The document discusses power generation at the Koderma Thermal Power Station. It describes the key components of a thermal power plant including the coal handling plant, pulverizing plant, boiler, superheater, economizer, air preheater, deaerator, turbine, condenser, cooling tower, alternator and transformer. The document provides diagrams and explanations of how each component functions in the power generation process at a thermal power station.

1. POWER GENERATION AT KODERMA
THERMAL POWER STATION
JAYOTI VIDYAPEETH WOMEN’S UNIVERSITY
PRESENTED BY
SHREYA SANKRITYAYAN
B.TECH(ECE)-MBA(FM)
Final year

2. CONTENT LIST
 Coal handling plant
 Pulverizing plant
 Boiler section
 Super heater
 Economizer
 Air preheater
 Deaerator
 Turbine
 Condensor
 Cooling tower
 Alternator
 Transformer
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3. KODERMA THERMAL POWER
STATION
A power station (also referred to as generating station, power plant
or power house) is an industrial facility for the generation of electric
power.
Thermal Power Plants constitute 75.43% of the total installed captive
and non-captive power generation in India.
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4. THERMAL POWER STATION
Fig 1 thermal power plant view[1]
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5. COAL HANDLING PLANT
Fig 2 block diagram of coal handling plant[1] 4

6. COAL HANDLING PLANT
Fig 3 sections of coal handling plant[1] 5

7. PULVERIZING PLANT
 In modern thermal power plant, coal is
pulverized.
 Pulverizing is a mean of exposing a large
surface area to the action of oxygen and
consequently helping in combustion.
Fig 4 pulverizing plant [1]
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8. BOILER
 Boiler is an enclosed vessel in which
water is heated until it get turned into
steam.
 Due to combustion of coal, products
are nothing but gases which helps in
heating the water.
Fig 5 diagram of boiler[1]
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9. SUPERHEATER
 Super heater is a component of a steam-generating unit in which steam,
after it has left the boiler drum, is heated above its saturation
temperature.
Fig 6 super heater coils[1]
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10. ECONOMIZER
 Flue gases coming out of the boiler carry lot of heat. Function of
economizer is to recover some of the heat from the heat carried away
in the flue gases up the chimney and utilize for heating the feed water
to the boiler.
Fig 7 Economizer[1] 9

11. AIR PREHEATER
 The remaining heat of flue gases is
utilized by air preheater. It is a device
used in steam boilers to transfer heat
from the flue gases to the combustion
air before the air enters the furnace.
Fig 8 Air preheater[1]
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12. DEAERATOR
Fig 9 Deaerator view[1] 11

13. CONDENSOR
Fig 10 Condensor[1]
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14. TURBINE
 Steam turbine is a rotating machine
which converts the heat energy of
steam into mechanical energy.
Fig 11 Turbine[1]
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15. TURBINE CONT…
Fig 12 Block diagram of turbine working[1]
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16. ELECTROSTATIC PRECIPITATOR
 Electrostatic precipitator is a collection of devices that removes particles
from a flowing gas using the force of an induced electrostatic charge.
 ESP contains high voltage electrodes, these attract the pulverized flue
aish from the flue gases. At regular interval the electrodes are rapped
with motor driven hammers and the PFA falls into the hopper.
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17. COOLING TOWER
 A condenser needs huge quantity
of water to condense the steam.
 Most plants use a closed cooling
system where warm water coming
from condenser is cooled and
reused.
Fig 14 cooling tower[1] 16

18. ALTERNATOR
 An alternator is an electromechanical device that converts mechanical
energy into current electrical energy.
 Normally known as small rotating device.
Fig 15 Alternator work[1]
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19. TRANSFORMER
 It is a device that transfers electric
energy from one alternating current
circuit to either one or more other
circuits, either increasing or reducing
the voltage
Fig 16 Transformer[1]
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20. COAL FIRED POWER PLANT
Fig 17 plant working principle [1] 19

21. CONCLUSION
 Reheating the steam after it has partially expanded, improves the
thermal cycle efficiency by 4 to 5%.
 Regenerative feed water heating by using low pressure and high
pressure heaters also improves the thermal cycle by 6 to 7%.
 The overall efficiency of a modern thermal plant is about 42%.
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22. REFERENCES
1. www.slideshare.net
2. www.accessengineeringlibrary.com
3. en.wikipedia.org
4. Lv tai , Guo zhenwei , Gao yang , ‘‘Power Plant Boiler
Waste Heat Recycling Design Research,’’
Power and Energy Engineering Conference, Shanghai
2012
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