667
1000
0
5 01 0 0
1 5 0
2 0 0
2 5 0
3 0 0
3 5 0
4 0 04 5 0
5 0 0
5 5 0
6 0 0
6 5 0
7 0 0
7 5 0
8 0 0
8 5 0
9 0 0
9 5 0
1 0 0 0
N o . o f u n its t o fo rm a 100 M W p o w e r p lan t
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Overtopping Wave Devices
Wave Dragon ApS/LtdHWETTEI - WorkshopOctober 26-28, 2005, Washington, DC
The Wave Dragon Vision
Seen from 100 feet above sea level and at a distance of 3 miles
One and a half year operational experience
Wave energy absorption performance verified
Offshore wave energy is a reality