2. INTRODUCTION
• In January 1882 the world’s first public coal-fired power station started.
• It was names as Edison Electric Light Station, was built in London.
• A project of Thomas Edison organized by Edward Johnson.
• In thermal generating stations coal, oil, natural gas etc. There employed as
primary sources of energy.
3. DEFINITION & CONSTRUCTION
• A Thermal Power Plant converts the heat energy of coal into electrical enthey.
• It is constructed in approx 400 Acre.
• Located in Sea side above the Bay of Bengal
• There are 5units. 210Mw for each Unit Total 1050Mw
Unit 1: July 9, 1979 Unit 2: December 17,
1980
Unit 3: April 16, 1982 Unit 4: February 11,
1992
Unit 5: March 31, 1991
4. WORKING PRINCIPLE
• First the water is taken into the boiler from a water source. The boiler is heated
with the help of coal.
• The increase in temperature helps in the transformation of water into steam. The
steam generated in the boiler is sent through a steam turbine.
• A generator is connected to the steam turbine.
• The turbine has blades that rotate with high velocity. When steam flows across
them. This rotation of turbine blades is used to generate electricity.
5. MAIN EQUIPMENT
• Coal Plant • Turbine
• Mills • Economizer
• CST Tank • Air preheater
• Feed Water Tank • Generator
• Boiler • Chimney
6. COAL PLANT
• For TTPS coal is Supplied by Coal India Pvt Ltd.
• Coal is Comes to TTPS through the Train and Ship’s.
• Then it Carry on by Conveyors to Mills.
7. MILLS
• In mills there are 6 mills.
• 5 mills are in service and one is Stand by
• In a mill consist of 3 Rollers.
• Coal is Get into bowl and roller rotates
and it become Powder form.
8. CST TANK
• Good water is taken from thamirabarani river.
• Water get Demineralized in TTPS.
• Remove all minerals and salts from the water
• DM water is Stored in CST Tank.
9. FEED WATER TANK
• From the CST Tank, DM water is feed to Feed Water Tank.
• Now the DM water consist of some gases.
• Gages such as oxygen and carbon dioxide.
• It removes all these gases in DM water.
• Then it supplied to the boiler.
10. BOILER
• The function of boiler is to generate steam.
• At desired pressure and temperature by transferring heat.
• It is produced by burning of fuel in a furnace to change water into steam.
• Boiler is maintained at 540°C
11. TURBINE
• In thermal power plants generally 3 turbines are used to increases the efficiency.
1.High pressure turbine
2.Intermediate pressure turbine
3.Low pressure turbine
12. ECONOMIZER
• Economizers are heat exchangers that transfer the heat in the flue gas to another
medium.
• Flue gases coming out of the boiler carry lot of heat. An economizer extracts a
part of this heat from flue gases and uses it for heating feed water.
• Saving coal consumption and higher boiler efficiency.
13. AIR PREHEATER
• It is placed between the economizer and the chimney.
• A device, which increases the tempurature of air before it supply to the furnance
using heat from flue gases passing through chimney.
14. GENERATOR
• In a turbine generator, a moving by steam
• A series of blades mounted on a rotor shaft.
• It converts the mechanical (kinetic) energy of the rotor to electrical energy.
16. ELECTROSTATIC PRECIPITATOR
• Electrostatic precipitators collect dust in the flue gas produced by boiler.
• It removes Ash from a gas stream by using electrical energy to charge particles
either positively or negatively.
• The charged particles are then attracted to collector plates carrying the opposite
charge.
• Then collected ash are stored in ash handling plant.
18. CHIMNEY
• The function of chimney to carry out smoke from the boiler.
• The height of the chimney is 120mts.
• To discharge the flue gases high in the atmosphere to maintain the cleanliness of
the surrounding atmospheric air.
19. ADVANTAGES
• The initial investment cost is also less as compared to the other types of power
plants.
• The installation and construction of the thermal power plant causes no major
environmental damage.
• Some kind of Fishes Growth are so well in Thermal Power Station surrounding .
Used to export to many Countries
20. DISADVANTAGES
• It pollutes the atmosphere due to producing large amount of smoke.
• Higher maintenance cost and operational cost.
• Huge requirement of water.
