Solving drought with renewable energy April 2015
www.seadov.com
Slide 2
a new combination of proven technologies for carbon-neutral
delivery of fresh water 1.The platform: A stable, seaworthy tanker
hull, anchored a few miles offshore where wind and wave energy are
strong and consistent and water is clean 2.Multiple renewable
energy sources: 2.1 Wind turbines above deck 2.2 Oscillating water
column wave energy converters in hull 2.3 Solar photovoltaics on
deck 2.4 Marine current turbines under hull where applicable 3.
Fresh water produced by reverse osmosis (RO) desalination plant
housed in hull and piped to shore 4. Surplus energy can be exported
to shore by cable, or energy can be imported if at any time the
multiple energy sources are not enough to power the desalination
plant 5. Cost estimates indicate that Seadov will be profitable
selling water at the same price Poseidon will receive for water
from the Carlsbad, San Diego plant.
Slide 3
Published capacities and capital costs for large desalination
plants in Australia and California, compared with typical and best
case Seadov costs. Location/type of plantCapacity, ML/d Total cost
$mUnit cost, $m/ML/d Completion year Kwinana Western
Aust1233873.152006 Gold Coast, Queensland12512009.62008 Sydney,
NSW25018007.22010 Adelaide, SA300180062011 Melbourne,
Vic4114000?9.732012 Binningup Western Aust1009559.552013 Carlsbad,
Calif.1901000 1 5.262016 Seadov Aframax tanker45*130*2.89 Seadov
Purpose-built vessel 60*120*2.00 2 * Estimated. 1 Includes a
pumping station, product water storage and a 15 km finished water
conveyance pipeline. 2 Best case scenario.
Slide 4
The ongoing energy cost, a major component of onshore
mains-powered plant costs as shown below, would be essentially
eliminated with Seadov. We have calculated that Seadov units could
operate profitably selling water at USD 2000 per acre foot or $1.60
per kL, the same price the Carlsbad water agencies will pay
developer Poseidon Resources Corporation
Slide 5
Tanker or similar hull with superstructure & engines
removed, with adjustable water ballast so it rolls in resonance
with ocean swells to maximize energy capture Horizontal or vertical
axis wind turbines on deck Reverse osmosis (RO) desalination plant
in hull uses energy to produce fresh water hull modified to house
oscillating water column wave energy converters and efficient
turbines and generators solar on deck Seadov is based on an unique
combination of proven technologies, with some innovations tidal
turbines under hull
Slide 6
Minimizing uncertainty for investors 1.The platform: Oil
tankers are a mature technology, available at a known price. They
are designed to move through the water, so are easily deployed -
and unlikely to sink like some other wave energy devices e.g.
Osprey, Oceanlinx, OPT. 2.Multiple renewable energy sources using
proven technologies: 2.1 Wind turbines (horizontal axis) are a
mature technology, available at a known price and energy production
is predictable at a given site. Large vertical axis wind turbines
have advantages offshore and are being developed in France 2.2
Oscillating water column wave energy converters are proven 2.3
Solar photovoltaics are a mature technology, now cheaper than ever
2.4 Marine current turbines are proven, now being developed
commercially 3.Fresh water: RO desalination modules are available
off the shelf at known prices and known production per kWh.
4.Subsea pipelines and power cables are well established
technologies.
Slide 7
Seaworthy ships have been around for hundreds of years, using
wind power
Slide 8
In recent years seaworthy single skin oil tankers have been
phased out and sold at scrap-metal prices World's biggest ship
graveyard - where huge tankers and cruise liners are scrapped on
the shorefront and workers toil for 2 a day.
http://www.dailymail.co.uk/news/article-
2324339/Worlds-biggest-ship-graveyard--huge-tankers-cruise-liners-scrapped-shorefront-workers-toil-2-
day.html#ixzz2lXAa9ddT http://www.dailymail.co.uk/news/article-
2324339/Worlds-biggest-ship-graveyard--huge-tankers-cruise-liners-scrapped-shorefront-workers-toil-2-
day.html#ixzz2lXAa9ddT
Slide 9
Some recycled oil tankers are used as FSO (Floating Storage
& Offtake) vessels, i.e. seaworthy, semi-permanently moored
storage tanks. SEADOV Managing Director Capt. Phil Griffin, a
marine management consultant and former ships master, got the idea
of using a tanker hull like a FSO as a platform to harness wind and
wave energy. These vessels can survive the worst storms, even in
some very stormy places like the Timor Sea, notorious for cyclones,
and New Zealands Cook Strait, a very rough stretch of water
Slide 10
Aft mooring lines wrap around a winch drum which can rotate
when tension on upwind line exceeds a preset value, allowing stern
to swing downwind, driving winch and generating power. Phil
proposed an Active Dynamic Beam-to-Weather Mooring Configuration
Fixed mooring at bow Stern moves upwind in fine weather vessel
winch Prevailing Wind/swell Stern moves downwind in rough weather
vessel winch Prevailing Wind/swell Hawser slacks down Hawser takes
up Phil also proposed vertical axis wind turbines on deck, and
contactedDr Brian Kirke, a vertical axis wind and hydrokinetic
turbine specialist with a knowledge of wave energy conversion and
desalination Phil also proposed vertical axis wind turbines on
deck, and contacted Dr Brian Kirke, a vertical axis wind and
hydrokinetic turbine specialist with a knowledge of wave energy
conversion and desalination
Slide 11
Interest in large floating VAWTs is growing Skwid, floating
wind/tidal turbine, Japan, 2014 (on ship for transportation)
Inflow/Vertiwind, France: 35 kW validation 2009, 3x2MW floating
planned Deep Wind Concept, Denmark, 2009 UK: The NOVA project 10MW
Aerogenerator X concept, 2010 Spinfloat 6MW floating VAWT concept
(France, 2014)
Slide 12
Wave power: the Japanese pioneered oscillating water column
(OWC) wave energy technology in the 1960s. This is the only wave
energy technology with a track record of commercial success The
KAIMEI, a floating OWC, 80 m long and 12 m wide. Open sea tests
were carried out off Japan from 1978 to 1986. Air chambers are
aligned on the side of the vessel, which faces into oncoming seas.
Yoshio Masuda developed a navigation buoy with an air turbine
(1964-65), of which more than one thousand were produced. Dr.
Michael McCormick, a world- renowned ocean wave authority did work
on OWCs in the early 1970s, developed self-rectifying air- turbines
and worked on the integration of reverse osmosis and the McCabe
Wave Pump to produce potable water.
Slide 13
SEADOV-sponsored research at the University of Adelaide, South
Australia, has demonstrated our unique resonant roll concept 2-D
Tanker model with OWCs in lab tank with wave approaching from the
left and only small ripples on the far side, indicating efficient
energy capture.
Slide 14
1. BMT Design & Technology has developed a novel concept
design to aid in the relief of the growing global water shortage.
http://www.bmtdesigntechnology.com.au/design-
solutions/floating-desalination-plant/ 2. Water Standard Company
had the same idea. But its no longer on their website 3. So did
Babcock and Brown: A groundbreaking seawater desalination vessel
has been developed to offer alternative water solutions...
(www.energy-focus.co.uk)www.energy-focus.co.uk Others had the idea
of desalination in a ship hull But none of them used the plentiful
renewable energy available offshore