Slide Nr. 1 of 15 Slides

Gas Turbine

Mon 8:42:26 PM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 2 of 15 Slides

Gas Turbine

Mon 8:52:36 PM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 3 of 15 Slides

Jet Engine

Mon 10:37:11 PM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 4 of 15 Slides

BRAYTON CYCLE

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 5 of 15 Slides

BRAYTON CYCLE

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 6 of 15 Slides

BRAYTON CYCLE

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 7 of 15 Slides

BRAYTON CYCLE

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 8 of 15 Slides

BRAYTON CYCLE

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 9 of 15 Slides

BRAYTON CYCLE

Tue 12:28:04 AM

( ) ( )

( ) ( )

WWW

r1TcTT1TcTTcW

1rTc1TTTcTTcW

CTnet

1

p3p343p43pT

1

p1p121p12pC

−=

−=−=−=

−=−=−=

κ

−κ−

κ

−κ

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

0r

W

p

net =∂

∂

( ) ( )12

min

max12

1

3opt,p

T

T

T

Tr

−κ

κ

−κ

κ

=

=

Slide Nr. 10 of 15 Slides

Actual Cycle without Pressure Losses

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

is,43

43T

12

1is,2

CTT

TT

TT

TT

−

−=η

−

−=η

Firing temperature Tf = T3

Ambient temperature Tamb = T1

( ) ( )43pT12pC TTcwTTcw −=−=

CTnet www −=

Slide Nr. 11 of 15 Slides

Actual Cycle without Pressure Losses

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

add

net

q

wEfficiencyThermal =η

CTnet www −= ( )23padd TTcq −=

T

net

w

wRatioWork =

Slide Nr. 12 of 15 Slides

Actual Cycle without Pressure Losses

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

( )

( ) ( )

−

η

−−−

η−η

=ηκ−κκ−κ

κ−κ

1p

C

1p

ambambf

C

1pamb

fT

cycler

11

1rTTT

rTT

Overall cycle efficiency as a function of the firing temperature and pressure ratio (based on a compressor efficiency 87% and turbine efficiency 92%).

Slide Nr. 13 of 15 Slides

Actual Cycle without Pressure Losses

Tue 12:28:04 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

Slide Nr. 14 of 15 Slides

The Use of Power Turbine

Tue 12:28:04 AM

PTnet ww =

( )23padd TTcq −=

net

w

wRatioWork =

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009

add

net

q

wEfficiencyThermal =η

TwRatioWork =

T-s ????

Slide Nr. 15 of 15 SlidesTue 12:28:31 AM

Chapter 4:

Gas Turbine

Dr. Eng. Sameh Shaaban

21 December 2009