TIDAL POWERTIDAL POWER Generation of Electricity UsingGeneration of Electricity Using Tidal Energy Tidal Energy
Presented by Presented by :: * *NishaNt KumarNishaNt Kumar Reg. No. 0701209350Reg. No. 0701209350 Electrical & Electronics EngineeringElectrical & Electronics Engineering Silicon institute of technology , Silicon institute of technology , BhubaneswarBhubaneswar
OUTLINEOUTLINE IntroductionIntroduction Tidal barrageTidal barrage Electricity GenerationElectricity Generation PumpingPumping Advantages and Advantages and
DisadvantagesDisadvantages ConclusionConclusion
IntroductionIntroductionToTo
Tidal EnergyTidal Energy
Why do the tides come and Why do the tides come and gogo ? ?
It is all to do with the gravitational force of the Moon It is all to do with the gravitational force of the Moon and Sun, and also the rotation of the Earthand Sun, and also the rotation of the Earth
The gravitational force of the moon causes the The gravitational force of the moon causes the oceans to bulge along an axis pointing directly at the oceans to bulge along an axis pointing directly at the moon. The magnitude of this attraction depends on moon. The magnitude of this attraction depends on the mass of the object and its distance away the mass of the object and its distance away
Spring TidesSpring Tides
When the sun and moon are in a line their When the sun and moon are in a line their gravitational attraction on the earth combine and gravitational attraction on the earth combine and cause a “spring” tidescause a “spring” tides
Neap TidesNeap Tides
When they are as positioned in 90° from each When they are as positioned in 90° from each other, their gravitational attraction each pulls water other, their gravitational attraction each pulls water in different directions, causing a “neap” tidesin different directions, causing a “neap” tides
TIDAL BARRAGETIDAL BARRAGE
Barrage is built across an estuary or bay Barrage is built across an estuary or bay that experiences an adequate tidal rangethat experiences an adequate tidal range
The barrage blocks the incoming and The barrage blocks the incoming and out-going tides of a coastal basinout-going tides of a coastal basin
The water trapped within the basin creats The water trapped within the basin creats a hydrostatic heada hydrostatic head
Electricity GenerationElectricity Generation
Generating SystemGenerating System A dam (barrage) is A dam (barrage) is
built across the built across the mouth of an mouth of an estuary.estuary.
Sluice gates allow Sluice gates allow incoming tides to incoming tides to fill the basin.fill the basin.
As the tide ebbs, As the tide ebbs, the water is forced the water is forced through a turbine through a turbine system to system to generate generate electricity.electricity.
Different Types of GeneratingDifferent Types of Generating System System
Bulb Turbine SystemBulb Turbine System
Rim Turbine SystemRim Turbine System
Oscillating water column SystemOscillating water column System
Bulb Turbine SystemBulb Turbine System
A bulb turbine is one in which water flows A bulb turbine is one in which water flows around the turbinearound the turbine
Rim Turbine SystemRim Turbine System
The generator is mounted at right angles to The generator is mounted at right angles to the turbine blades, making access easierthe turbine blades, making access easier
Oscillating water column Oscillating water column SystemSystem Incoming waves force Incoming waves force
air up column to turn air up column to turn the turbinethe turbine
Outgoing waves suck Outgoing waves suck air down column to turn air down column to turn the turbinethe turbine
PumpingPumping
The turbines in the barrage can be used The turbines in the barrage can be used to pump extra water into the basin at to pump extra water into the basin at periods of low demand, generally at night periods of low demand, generally at night when demand is low, extra water is when demand is low, extra water is pumped in and then power is generated pumped in and then power is generated at times of high demand at times of high demand
Tidal Power in IndiaTidal Power in India
Gulf of CambayGulf of Cambay
((7000 MW7000 MW )) Gulf of KutchGulf of Kutch
((1200 MW1200 MW ))
The techno-economic feasibility report is The techno-economic feasibility report is now being examinednow being examined
ADVANTAGESADVANTAGES * * Once you've built it, tidal power is free Once you've built it, tidal power is free
It produces no green-house gases or other It produces no green-house gases or other waste waste
It needs no fuel It needs no fuel
Not expensive to maintain Not expensive to maintain
Permits the simultaneous use of the dam for Permits the simultaneous use of the dam for a road or rail roada road or rail road
Provides a non-polluting and inexhaustible Provides a non-polluting and inexhaustible supply of energysupply of energy
DISADAVANTAGESDISADAVANTAGESBuilding of barrage is expensiveBuilding of barrage is expensive
Needs a wide area Needs a wide area
Few suitable sites availableFew suitable sites available
La Rance tidal power station ( 240 MW )La Rance tidal power station ( 240 MW )
CONCLUSIONCONCLUSION
Tidal power is a proven technology and Tidal power is a proven technology and has the potential to generate significant has the potential to generate significant amounts of electricity at certain sites amounts of electricity at certain sites around the worldaround the world
Although, our entire electricity needs Although, our entire electricity needs could never be met by tidal power alone, could never be met by tidal power alone, it can be invaluable source of renewable it can be invaluable source of renewable energyenergy
References:References:
www.google.comwww.google.com (papers on Tidal power (papers on Tidal power generation ).generation ).
IEEE papers on Tidal power in India.IEEE papers on Tidal power in India.
Thank YouThank You
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