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6 4
POWER PLANT 1 - 3 2
GAS TURBINE 4 - 6 2
POWER PLANT
1. 27 MWe 60 bar, 450C Turbine 3 bar Feedheater Turbine Condenser 730 mm Isentropic efficiency Turbine 87%
. Turbine kg/kg Turbine Pump
. GeneratorPower transmission Turbine Generator 95% 98%
. Overall efficiency 90% 10% Auxiliary
(25 )
1P = 60 bar
1T = 450C
2P = 3 bar
3P = vac. 730 mm.Hg.
t = 87%
1h = 3,301 kJ/kg
1s = 6.719 kJ/kgK
3 bar, satT = 133.5C
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fh = 561 kJ/kg
fgh = 2,164 kJ/kg
Q 2'12' x5.3211.672kJ/kgK6.719ss +===
0.9485x 2' = kJ/kg2,613.572,1640.9485561h 2' =+=
2,613.573,301
h3,301
hh
hh0.87 2
2'1
21t
=
==Q
kJ/kg2,702.93h 2 = 3 bar, kJ/kg2,725h g =
2 22 x2,1645612,702.93h +== 0.99x 2 =
( ) kJ/kgK6.93985.3210.991.672s2 =+=
3's= 0.04 bar[ vac.,Hgmm.730PP 3'3 == = 760-730 = 30 mm.Hg 1.01325 bar = 760 mm.Hg bar0.04P3 = ] 6.9398 = 0.422 + 8.051 3'x 3'x = 0.8096 kJ/kg2,090.672,4330.8096121h 3' =+=
2,090.672,702.93
h2,702.93
hh
hh0.87 3
3'2
32t
=
==
kJ/kg2,170.26h 3 = 33 x2,4331212,170.26h +== 0.842x 3 =
Feed Heater Heater( ) ( )( )561621 hhm1hhm =
( ) ( )( )511 h561m15612,702.93m =
54 hh =
( )( )121561m1m2,141.93 11 =
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kg/kg0.1704m1 = ( ) ( )( )32121t hhm1hh1W +=
( ) ( )26.170,293.702,28296.093.702,2301,3 +=
kJ/kg1,039.97441.90598.07 =+=
eMW27OutputNet = 98%95%, mg ==
Turbine eMW290.980.95
27=
=
Boiler 3s 1029m1,039.97 =&
100.39kg/s27.886m s ==& /h
Boiler
OverallBoilerQ
OutputNet90%,
==
( )0.9
hhm
MW2710%MW27
71S
ee
=
&
( )7
3
h3,30127.886
0.91024.3
=
Pump Work, 76 hh =
( )5613,30127.886
1021.87
3
Overall
=
28.62%=
2. 15 bar 300C Parsons turbine 20 stages 0.1
bar Turbine Stage efficiency 75% Reheat factor 1.05 10 MW Turbine Stage
Turbine 1 bar Blade 20 Blade speed ratio = 0.7 Diameter
Turbine Blade =10
1
Blade Blades (25 )
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15 bar, 300C Parsons Turbine 20 Stages 0.1 bar
et MW10W1.05,factorReheat75%,Stage == Stage Degree of Reaction = 50%- Stator Rotor
OptimumC
U
1
W Stage 2Um&= Turbine ( )o Stage ( )s
R so = R Reheat factor
1C
UOptimum 1.050.75o = 7875.0=
o'i
oi
hh
hh
=
15 bar, 300C,
kJ/kg3,039h i =
kJ/kgK6.919s i =
0.1 bar,
kJ/kg921h f =
kJ/kg2,392h fg =
kJ/kgK649.0s f =
kJ/kgK5.7s fg =
o'o'i x7.50.649s6.919s +=== 0.836x o' = ( ) kJ/kg2,191.72,3920.836192h o' =+=
o
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2,191.73,039
h3,0390.7875 o
= kJ/kg2,371.76h o =
20 Stages Stage sW= Stage
20
667.24
20
hh oi =
=
kJ/kg33.36=
2U 33.36U2 =
m/s182.65U = eMW10W =
( ) e3
oi kW1010hhm =&
31010m667.24 =&
kg/s14.99m =& Turbine Turbine, P = 1 bar, Blade = 20 2
0.7C
U
1
=
Stage,( )UCosC2UVUW 11ws ==
21 = Degree of Reaction 50% ( )11s C0.720CosC2UW =
( )[ ]111 C0.70.9397C2C0.7 = 32
1 1033.36C0.8256 == m/s201.02C1 =
m/s140.71U =
, 11a SinCC = aC 1C
= 20Sin201.02Ca
m/s68.75=
Axial-flow Turbine
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v
CACAm aa ==&
1 bar, Saturated Steam, /kgm1.694v 3g =
hdA m=
md h
10
dh m=
10
dA
2m=
1.694
68.75
10
d14.99m
2
m ==&
1.1757d 2m =
m1.084dm =
N
60
NdU m=
( )
rpm.2,479.11.084
60140.71N =
=
3. (25 )
3.1 3.2
1.
1,000 W/m2 () 700 W/m2
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2 Solar Thermal powerplant ( ) Solar Photovoltaic Plant (,Solar Cell)
Solar Photovoltaic Plant (Direct Current, DC) (Alternate Current, AC) (Battery)
( 150 1 ) 15 /
2.
(Propeller Wind Turbine) (Multiple Blade) (High Torque)
( 4 /)
5 10
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GAS TURBINE
4. 7:1 1,000 K 85 % 90% 288 K 750 Cp 1.005 kJ/kg K
(25 )
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5. Gas turbine power plant Compressor 6 :1 Recuperator Turbine 2 Compressor Turbine Recuperator Turbine 800C Compressor 15C Isentropic efficiency Compressor 80% Turbine 85% 98%
(P) Kinetic energy Potential energy Plant Power0.7 kg/s Thermal ratio Effectiveness Heat exchanger 0.65 = 42.6 MJ/kg 97% Specific fuelconsumption kg/kWh = 1.005 1.147 kJ/kgK
( ) = 1.4 1.333 (25 )
80%c =
98%85%, mtt 21 ===
MJ/kg42.6HV =
kJ/kgK1.147CkJ/kgK,1.005C97%, 9a ppb === 1.3331.4, ga ==
( ) 1.66866rT
T 0.28571.4
0.4
1
c
1
2' a
a
====
K480.522881.668T2' ==
12
12'c
TT
TT0.8
==
240.650.8
288480.52TT 12 =
=
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K528.65T2 =
K1,073C800T3 ==
9
9
1
1
t
4'
3 rT
T
= (1)
cmt WW 1 =Q
af mm ( ) ( )12p43pm TTCTTC ag =
K215.1698.0
240.651.1471.005TT 43 ==
K84.578215.161,073T4 ==
4'3
43
tTT
TT0.85
1
==Q
K13.5320.85
215.16TT 4'3 ==
K819.87253.131,073T4' ==
(1)
1.309rr819.87
1,073 0.2498t
1.333
0.333
t 11===
( ) 2.9384r1.3091t
4.003==
2.0422.9384
6r2t
==
( ) 1.19522.042rT
T 0.24981
t
5'
4 9
9
2===
K717.7381.1952
857.84T5' ==
5'4
54t
TT
TT0.85
2
==
( ) K119.087717.738857.840.85TT 54 ==
K738.753119.087857.84T5 ==
( )54pam TTCm/pPower g =
KkgK
kJ
s
kg087.1911.1470.70.98 =
kW703.39=
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528.65738.753
TT
TT
TT0.65 27
25
27
=
==
K567.361TT 27 =
K665.217528.65136.567T7 =+=
C/C, ( )73paf TTCmHVm g =
( ) /skg0.00769665.2171,07342,600
1.1470.7m ff =
=
/skg0.00793
97.0
00769.0m
ff==
/kWhkg0.2953h
s3,600
kW93.703
kg/s0.00793
W
mf
f ==
42,6000.00793
93.703
HVm
W
f
cy
==
27.74%=
6. SPP Combined cycle 3.16 kg/s =156 /GJ Gasturbine = 25.79 MW Steam turbine 11.45 MW 2
20 bar 250C 2.6 kg/s 30 bar 250C 1.8 kg/s 35.5 MJ/kg (25 )
SPP CC
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NG = 156 /GJHV = 35.5 MJ/kg
GT 25.79 MWST 11.45 MW
1. 20 bar 250C 2.6 kg/s 2. 30 bar 250C 1.8 kg/s
STGT21
+++=
+=cc
1 MW7.552,9042.6hm11 ss
===
2 MW5.1442,8581.8hm22 ss
===
MW112.1835.53.16HVm f ===
44.51%112.18
49.934
112.18
11.4525.795.1447.55cc ==
+++=
Recommended