A thermal power plant uses steam to drive a steam turbine which is connected to an electrical generator. Water is heated by combustion in a boiler to produce high pressure steam, which spins the turbine before being condensed and recycled. Thermal power plants generate electricity by burning coal, which is pulverized and fed into a boiler to heat water and produce steam to drive the turbine generator. Key components include the boiler, turbine, condenser, and cooling towers.

1. Thermal power plant

2. • A Thermal power plant is a power plant
where steam is used to drive a steam
turbine. This turbine is connected to an
electrical generator. After this, the water is
condensed, and may be used again. This
is known as the . There are different
procedures that can be used to heat the
water; this gives different types of thermal
power plants:

3. • Components of a Thermal Power Plant[change | change source]
• 1. Cooling tower
2. Cooling water pump
• 3. transmission line (3-phase)
4. Step-up transformer (3-phase)
5. Electrical generator (3-phase)
6. Low pressure steam turbine
7. Condensate pump
8. Surface condenser
9. Intermediate pressure steam turbine
• 10. Steam Control valve
11. High pressure steam turbine
12. Deaerator
13. Feedwater heater
14. Boiler steam drum
15. Superheater
16. Forced draught (draft) fan
17. Reheater
18. Combustion air intake
19. Induced draught (draft) fan

4. • 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 :
• 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. :
• 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. :
• 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.
•
TRANSFORMERS : It is a device that transfers electric energy from one alternating-
current circuit to one or more other circuits, either increasing (stepping up) or
reducing (stepping down) the voltage:
TRANSFORMERS : It is a device that transfers electric energy from one alternating-
current circuit to one or more other circuits, either increasing (stepping up) or reducing

5. •
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:
• 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:
• 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
•

6. • 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. :
• 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.
•