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OCEAN RENEWABLE ENERGY

STATUS & PERSPECTIVES IN BRAZIL

Segen Estefen

COPPE/UFRJ Ocean Engineering Department

Brazil NEET Workshop

Braslia, 19-20 November 2007

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Contents

Wave Energy

Pilot Wave Energy Plant

Wave Climate

Wave Converter

Brazilian Program for Ocean Renewable Energy

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Wave, Tide and Current

Sea water density is 835 times the air density (energy concentration).

Oceans cover 70% of the planet surface (disponibility of area for installation).

80% of the population live on a strip of 80 km close to the coast (consumption market)

Type Source Development

Phase

World

Potential

Tides Earth-Moon-Sun Mature (commercial) 3 TW

Waves Winds Prototypes 10 TW

Currents Winds, Tides, Temperature

gradient, Salinity.

Prototypes 5 TW

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Earth global potential 1012

-1013

Joules (1-10 TW) ~ world electricity demand

Wave energy power per crest width : P = 0.5 Hs2 Te kW/m

Wave Energy

5x2-6x

Solar Energy WindEnergy

WaveEnergy

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Coastal

Offshore

Wave Energy Converters

LIMPET, Scotland (500 kW) OWC, Portugal (400 kW)

AWS, Netherlands (2 MW)PELAMIS, UK (750kW)

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Brazilian Energy Resources

27 GW

14 GW

30 GW

35 GW

8 GW

Tides in the North Region: 5 to 11 m

Waves: Hs = 1,2 to 3 m T = 5 to 12 s

Region Energy Potential (GW)

North (Tides) 27

Northest 22

Southest 30

South 35

Brazilian

Potential114

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Regulation Framework

Fonte: Ibama

No legislation for electricitygeneration from waveenergy;

Procedures alreadyestablished for oil&gasoffshore as well as marketrules for conventionalelectricity generationshould be considered.

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Wave Energy Plant Pecm Port

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Wave Climate - Datawell Directional Waverider

0

5

10

15

20

25

30

35

40

45

75 100 125 150 175 200 225 250

Wave Height (cm)

Frequency

(%)

0

5

10

15

20

25

30

4 5 6 7 8 9 10 11 12 13 14 15 16 17 19 20

Wave Period (s)

Frequency(%

)

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Wave Climate - Datawell Directional Waverider

0

2

4

6

8

10

12

Jan Feb

Mar

AprMa

y Jun Jul

Aug Sep Oc

tNo

vDe

c

Months

Power(kW/m)

Months

Annual

0

5

10

15

20

25

0 20 40 60 80 100 120 140

Wave Direction (degree)

Wave

Period(s)

0

50

100

150

200

250

300

0 20 40 60 80 100 120 140

Wave Direction (degree)

WaveHeight(cm)

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COPPE Concept for the Wave Converter

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Laboratorial Tests Scale 1:6.5

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Power vs. Pressure for two different Pumps

300 400 500 600 700 800

Pressure (meter water column)

200

250

300

350

400

450

500

Power(kW)

Pump 1000 psi

Pump 600 psi

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Conclusions

Research work conducted at COPPE Federal University ofRio de Janeiro is focused on a hiperbaric wave energy device tobe installed on Brazilian Northest coast in cooperation with

ELETROBRAS and Cear State Government.

Scaled wave data from local monitoring has been employed inexperimental tests using 1:6.5 models.

Prescribed pressure has significant influence on the devicepower output.

Efficiency parameter represented by the ratio between wavepower and device power output was in average 35%.

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Wave Energy Plant at Pecem Port

FILM 3 min (click below)

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PNERM

BRAZILIAN PROGRAM FOROCEAN RENEWABLE ENERGY

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PNERM Brazilian Program for Ocean Renewable Energy

Data aquisition of the ocean energy potencial (wave, tide and current) and

development of converters to produce electricity.

Join initiative from University Labs, Research Centers, Energy Companies and

Governmental Agencies for R, D & I network.

Aims:

1. Data on energy resources from near shore, offshore and islands.

Program 1 - Ocean Energy Resources

2. Research, development and prototype installation of electricity converters.

Program 2 - Electricity Converters

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Program 1 - Ocean Energy Resources

LeOnda GIS Wave Data

CE, RJ, SC, RS

LeCoMar GIS Current and Tide Data

Delta of the Amazonas River

Delta of the Bacanga River

So Marcos Bay

MA

SoLuiz

Esturio do Bacanga

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Pecm Port - CE , ELETROBRAS-COPPE-Cear State Gov.

UFC-CEPEL

Imbituba - SC, ELETROSUL-COPPE- UFSC-UNISUL

Program 2 Electricity Converter

ConvOn - Onshore Wave Converter: Installation and Monitoring

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RN, PE - CHESF - CELPE

Program 2 Electricity Converter

Desalination & Electricity

CHESF, CELPE, Fernando de Noronha

PureWater

SaltSolution

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Program 2 Electricity Converter

ConvOff Development & Prototype Installation

COPPE - Seahorse Wave Energy S/A

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Program 2 Electricity ConverterBacanga Tide Energy Lab

COPPE - UFMA - ELETRONORTE

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Program 2 Electricity ConverterConvCor P&D Current Converter

COPPE - ELETRONORTE - Amapa State Gov.

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R, D & I Brazilian Network

LeOnda

LeCoMar

ConvOn

ConvOff

Bacanga

ConvCor

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Perspectives

Identification and evaluation of technical, legal and environmental aspects related to

ocean energy sources to be used for electricity generation.

Cooperation with electrical and offshore industries for the development of construction

and installation strategies as well as transmission links and connections to the national

grid.

Studies on economic evaluation of the ocean energy, considering social and

environmental impacts.

Research, development and innovation of electricity converters for the Brazilian coast

and EEZ