“New Outline Technical Specification providing Guidance for the Design and Analysis of Ocean Thermal Energy Conversion (OTEC) systems” Martin Brown & John Griffiths, IEC PT 20 Committee
All Energy Conference, Glasgow, Thursday 7th May 2015
Introduction to IEC
The International Electrotechnical
Commission (IEC) is a not‐for‐profit, non‐
governmental organization, founded in 1906. The IEC's members are National Committees, and they appoint experts and delegates coming from industry, government bodies, associations and academia to participate in the technical and conformity assessment work of the IEC. 2
Using IEC Ocean Energy Technical Specifications
The International Committee for Ocean Energy Standards (TC/114) has published the following Technical Specs:
• IEC 62600‐100 Assessment of Performance of Wave Energy Converters
• IEC 62600‐200 Assessment of Performance of Tidal Energy Converters
Very shortly the following two will be published:
• IEC 62600‐101 Assessment & Characterisation of Wave Energy Resource
• IEC 62600‐201 Assessment of Tidal Energy Resource
We vitally need people to try using these TS's and reporting to our Ad Hoc Groups on their experiences, providing comments.
Please contact me on how to do this [email protected]
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Importance of a Technical Specification for OTEC
Reassurance for Investment community review
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Guidance for technical due diligence
OTEC (Ocean Thermal Energy Conversion) • OTEC ‐ a Fairly Well Kept Secret in Europe 5
The Oceans as a Gigantic Solar Collector
• Oceans are a huge solar collector that cover 71% of the globe
• OTEC provides a means to exploit the solar input they receive 6
Ocean Thermocline drives OTEC
• Thermocline –
thin layer of warm water overlying a much cooler sub‐
surface water mass
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Land Based (Steep Shore Line) 8
Floating OTEC – some similarities to a FPSO 9
Technical Specification Scope
This technical specification establishes general principles and
provides useful information to enable design assessment of land‐
based, shelf‐mounted, or floating OTEC plants that generate
electrical power. This electricity may be used for utility supply, or
production of other energy carriers. It is applicable to the OTEC
structure, process flows and machinery, and electrical equipment
and controls, to the point of interconnection to the primary load or
electrical grid. Intended users of this specification are OTEC
developers, engineers, regulators and financing authorities.
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Working Group Make Up
Martin Brown elected as Working Group Convenor in Dec. 2014 at a well attended scope review meeting in London
1. Pat Grandelli (Makai, US)
2. Laurie Meyer (La Mer Consulting, US)
3. John Griffiths (JWG Consulting, UK) 4. Yasuyuki (Yasu) Ikegami, (Institute of Ocean Energy, Saga University, Japan)
5. Paul Dinnissen & Remi Blokker (Bluerise, Netherlands)
6. Gouri Shankar Bhuyan, Vancouver, (GB Consultants, Canada)
7. Laura‐Mae Macadré, (Bureau Veritas, France)
8. Dr. Weimin Liu, First Institute of Oceanography, Qingdao (China)
9. Purnima Jalihad, (NIOT, India) 11
Technical Specification Development
Very international group so coping with time zone differences means early mornings and late nights for some participants during Skype conference calls • Group members have to squeeze in PT20 work between day job
•
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OTEC Developments Around Globe
100kW prototype
Okinawa, Japan
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DCNS, prototype
La Reunion
Bluerise, prototype
TU Delft
Key International OTEC Players
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OTEC Developments Around Globe
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New Plant about to go on line in Hawaii
August 2015 Official Opening 16
Substantial NER 300 Funding
Akuo and DCNS’ offshore NEMO project was awarded €72m Euro in a Second NER300 Call
NEMO is an OTEC project off the west coast of Martinique in the Caribbean Sea. A moored barge will be installed housing four turbo‐generators. Each will be driven by an Ammonia closed Rankine
cycle utilising the circa 20°C temperature difference between the cold seawater at 1.1 km depth and the warm surface waters. The cold water is pumped via a single large diameter riser. Each turbine will produce roughly 4 MW resulting in a total nominal installed capacity of 16 MW with a maximum available capacity of 10.7 MW. The net generated power is exported to the grid via a subsea cable and a substation at an existing conventional fossil fuel power plant.
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Conclusions
• New Technical specification will help to more projects on the go
• Significant investment in OTEC is happening around the world
• Oil and gas floating production experience has reduced the technical risk associated with OTEC
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Thank you – questions?
Martin G. Brown
General Manager Aberdeen +44 (0)7480 528624
martin.brown@
aqualisoffshore.com
Offices strategically located near the world’s major offshore energy centers
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Aqualis Offshore ‐ in brief
Key information

Established in 2012


Provider of specialist marine and engineering consultancy,
primarily to the offshore oil and gas sector and renewables
industry
Integrated marine and engineering staff consists of
carefully selected industry specialists with long track
record

Global footprint – [13] offices in [10] countries

Head office in London, operating as a global entity
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Approx. 200 employees
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April 2014 – aquisition of Tristein in Norway
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ISO 9001 : 2008 Accredited (LRQA)
Service offering
Engineering
Marine Warranty Services
Transportation and Installation Construction Supervision Services
Rig Moving
Marine Consultancy
Dynamic Positioning Services
Due Diligence Services
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Engineering