In India 65% of total power is generated by the Thermal Power Stations . Main parts of the plant are 1. Coal conveyor 2. Pulverizer 3.Boiler 4. Coal ash 5. Air preheater 7. Electrostatic precipitator 8. Smoke stack 9. Turbine 10. Condenser 11. Transformers 12. Cooling towers 13. Generator 14. High votge power lines BASIC OPERATION : A thermal power plant basically works on Rankine cycle . COAL CONVEYOR : This is a belt type of arrangement.With this coal is transported from coal storage place in power plant to the place near by boiler. STOKER : The coal which is brought near by boiler has to put in boiler furnance for combustion. This stoker is a mechanical device for feeding coal to a furnace. PULVERIZER : The coal is put in the boiler after pulverization.For this pulverizer is used. A pulverizer is a device for grinding coal for combustion in a furnace in a power plant .An impact mill is used for this purpose. BOILER : pulverized coal is put in boiler furnance in which water is heated and circulated until the water is turned in to steam at the required pressure. Coal is burned inside the combustion chamber of boiler. These gases which are at high temperature vaporize the water inside the boiler to steam. SUPERHEATER : Superheater is a component of a steam-generating unit in which steam, after it has left the boiler drum, is heated above its saturation temperature. The amount of superheat added to the steam is influenced by the location, arrangement, and amount of superheater surface installed, as well as the rating of the boiler Superheaters are classified as convection , radiant or combination of these. REHEATER : .Reheater is also steam boiler component in which heat is added to this intermediate-pressure steam, which has given up some of its energy in expansion through the high-pressure turbine. The steam after reheating is used to rotate the second steam turbine where the heat is converted to mechanical energy. CONDENSER : Steam after rotating steam turbine comes to condenser. Condenser refers here to the shell and tube heat exchanger installed at the outlet of every steam turbine in Thermal power stations. These condensers are heat exchangers which convert steam from its gaseous to its liquid state. In so doing, the latent heat of steam is given out inside the condenser . COOLING TOWERS : The condensate water after condensation is initially at high temperature. This hot water is passed to cooling towers. It is a tower in which atmospheric air circulates in direct or indirect contact with warmer water and the water is thereby cooled. Water, acting as the heat-transfer fluid, gives up heat to atmospheric air, and thus cooled, is recirculated through the system. ECONOMISER : Flue gases coming out of the boiler carry lot of heat. Function of economiser 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. It is placed in the passage

1. NAME:-Udit Narayan Das
ROLL NO.:- 11901611109

2.  A thermal power station is a power plant in
which the prime mover is steam driven.
 It works on the RANKINE CYCLE.
 Damodar Valley Corporation (DVC) was
established in 1948 under an Act of Parliament
for unified development of Damodar Valley
covering an area of 24,235 sq km in Bihar and
West Bengal.
 DURGAPUR STEEL THERMAL POWER STATION is a
Thermal Power Project of Damodar Valley
Corporation (DVC) whose construction,
commissioning activity is undertaken by Bharat
Heavy Electricals Limited (BHEL).

3.  Coal conveyor
 Stoker
 Pulveriser
 Boiler
 Coal ash
 Air pre-heater
 Electrostatic precipitator
 Smoke stack
 Turbine
 Condenser
 Transformers
 Cooling towers
 Generator
 Power House
 High voltage power lines

5.  Coal handling plant
 Main generating plant
 Ash handling plant
 Switchyard

6.  CHP handles the coal from its receipt to
transferring it to bunkers.
Wagon tipplers are used to unload the coal
into underground conveyer belts from where
they are transported to penthouse where
suspended magnets are used to detect
metals.
 Crushers are used to crush the coal into small
pieces which are then transported to coal
storage via coal conveyer.
 When the coal is to be used Pulverizer is
used to grind the coal into dust.

7.  Here, the burning of coal starts.
 it contains various equipments which help in
generation of electric energy.

8.  Pulverized coal is put
in boiler furnance
 Boiler is an enclosed
vessel in which water
is heated and
circulated until the
water is turned in to
steam at the required
pressure.

9.  Super-heater: Superheater is a component of a
steam-generating unit in which steam, after it has
left the boiler drum, is heated above its saturation
temperature.
 Reheater : Reheater is also steam boiler component
in which heat is added to this intermediate-pressure
steam, which has given up some of its energy in
expansion through the high-pressure turbine.
 Condenser : Condensers are heat exchangers which
convert steam from its gaseous to its liquid state,
also known as phase transition.
 Cooling Towers: It is a tower- or building-like device
in which atmospheric air (the heat receiver)
circulates in direct or indirect contact with warmer
water (the heat source) and the water is thereby
cooled

10. Function of
economiser 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.

11.  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.
 Smoke stack : A chimney
is a system for venting hot
flue gases or smoke from a
boiler, stove, furnace or
fireplace to the outside
atmosphere.

12.  Extracts thermal energy from pressurized steam
and uses it to do mechanical work on a rotating
output shaft.
 uses multiple stages in the expansion of the
steam.

13.  Converts mechanical
energy into electrical
energy.
 Turbine is coupled with the
Turbo generator that
normally spins at 3000 rpm
in countries with 50 Hz
supply frequency
 The generated voltage is
stepped up in Generator
Transformer and the power
is evacuated through
transmission line feeders.

14. The main operations are:
 Removal of ash from furnace.
 Transfer of ash to a fill or storage.
 Disposal.
Ash can be disposed of as:
 Dry ash system
 Ash slurry system

15.  It is a device which removes dust or other finely
divided particles from flue gases by charging the
particles inductively with an electric field, then
attracting them to highly charged collector
plates.

16.  Hub of electrical power
sources.
 Exists in a generating
station to coordinate the
transfer of power
between generators and
transmission lines.
 It contains current
carrying conductors,
transformers, circuit
breakers etc.

17.  As the population is increasing, the
consumption of power is also increasing.
 In order to meet the needs of future
generation, power should be used efficiently.