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BRAYTON CYCLEOPEN MODEL CLOSED MODEL

• Ideal gas turbine cycle

• 1-2: Isentropic compression

• 2-3: Isobaric heat addition

• 3-4: Isentropic expansion

•

4-1: Isobaric heat rejection

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BRA!"# $$%& 'I!( I#!&R$""%I#)* R&(&A!A#+ R&)&#&RA!I"#

•  !he aim o, this project is to study the per,ormance o, the

arious components o, a standard Brayton cycle along .itha recuperator* intercooler and reheater and optimi/e theprocess0

•  !his has to be done by eeping the heat loss due toirreersibilities and pressure loss small* but allo.ing

eectie heat trans,er throughout the system0

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Supercritical Fluids• ubstance aboe its critical temperature and

pressure

• #o distinct liuid and gas phase

•  !ypical density and compressibility

• &xample: $"2 * helium* .ater etc0

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Interesting Facts • 5!unable6 properties lie density* solent

po.er etc0

• #o sur,ace tension 7no liuid-apor boundary8

• $ompletely miscible

Supercritical- CO •  9' : 4401 gm;g-mol

•  !c : 3402< = 

•

>c : ?03@ 9>a

 

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C!"press!rs

Axial $entri,ugalReciprocating

 A compressorReduces the volumeof a uid 

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Tur#ines

A )eneric team turbine

 A turbine uses the energy of aowing uid to create rotationalmotion of a shaft.

)& %92< )as !urbine &ngine