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7/18/2019 Gas Turbine Combustion and Power Generation
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Gas TurbineCombustionand Power
Generation
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Outline
7/18/2019 Gas Turbine Combustion and Power Generation
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TURBINES: Machines to etract!uid "ower #rom !owin$ !uids.
7/18/2019 Gas Turbine Combustion and Power Generation
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PRINCIP%E O& OPER'TION O&G'S TURBINES
Inta(e
-Slow down incomingair
-Remove distortions
Com"ressor-Dynamically Compress
air
Combustor
-Heat addition throughchemical reaction
Turbine-Run the compressor
No))le* &ree Turbine
-Generation of thrustpower/shaft power
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'd+anta$es and ,isad+anta$es
',-'NT'GES
-Great "ower.to.
wei$ht ratio compared toreciprocating engines.
-Smaller than their
reciprocatingcounterparts of thesame power.
-%ower emission levels
,IS',-'NT'GES
-E"ensi+e:
-high speeds and high
operating temperatures -designing and manufacturing
gas turbines is a tough
problem from both theengineering and materials
standpoint
- Tend to use more #uel whenthey are idling
- They prefer a constantrather than a !uctuatin$load.
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Needs #or &uture GasTurbines
-Power Generationuel !conomy
"ow !missions
#lternative fuels-$ilitary #ircrafts
High Thrust
"ow %eight
-Commercial #ircrafts
"ow emissions
High Thrust
"ow %eight
uel !conomy
7/18/2019 Gas Turbine Combustion and Power Generation
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'natom/ o# ' 0etEn$ine
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Bra/ton C/cle
1-2Isentropic compression (in a compressor)
2-3Constant pressure heat addition
3-4Isentropic expansion (in a turbine)
4-1Constant pressure heat rejection
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P+1 Ts dia$rams
7/18/2019 Gas Turbine Combustion and Power Generation
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Gas TurbineCombustion
/# & '(')
Combustion e*ciency + ,-.
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On$oin$ Research
-!ect of inlet disturbances-Combustion in recirculating
0ows-Spray Combustion
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Conclusions
-Disturbances can lead to combustionoscillations
-Recirculating 0ow helps in reducingdisturbances-Spray combustion reduces 123
emissions through fuel staging
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#ny
4uestions?
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