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TIDAL GENERATORS HOW DO THEY WORK
PRESENTED BY:-SHUBHAM DIXIT
A3MA-02
CONTENTS:-INTRODUCTIONTIDES & TIDAL POWERTIDAL GENERATORSCLASSIFICATION(1) TIDAL STREAM GENERATORS(2) TIDAL BARRAGES(3) DYNAMIC TIDAL GENERATORSCOMPARISIONFUTURE OF TIDAL GENERATORSCONCLUSION
INTRODUCTION:-WHY TIDAL GENERATORS CAME INTO EXISTANCE?
RENEWABLE ENERGY SOURCEIMPROVED ENERGY SECURITYMOST EFFICIENT ENERGY RESOURCENO GREENHOUSE GAS EMMISION
TIDES & TIDAL POWER:-Rise and fall in sea levels Caused by the combined effect of
moon and sun.Tides are quite predictable.
TIDAL GENERATORS:-WORKING PRINCIPLE:- Consists of a turbine & an electrical
generator(alternator).
Turbines/windmill like blades are installed on the ocean floor.
Turbine and generator are connected directly or by a gearbox.
Due to kinetic or potential energy of sea water the turbine rotates.
Generator rotates and produces electricity
At shore, electricity can be distributed.
CLASSIFICATIONTidal Generator
Tidal stream generators
Tidal barrages
Dynamic tidal generators
TIDAL STREAM GENERATORS:-It make use of kinetic energy
of moving water.The power taken by turbine is
given by P=(rCpAV3 )/2
It’s design is similar to wind turbines but it’s performance is better.
TIDAL V/S WIND TURBINES:-Requirement
of land.
Density difference
predictability
TIDAL BARRAGES:-It make use of potential
energy of sea water.Difference in water level b/w
barrage & sea is used.It consist of turbine, sluice gate,
a basin to store water etc.During high tides the basin is
filled through sluice gate.
DYNAMIC TIDAL POWER:-DTP is an untried but
promising technology. an interaction between potential
and kinetic energies in tidal flows.
Very long dams( 30–50 km length) from coast to coast are needed.
By this Tidal phase differences are introduced across the dam.
COMPARISION :-Advantages:- Inexhaustible energy resourceMost efficient energy sourcePredictabilityNo green house gas emissionProtect from dangerous tides
Disadvantages:-EcologicalCorrosionHigh investment at startCan not produce electricity continuously
FUTURE OF TIDAL GENERATERS:-Sihwa Lake Tidal Power Station(254MW) in
South Korea.Rance Tidal Power Station(240MW) in
France.
812 MW tidal barrage near Ganghwa Island (South Korea) Completion is planned for 2015.
A 1,320 MW barrage is proposed by the South Korean government, with projected construction start in 2017.
CONCLUSION:-Tidal energy is a promising renewable energy
source available to the world . since the past one decade, numerous R&D efforts have been carried out hoping that tidal energy can become a realistic renewable energy source one day.
REFERENCES:-http://en.wikipedia.org/wiki/Tidal_powerhttp://en.wikipedia.org/wiki/TideMarine tidal current electric power
generation: State of art ¤t status
-Yun Seng Lim & Siong Lee Koh
University of Tunku Abdul Rahman ,Malaysia
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