1Challenge the future

Ocean Energy – Tidal Energy

Antonio Jarquin-Laguna 28-04-2015

Challenge the future

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• Tidal Range (tidal rise and fall)derived from the gravitational forces of the Earth-Moon-Sun system;

• Tidal Currentswater flow resulting from the filling and emptying of coastal regions as a result of the tidal rise and fall

Context

Oosterschelde, Den Oever,

Marsdiep,……

Grevelingen, ……

Afsluitdijk, ……

Water power plants or Hydro power stations (Dutch: Waterkracht centrales)

1High-head

2Reservoir

3Run-of-river

4Osmosis-pressure

5Osmosis-elec.curr.

6Tidal-barrage

7Tidal-stream

8Waves

9PSP’s

10OTEC

stream // river estuary // sea // ocean

km

Q

Types of Plant =

H

Ad

van

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oorn

Ver

sie

20-3

-201

5

Q

H

New developments

Maas, Lek, Vecht, …

Plan Lievense, OPEC, ALPCAES,

…..…

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150 TWh/year or 90 GW of generating capacity 20 billion EUR electricity sales

Global potential of tidal currents

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Current status

• ~7MW installed capacity globally

• 20- 130 MW tidal energy potential in the NL

• Need for pre-commercial projects and first farm arrays

Tidal companies in the world2014 JRC Ocean Energy Status Report

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Current technologies

Horizontal Axis turbine

Horizontal Axis turbine

Ducted turbine

Oscillating hydrofoil

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Some full-scale demonstration projects

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Some full-scale demonstration projects

Operational projects in the UKOcean Energy Systems- Annual Report

2014

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• Wave and current resource• Impact of turbulence?• Wave-current interaction?

• Devices and technology• Water-to-wire numerical models• Performance validation• Moorings and foundations

• Deployment and operations• How to increase the reliability?• New offshore materials• Farm array aspects

• Environmental impact

Main R&D challenges

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• The World’s first Tidal Array Scheme7 MW tidal array project in the Pentland Firth in Scotland.

• The Swansea Bay Lagoon 320 MW tidal lagoon project in Swansea Bay, UK

• Dutch Tidal Test Center in den Oever High tidal flow site fro intermediate scale testing

Some future prospects

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Dutch companies and other key players

Tidal / current

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Role of the TUDelft

• High expertise from researchers with a connection to Ocean Energy

• Opportunity for new research projects and new ideas

• Education

TechnologyAE,CiTG,EWI,3ME

ResourceCiTG

Deployment and operation

CiTG, TPM

EnvironmentalCiTG

Policy and economics

TPM

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Look forward to initiating Ocean Energy research with you !

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APPENDIX

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Wave energy

Tidal currents

Thermal energy

Salinity gradient

Ocean currents

MaterialOffshore

Ocean Energy disciplines

Process &Energy

Electrical systems

Environmental & societal

many cross-over between TUD faculties

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* Source: IPCC-SRREN, 2012

Thermal energy

% of global electricity consumption* Capacity factor

200% 80 - 100%

Ocean Energy

Wave energy

Tidal current

Salinity gradient

Ocean currents

14%

15 - 30%

15 - 30%

6%

25 - 40%

26 - 40%

80 - 100%

80 - 100%

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* Source: Ecofys, 2014

Wave energy

Tidal currents

Thermal energy

Salinity gradient

Ocean currents

Concept R&D

Ocean Energy

Pilot Demonstration Comm.

Position Dutch sector leaders

Position International sector leaders

Status of development

Hydropower in the Netherlands

• What are promising types of plants?• Generating energy by means of hydropower.• Large scale storage of energy

Ad van der Toorn28 April 2015

Pump Storage Plants (PSP) in the Netherlands

Ad van der Toorn, 12-1-2015

P

G

P P

G

PP

Pressure Cavernsin salt domes

Bath tub or “Valmeer”(rev. Lievense & KEMA)

Gravity PowerShaft or Tower

Relative small heads

& big volumes

so lots of turbines

Relative high heads

&small volumes

so less turbines

Underground PSPin old coal mines

P

P