The document discusses the Dholpur combined cycle power plant in India. It generates 330 MW of electricity using two gas turbines and one steam turbine. The plant uses natural gas as its main fuel supplied by ONGC and transported by GAIL. It was established in 2007 with an estimated cost of 1155 Crore and is operated by Rajasthan Rajya Vidyut Utpadan Nigam Limited. The combined cycle power plant improves efficiency by capturing waste heat from the gas turbines to power a steam turbine.

1. Session :2016-17
SubmittedTo: Submitted by
Ajay Khandelwal
Final year (ME)
DEPARTMENT OF MECHANICAL ENGINEERING
POORNIMACOLLEGEOF ENGINEERING
Jaipur
06-08-2016 PCE2/ME/13/003

2.  ESTABLISHMENTOFTHE COMPANY
 INTRODUCTION
 GASTURBINE
 TYPES OF GASTURBINE
 BRAYTON CYCLE
 COGENRATION SYSTEM
 HEAT RECOVERY STEAM GENERATOR
 HOW DOESA COMBINEDCYCLE POWER PLANTWORK
 DUAL CYCLE
 STEAMTURBINE
 RANKINECYCLE
 WHYTHISTECHNIQUE USED NOW A DAYS
 THANKYOU
 QUARIES
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3.  Set up- 2007
 Location- 55km.south west of Agra ,Pachganv road ,Dholpur
 Area- 143 Bigha
 Estimated Cost- 1155 Crore
 Project Owner- Rajasthan RajyaVidyut Utpadan Nigam Limited
 Planning Authority - Central Electricity Authority
 Engineering Design- Bharat Heavy Electricals Limited
 Fuel Supplier-ONGC
 FuelTransporter- GAIL
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4.  Dholpur combined cycle power plant generated 330 MW electricity
 The main equipments were supplisd by BHEL
 The power plant is operated by Rajasthan RajyaVidyut Utpadan Nigam
limited
 The main fuel used for the plant is Natural gas and Neptha gas
 The fuel is supplied by GAIL
 Less pollution of the power plant
 The DCCPP cosist of two gas turbine and one steam turbine
 Transmission of the network is very good
 Well connected by roads
 Availability of land and water
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5. Total plant capacity 330MW
Type OfTurbine Impulse Reaction
Type Of Boiler WaterTube Boiler
GasTurbine -1 110MW
GasTurbine-2 110MW
SteamTurbine 110MW
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6.  A Gas turbine ,also called combustion turbine , is a rotary engine that
extracts energy from a flow of hot gases produced by combustion of gas
in a stream of compressed air
 TheTemperature of the gas turbine is 1360 centrigrade
 The Shaft speed is 3000 rpm
 Gas turbine arranged on common shaft with compressor and a generator
Overall efficiency of gas turbine is 20%-40%
 The Gas turbine is working on the Brayton cycle
 The gas turbine uses Natural gas as a fuel
 The other fuels are also use for the gas turbine
Conventional Fuel- Natural gas
Non Conventional Fuel-Crude Oil
Synthetic Fuel- Chemical Process
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7. Classification
of gas turbine
Path of gases
Open cycle Closed cycle
Action of
gase
Impulse
reaction
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8. Working of gas turbine
 Air intake system
 Compressor
 Combustion chamber
 Turbine
 Generator

9.  The ideal cycle that
the working fluid
undergoes in the
closed loop is the
brayton cycle . It is
made up of four
internally reversible
process.
PROCESS
1-2 isentropic
compression
2-3 constant pressure
heat addition
3-4 isentropic
expansion
4-1 constant pressure
heat rejection
Brayton cycle

10.  The exhaust gases form the
turbine carry a large quantity of
heat with them since their
temperature is far above the
ambient temperature
 They can be used to heat the
water which is flowing in the
tubes
 By the cogeneration process the
efficiency of the cycle is
increased

12.  Heat of the gas turbine exhaust is used to generate steam by passing it
through a heat recovery steam generator.(HRSG) with a live steam
temperature between 420◦C and 580◦C
 Combining both gas and steam cycles,high input temperature and low
output temperature can be achived
 The efficiency of the cycle increased because they are powered by the
same fuel source
 The heat recovery steam generator is used bypass system to eliminated
the draws of different temperature
 The structure of the HRSG is very dense

13.  In steam turbine shaft is rotated steadily
 By impact reaction of steam the working substance is on the turbine
blade
 It converts potential energy or heat energy into mechanical energy
 It works on rankine cycle
 Steam turbine is started by burnt exaust gases which is coming from the
gas turbine
 The steam turbine is used these components to generate dry steam
Air preheater
Economiser
Boiler
Superheater

15.  High efficiency
 Low cooling water requirement
 Fast start
 Low environment pollution
 Low cost
 A starting motor is required to start a gas turbine
 Higher production rate
 Low emission of harmful gases

16.  A practical training for a period of60 days provided me with depth of
knowledge about combined cycle power plant and how to power
generation
 Power generation plant are very economical
 The efficiency of the combined cycle power plant is high rather than
other plant