The Guru Nanak Dev Thermal Plant (G.N.D.T.P) is a 440 MW coal-based thermal power plant located outside Bathinda, Punjab. It uses a Rankine cycle to generate power. Coal is pulverized and fed into boilers to produce high pressure steam. The steam powers turbines connected to generators to produce electricity. It has circuits for steam, water, and coal flow. Key components include boilers, turbines, condensers, heaters, and a cooling tower. The plant aims to increase efficiency through techniques like reheating and regenerative feed heating.

1. Submitted by:
Hardeep Singh

2. INTRODUCTIONINTRODUCTION
 In India 65% of total power is generated by the Thermal
Power Stations
 G.N.D.T.P foundation stone are laid on
19, November,1969
 Guru Nanak Dev Thermal Plant (G.N.D.T.P) is a project
of Punjab State Power Corporation Limited (PSPCL). It
is situated at outside of city Bathinda, Punjab. Its total
capacity is 440 MW as at present with two units
working with capacity 220MW & two unit are repairing or
designed under BHEL.
 Having four unit of 4 x 110 MW = 440 MW

3.  It is a coal-based plantIt is a coal-based plant
 combustion of coalcombustion of coal
 Heat convert water in pipes into steam Heat convert water in pipes into steam
 Steam run the turbine Steam run the turbine
 Rotates generator three phase electricRotates generator three phase electric
supply is producedsupply is produced
INTRODUCTIONINTRODUCTION

4. Basic requirements of plantBasic requirements of plant
 WaterWater
 Fuel (coal)Fuel (coal)
 BoilerBoiler
 Steam turbineSteam turbine
 GeneratorGenerator
 Unit auxiliariesUnit auxiliaries

5. RANKINE CYCLERANKINE CYCLE
 Thermal power plantThermal power plant
using steam as workingusing steam as working
fluid basically works uponfluid basically works upon
the principle of Rankinethe principle of Rankine
cycle.cycle.
Steam is generated fromSteam is generated from
water in boilerwater in boiler
Expanded in prime moverExpanded in prime mover
or turbineor turbine
Condensed in condenserCondensed in condenser
and again fed into theand again fed into the
boiler.boiler.

7. The general layout mainly consistsThe general layout mainly consists
of three circuits:-of three circuits:-
 steam flow circuitsteam flow circuit
 Water flow circuitWater flow circuit
 Coal flow circuitCoal flow circuit

8. Steam flow circuitSteam flow circuit
S.HEATER
R.H.
I.P L.PH.P
condenser

9. Water flow circuitWater flow circuit
ECONOMIZER
B
O
I
L
E
R
C
O
N
D
E
N
S
E
R
HOT
WATER
COOL WATER
B.F.P
STEAM
COOLING
D.M.
PLANT

10. CHP (Coal Handling PlantCHP (Coal Handling Plant ))
 Coal is unloaded from wagonsCoal is unloaded from wagons
using wagon tipplerusing wagon tippler
 When coal reaches the plant,When coal reaches the plant,
normal sizenormal size
of coal is about 500mmof coal is about 500mm
 primary crusher 120mmprimary crusher 120mm

 secondary crusher25mmsecondary crusher25mm
 coal mill pulverized coalcoal mill pulverized coal
 feeded in boiler.feeded in boiler.
WAGON TIPPLER
Coal Flow Circuit

11. STEAM TURBINESSTEAM TURBINES

12. Turbine used at G.N.D.T.P:Turbine used at G.N.D.T.P:
S.noS.no Types of turbineTypes of turbine Turbine at G.N.D.P.TTurbine at G.N.D.P.T
1.1. Horizontal/VerticalHorizontal/Vertical HorizontalHorizontal
2.2. Single/Multi CylinderSingle/Multi Cylinder Multi CylinderMulti Cylinder
3.3. Condensing/nonCondensing/non
CondensingCondensing
CondensingCondensing
4.4. Reheat/non-ReheatReheat/non-Reheat ReheatReheat
5.5. Regenerative/ nonRegenerative/ non
regenerativeregenerative
RegenerativeRegenerative

13. ManufacturersManufacturers B.H.E.LB.H.E.L
Rated speedRated speed 3000 r.p.m3000 r.p.m
Number ofNumber of
cylindercylinder
ThreeThree
Rated pressureRated pressure 130 kg/cm²130 kg/cm²
RatedRated
temperaturetemperature
535535°°CC
CondenserCondenser
vacuumvacuum
0.9 kg/cm²0.9 kg/cm²
Main Technical Data:

14. Turbine AccessoriesTurbine Accessories
 Surface condenserSurface condenser
 Steam jet air ejectorSteam jet air ejector
 Low pressure heaterLow pressure heater
 High pressure heaterHigh pressure heater
 Chimney steam condenserChimney steam condenser
 Gland steam condenserGland steam condenser
 DeaeratorDeaerator
 Condensate extraction pumpCondensate extraction pump

15. CondenserCondenser
1.1. surface type condensersurface type condenser
is usedis used
2.2. The coolant forThe coolant for
condensing the steam iscondensing the steam is
circulating water, which iscirculating water, which is
inside the condenserinside the condenser
brass tubes, and steam isbrass tubes, and steam is
outside.outside.

16. Surface condensersSurface condensers
No. of condenserNo. of condenser TwoTwo
Cooling areaCooling area 3330 m23330 m2
No. of brass tubesNo. of brass tubes 60006000
Circulating water required for eachCirculating water required for each
condensercondenser
15000T/Hr.15000T/Hr.
Allowable difference between inlet &Allowable difference between inlet &
outlet C.W. wateroutlet C.W. water
10°C Temp10°C Temp
Vacuum in the condenserVacuum in the condenser 0.90 Kg/cm20.90 Kg/cm2
Technical data of condenser

17. Cooling TowerCooling Tower
NumbersNumbers fourfour
WaterWater
cooledcooled
18000T/hr.18000T/hr.
CoolingCooling
rangerange
1010°°CC
HeightHeight 120 to 122120 to 122
metersmeters
These are massive Ferro-concrete structure
having hyperbolic profile creating natural
draught of air responsible for achieving the
cooling effect.

18.  LP and HP Heaters:LP and HP Heaters:
 The both are surface type i.e., condensateThe both are surface type i.e., condensate
or feed water inside heater tubes in theor feed water inside heater tubes in the
heater shell.heater shell.
 There are five LP heaters and two HPThere are five LP heaters and two HP
heatersheaters

19. CHIMNEY STEAM AND
GLAND STEAM CODENSER:
 There are additional two heating stagesThere are additional two heating stages
provided in the regeneration system of theprovided in the regeneration system of the
turbine for heating the condense flowingturbine for heating the condense flowing
through it steam leaks off from the turbinethrough it steam leaks off from the turbine
glands is used for heating the condensateglands is used for heating the condensate
in these heaters.in these heaters.

20. DEAERATORDEAERATOR
The function of the deaerator
is to remove dissolved non-
condensable gases and to
heat boiler feed water.

21. METHOD OF INCRESING EFFICIENCY:
1. REHEATING:
2.REGENRATIVE FEED HEATING:

22. STEAM CIRCUIT AT G.N.D.P.TSTEAM CIRCUIT AT G.N.D.P.T