-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
1/13
LIST OF SYMBOLS AND NOMENCLATURE
Abbreviations
ISO International Organization for Standardization
TIT Turbine Inlet Temperature
TIC Turbine Inlet Cooling
Symbols Units
Cp
[kJ/kgC]
COP
[-]
LHV [kJ/kg]
h [kJ/kg]
HR Heat rate
m
P [Pa]
P [Pa]
Q
[kW]
r [-]
T Temperature [C]
Tb [C]
Tw Wet-bulb temperature [C]
W
Power output [MW]
SFC
doi: 10.5028/jatm.2012.04032012
Analysis of Gas Turbine Performance with Inlet Air Cooling
Techniques Applied to Brazilian Sites
Ana Paula Santos1, Cludia R. Andrade2,*1
2
Abstract:Frrph r whr pwrm hh r pr rr h
wrmmh rb r h p r r p r-
r h pwrp b h rb r hhrm wr h
mprr mprr r rb h pr p r -m-w
mb mh h p m r rprpr h mprr h r h
r r hhrrm wr h mr r C h rb
pwrp h r mh r b rr mprr rmprr Thr r
w b m rr b r Th r m - m h pr
pr r m h pr wr r h rb rmprrTh mmp w w h r mh mpr brp h mh
h mmw hrh h hr h rm h rmh r h
pr hrmm rb prrm rr h r pwr
p hrm r rmprr r hm Th r b
whh m r mpr whh h wh hr m -C Th h
hr h r mp mpm rr mprr
r hm h rb w rr mh rw r
mpr bw hrm mh brp hw h h brp hrpr h
hh rm r r whwr r O h hrh pr r
r h w r b wh m p
Keywords: rb Trb TC pr Chrbrp
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012 341
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
2/13
[-]
[-]
[-]
[-]
[kgwater
/kgair
]
Subscripts
0
a
a
C
MC
CL Cooling load
g in Input
N Net
Turbine
T Total
h
w water
INTRODUCTION
-
-
-
Jaber a
-
-
and
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012342
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
3/13
GAS TURBINE CYCLE
-
Net.W
0
06
050403
TurbineCompressor
Air ambient
CombusonChamber
P P0 03=
P04
P r P04 03$=
-
T04
P
PT
TT1
c
04
03
03
04
1
03h
= - +c
c-
c m= G
W m C T T ,C a pa avg 04 03$= -o o ^ h
ma C
pa
ag
-
P05
P P PCombustor05 04 D= -
Q m C T T ,in a pg avg 05 04$ $= -o o ^ h
Cpg
ag
LHV
/m
Q LHV f
Combustor
in
h=o o
Cmbr
/T T T
P P1
1t06 0 5 04
05 06
1
$h= - - c
c-
c m= G
P
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012 343
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
4/13
W m C T T ,t T pg avg 05 06$= -o o ^ h
mT
m m mT a f= +o o o
and Cpg
ag
W W WN T C= -o o o
SFCW
m3600
N
f$
=o
o
HR SFC LHV$=
SFC LHV
3600th
$
h =
INLET AIR COOLING SYSTEMS
-
Net
.W
01
02
0
06
050403
Compor
Cooingym
Evaporative cooling
Coolingmedia
Air cooledAmbient Air
T Tb Tb Tw03 02 02 02f= - -^ h
m mw a 02 03$ ~ ~= -o o ^ h
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012344
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
5/13
ma
02
03
-
Q m C T T ,CL a pa avg 02 03$ $
= -o
o ^ h
ma C
paag
Absorption and mechanical chiller systems
-
tion cooling.
Ambient air
Chilled water
Air cooled to
gas turbine inlet
a
Q m h h h ,CL a w02 03 03 02 03$ $ ~ ~= - - -o o ^ ^h h6 @
h02
and h03
m mw a 02 03$ ~ ~= -o o ^ h
-
a
-
a
-
-
WCOP
QMC
CL=o o
-
W W W W N t C MC= - -o o o o
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012 345
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
6/13
-
a a
100% RH
60% RH
40% RH
20% RH
10% RH
Inlet Chilling
Process
Enthalpy
Btu Per Pound
of Dry Air
Evaporative
Cooling Process
Specific
Humidity
Dry Bulb Temperature
40
35
30
25
20
15
4 16 27 38 49.000
.005
.010
.015
.020
C
RESULTS AND DISCUSSIONS
-
-
taining
11 [-]
Turbine inlet temperature
turbine
100 [mmH2O]
200 [mmH2O]
-
-
72
76
80
84
88
92
96
100
104
108
112
116
[%]
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
ISO Conditions:T = 15 C
= 60 %
TIT = 1385 K
Heat rate
Power output
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012346
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
7/13
-
-
4 8 12 1 6 20 24 28 32 36 40 44 48
Intake temperature [C]
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
T
[C]
TIT = 1385 K
= 60%
= 0.95
= 0.90
= 0.85
temperature drop.
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Poweroutp
ut[MW]
TIT = 1385 K
= 0.90
= 18%
= 60%
Base-case
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
30.5
31.0
Thermalefficiency[%]
TIT = 1385 K
= 0.90
= 18%
= 60%
Base-Case
4 8 12 16 20 24 28 32 36 40 44 48-4
0
4
8
12
16
20
24
28
32
36
40
T
[C]
Intake temperature[C]
TIT = 1385 K
Absorption chiller: = 18% and 60%
Evaporative cooling: = 0.90 and = 18%
Evaporative cooling: = 0.90 and = 60%
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012 347
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
8/13
-
a
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature[C]
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Poweroutput[MW]
TIT = 1385 K
Absorption chiller: =18%
Absorption chiller: =60%
Base-case
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature[C]
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
30.5
Thermaleffic
iency[%]
TIT = 1385 K
Absorption chiller: = 18%
Absorption chiller: = 60%
Base-case
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
30
31
32
33
34
35
36
37
38
39
Poweroutput[MW]
TIT = 1385 K
= 60 %
COP = 7.0
COP = 4.5
COP = 2.0
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
30
31
32
33
34
35
36
37
38
39
Poweroutp
ut[MW]
TIT = 1385 K
= 60 %
COP = 7.0
COP = 4.5
COP = 2.0
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012348
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
9/13
-
obtained at
-
-
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
34.5
35.0
35.5
36.0
36.5
37.0
37.5
38.0
38.5
39.0
Poweroutput[MW]
TIT = 1385 K
COP = 4.5
= 18%
= 60%
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
Massflow
wa
ter[kg/s]
ma
= 141.16 kg/s
TET = 1385 C
= 18%
Evaporative cooling: = 0.90
Absorption chiller
Mechanical chiller: COP = 4.5
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
Coolingloa
d[MW]
TIT = 1385 K
= 18 %
Mechanical chiller: COP = 4.5
Absorption chiller
Evaporative cooling: = 0.90
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012 349
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
10/13
-
-
Table 2.
Site 25.0
Latitude []
Longitude [] - 41.34
101.25
-
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
26
28
30
32
34
36
38
40
42
Poweroutput[MW]
TIT = 1385 K
= 18%
Evaporative cooling:
Absorption chiller
Compression chiller: COP = 4.5
Base case
= 0.90
4 8 12 16 20 24 28 32 36 40 44 48
Intake temperature [C]
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
30.5
31.0
Thermaleffic
iency[%]
TIT = 1385 K
= 18 %
Evaporative cooling:
Absorption chiller
Compression chiller: COP = 4.5
Base-case
= 0.90
27.0
27.5
28.0
28.5
29.0
29.5
30.0
30.5
31.0
31.5
32.0
32.5
33.0
33.5
34.0
Months
DECOCTSEPAUGJULJUNMAYAPR NOVMARFEBJAN
Ambienttemperature[C]
70
71
72
73
74
75
76
77
78
79
80
81
DECNOVOCTSEPAUGJULJUNMAYAPRMARFEBJAN
Relativehu
midity[%]
Months
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012350
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
11/13
Oprar NainaSimari
-
-
a a
29.0
29.5
30.0
30.5
31.0
31.5
32.0
32.5
33.0
33.5
34.0
34.5
35.0
Months
DECOCTSEPAUGJULJUNMAYAPR NOVMARFEBJAN
Ambienttemperature[C]
DECNOVOCTSEPAUGJULJUNMAYAPRMARFEBJAN
Months
25
30
35
40
45
50
55
60
65
70
75
80
85
Relativehu
midity[%]
Evaporative cooling: = 0.90
Absorption chiller
Mechanical chiller: COP = 4.5
DECOUTSEPAUGJUL NOV0
400
800
1,200
1,600
2,000
2,400
2,800
3,200
3,600
4,000
4,400
Incremen
talelectricenergygeneration[MWh]
0
400
800
1,200
1,600
2,000
2,400
2,800
3,200
3,600
4,000
4,400
4,800
5,200
Mounths
DECOUTSEPAUGJUL NOV
Evaporative cooling: = 0.90
Absorption chiller
Mechanical chiller: COP = 4.5
Incrementalelectricenerg
ygeneration[MWh]
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012 351
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
12/13
-
-
CONCLUSIONS
T0
-
ACKNOWLEDGMENTS
Table 3. I
43.28
32.02
43.24
53.00
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012352
-
7/25/2019 Analysis of TTGh Inlet Air Cooling Techniques Applied to Brazilian Sites 2012
13/13
REFERENCES
-
-
-
a
-
a -
a
-
a
-
a
-
a
-
-
a
J. Aerosp. Technol. Manag., So Jos dos Campos, Vol.4, No 3, pp. 341-353, Jul.-Sep., 2012 353