Tidal power

The Tidal PowerAlexander Mitrofanov

ICT Praha 2012

Index• Introduction• Tides• Tidal power and wave power• How it works• The difference between the Two• Types of tidal plants• Pros and Cons of Tidal Power• Currents sites of tidal power plants• Kislaya Guba Tidal Power Station• References

IntroductionTidal power, also called tidal energy, is a form

of hydropower that converts the energy of tides into useful forms of power - mainly electricity. This is the

only form of energy whose source is the moon.

Tides

Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.

The high tide

The low tide

Tides

High and low tides in use

Tidal power and wave power

Wave Power

Wave power devices take energy directly from surface waves or from pressure

fluctuations below the surface. Wave power is of course powered by waves. As a wave goes by, the buoy rotates and transforms mechanical energy into electrical energy.

Wave Power

Wave Power

Wave Power

Wave Power

Pros and Cons of Wave Power

Wave PowerPros Cons

• Consistent Power Pollution-Free

• Low Operating Costs• Renewable• Minimal Visual Impact

• Device Breakdown• High Initial Costs • Noise

Tidal Power

Tidal power is actuated by a turbine under water that spins making the mechanical

energy to electrical throw a generator that send the electrical energy to the shore.

Types of tidal plantsTidal Barrage Tidal current turbines

Are Typically dams, built across on estuary of bay

Make use of the kinetic energy of moving water to power turbines in a simular way to wind turbines that use wind to power turbines

Types of tidal plantsTidal Barrage Tidal current turbines

Tidal Barrage

The Rance tidal barrage in North-West France is the

largest in the world

Tidal current turbines

Tidal current turbines

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

Pros and Cons of Tidal Power

Tidal BarragesPros Cons

• Mature technology that has been around for nearly 50 years

• Reliable energy source.

• High costs of construction

• Environmental impacts on marine life

• Low power output in comparison to other energy source like coal and nuclear power plants .

Tidal Current TurbinesPros Cons

• Able to utilize both ebb and flood tides

• Tidal current turbines are not large massive dam structure.

• Tidal current turbine technology is young in its development

• Installation and maintenance challenges

• Environmental impacts are still being tested

Current sites of tidal power plants

Station Capacity (MW)

Country

Sihwa Lake Tidal Power Station

254 South Korea

Rance Tidal Power Station 240 FranceAnnapolis Royal Generating Station

20 Canada

Jiangxia Tidal Power Station

3.2 China

Kislaya Guba Tidal Power Station

1.7 Russia

Uldolmok Tidal Power Station

1.5 South Korea

Strangford Lough SeaGen 1.2 United Kingdom

Kislaya Guba Tidal Power Station

• In Russian name means Sour Lip• The station is the world's 4th largest tidal power

plant• The output capacity of 1.7 MW• Construction on the project began in 1968• Consists in the state register as a heritage of

science and technology.• Situated under the Polar Circle

References

• Wikipedia.org• Slideshare.com• Alternative-energy-news.info• Google.maps.com• Google.com

Thank you for your attention.Alexander Mitrofanov

ICT Praha [email protected]