Tidal Energy:

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• Tidal Energy
• Worldwide distribution
• Efficient technology
• Multiple benefits

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The Current Situation
Tidal Energy is sustainable, clean, reliable,
widely distributed, and can offer significant
benefits to many marine nations. Tidal Energy can
be captured in an efficient and cost-effective
way.
Tidal Energy is not yet recognized by the United
Nations as an energy resource that should receive
support and funding for its development.
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Tidal Energy is a clean, renewable source of
energy--such as solar, wind, biofuels, and
low-head hydro-- and deserves official
international support and funding for its
development.
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The Worldwide Distribution of Tidal Energy
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World Map of the Distribution of Tidal Energy
Red areas show most intense tidal energy
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Developing Nations that could receive significant
benefits from Tidal Energy _______________________
_________________
Indian Ocean Comoros, Madagascar, Maldives,
Seychelles. Asia China, India, Indonesia,
Korea, Philippines, Vietnam. Pacific Ocean Fiji,
Kiribati, Micronesia, Palau, Papua New
Guinea, Samoa, Solomon Islands, Timor, Tuvalu,
Vanuatu. Central and South America Argentina,
Brazil, Ecuador, Guyana, Panama,
Surinam. Atlantic Ocean Cape Verde. All coastal
nations with tidal passes between coral reefs
or offshore islands.
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Significant benefits from using Tidal Energy
include

• Electrification of isolated communities
• Generation for the grid
• Regrowth of coral reefs using mineral
  accretion technology
• Substitution of imported petroleum used to
  generate electricity

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Efficient technology to capture Tidal Energyis
already cost-effective
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• Tidal Energy can be captured
• efficiently and
• inexpensively
• using the helical
• turbine

Prof. Alexander Gorlov of Northeastern
University with the helical turbine he invented
and perfected
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Schematic view of the helical turbine mounted in
a frame.
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Features of the Helical Turbine Basic Concept

• designed for hydroelectric applications in
  free-flowing water
• operates in ocean, tidal, and river
  currents
• does not require expensive dams that can
  harm the environment

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Features of the Helical Turbine Operation

• self-starting with flow as low as 0.6 m/s
• smooth-running
• rotates in same direction regardless of
  the direction of flow, making it ideal for
  tidal applications

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Features of the Helical Turbine 35 Efficiency
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Features of the Helical Turbine Power increases
8 times when velocity doubles
I Knot 1.69 ft/sec I M/sec 3.28 ft/sec
Source GCK Technology
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Features of the Helical Turbine Installation
Cost dollars/kw
Red high estimate Blue low estimate
Source GCK Technology, Inc.
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Multiple Benefits from Tidal Energy
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Multiple Benefits from Tidal Energy. _____________
__________________________________________________
________________________________________ Practica
l Examples

1. Electrification of isolated communities
2. Power for the grid
3. Regrowth of coral reefs using mineral
   accretion technology

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1) Electrification of Isolated
Communities The Tide-Energy project near the
mouth of the Amazon
Rural residents with a 6-blade helical turbine
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The Tide-Energy project near the mouth of
the Amazon a simple generating
package
(c) Automotive alternator
(b) Pulley and belt
(a) 6-blade helical turbine
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The Tide-Energy project near the mouth of the
Amazon simple, accessible, affordable technology

• Simple
• The helical turbine rotates on a shaft with a
  pulley that runs an alternator by means of a
  belt.
• The alternator charges batteries for household
  use, as is usual with other intermittent
  sources solar and windwhen used off the grid.

• Accessible
• About 90 of a tide-powered station can be built
  using locally-available labor, materials, and
  equipment.
• Only the technically-refined helical turbine
  blades are outside components.

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The Tide-Energy project near the mouth of the
Amazon simple, accessible, affordable technology

• Affordable.
• Under local natural and economic conditions
• The investment in installation and equipment
  of a tide-energy station is only 50 of the
  comparable solar option.
• That investment is similar to the cost
  of a small, diesel-powered boat, which
  thousands of people in the region already
  own.
• The operating costs of a tide-energy station
  are less than 60 of those of the comparable
  diesel option.

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2) Power for the Grid The Uldolmok Strait Pilot
Project in Korea
1m x 2.5m GHT from GCK Technology, Inc.
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The Uldolmok Channel Pilot Project in Korea
Results and perspectives
Testing of the Gorlov Helical Turbine
manufactured by GCK Technology, Inc. was
performed by the Korea Ocean Research
Development Institute (KORDI). Successful tests
were carried out In 2002 using a 1m diameter
Gorlov Helical Turbine which produced about 10kW
in a 4 knot flow. As a result of these trials, a
larger GHT (2.2m diameter, 2.5m length) was
designed and manufactured by GCK and successfully
tested by KORDI in 2004 The GHT has also been
successfully tested on floating platforms off of
Long Island, NY and in the Merrimack River in
Massachusetts.
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3) Generation of hydrogen for fuel cells from the
electrolysis of water from tidal currents that do
not need to be in close proximity to end-users.

Detail of the Farm
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Projected Power Farm
3
1
2
The Gorlov Helical Turbine modules can be
assembled in large-scale power farms, as depicted
in the artists conception above.
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4) Regrowth of Coral Reefs Using Biorock
Technology Karang Lestari coral reef and
fisheries restoration project, Indonesia
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Biorock shore protection project at Ihuru Island,
Maldives, turned a severely eroding beach into
15 meters (50 feet) growth in a few years
Before Severe erosion
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Biorock reef in front of the beach uses
electricity to grow solid limestone rock on a
steel frame and to grow corals. This slows down
waves, causes sand to settle, and attracts fish.
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A few years later beach has grown 15 meters (50
ft.). Tidal energy can grow Biorock reefs to
protect whole islands from sea level rise,
while restoring their coral reefs and fisheries
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Biorocks technology speeds the growth of coral
reefs 3-5 times and increases survival from
severe high temperature 16-50 times. This
rapidly increases fish populations and creates
ecotourism attractions. Biorocks technology can
be used to regrow dying coral reefs throughout
the world, build coastal protection, restore
fisheries, and create mariculture
resources. Biorocks technology has been proven
in field tests in more than 20 Caribbean,
Pacific, Indian Ocean, and Southeast Asian
countries. Tidal Energy often found around coral
reefs and atolls can be used with Biorocks
technology to regrow reefs in an inexpensive,
low-maintenance way using the helical turbine.
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Conclusions

• Tidal Energy is sustainable, clean, and
  reliable.
• Tidal Energy is widely distributed and can offer
  significant benefits to many coastal nations.
• Tide Energy can be captured in a practical,
  efficient, cost-effective way.
• Tidal Energy deserves to be included on the list
  of sources of sustainable energy supported and
  funded by CSD, GEF, UNDP, IEA, UNIDO, CDM, etc.

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Contact Information
Thomas J. Goreau, Ph.D. President Global Coral
Reef Alliance 37 Pleasant Street Cambridge MA
02139 USA 1 [phone] goreau_at_bestweb.net htt
p//www.globalcoral.org
Scott D. Anderson, Ph.D. Coordinator The
Tide-Energy Project near the Mouth of the
Amazon 1 [phone] (mobile) sdand_at_bellsouth.
net
Prof. Alexander M. Gorlov Chief Technology
Officer GCK Technology, Inc. 607 Bluff Cliff
Drive San Antonio, TX 78216 1 (617)
277-0986 gorlov_at_gcktechnology.com
Mr. Edward L. Kurth President and General
Counsel GCK Technology, Inc. 607 Bluff Cliff
Drive San Antonio, TX 78216 1 (210)
496-5902 kurth_at_gcktechnology.com