penelitian terdahuludigilib.its.ac.id/public/its-paper-19670-2109106005...o o o t = 680 c t = 680 ct...
TRANSCRIPT
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Choi and Kim (2008)
CO2
PENELITIAN TERDAHULU
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PRE PROCESSING
Meshing
METODOLOGI
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T = 680 °C
T = 680 °C T = 639 °C T = 558 °C T = 465 °C
T = 465 °C
T = 360 °C
Air Pre-heater 1
Air Pre-heater 2
6
7
8
5
4
4321
T = 338 °C
T = 247 °C
T = 151 °C
Total loss Indirect Method ASME PTC 4.1
Water wall tube menggunakan balance energy
Heat Transfer Heat Flux
METODOLOGI
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METODOLOGIPRE PROCESSING
No Posisi Heat Flux (watt/m2 )
1. Platen Superheater 3.656
2. Superheater Cass 2 6.039
3. Superheater Class 1 5.932
4. High pressure Economizer 5.778
5. Air Preheater 1 329
6. Air Preheater 2 1.358
7. Low Pressure Economizer 4.048
8. Water wall tube 21.679
Hasil Perhitungan Heat Flux
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No Parameter Identifikasi
1. Model Solver Pressure base/SteadyEnergy Aktif
Viscous Model K-ε StandardRadiation Model P 1
Species Model Species Transport, Eddy-Dissipation
NOx (Thermal NO & Prompt NO)
Discrete Phase Model Default
2. Material Mixture Coal hv + O2 CO2 + H2O
Combusting-particle Coal hv (high volatile)
PROCESSING
METODOLOGI
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No Parameter Identifikasi
3. Boundary Condition Primary air Mass flow rateSecondary air Velocity inlet
Coal Injection
Outlet Pressure Outlet
4. Injection Injection 1
Injection 2
Injection 3
Injection 4
5. Control solution Pressure velocity Coupling
SIMPLEC
Discretization First order
PROCESSING
METODOLOGI
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ANALISA HASILPOST-PROCESSING
DATAKUANTITATIF
DISTRIBUSI TEMPERATUR
DATA KUALITATIF
DISTRIBUSI TEMPERATUR
VELOCITY MAGNITUDE
PATHLINES
DISTRIBUSI CO2
DISTRIBUSI NOx
PARTICLE RESIDENCE TIME
VELOCITY MAGNITUDE
DISTRIBUSI CO2
DISTRIBUSI NOx
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ANALISA HASILPOST-PROCESSING
A B C D E F G H
CCR 680 639 558 465 360 338 247 151
Numerik 661 640 538 487 447 437 408 362
0
100
200
300
400
500
600
700
800
Tem
pera
tur
(°C)
Data Kuantitatif Distribusi Temperatur di dalam boiler
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ODISTRIBUSI TEPERATUR PADA
PENAMPANG HORIZONTAL
POST-PROCESSING
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ODISTRIBUSI TEMPERATUR PADA
PENAMPANG VERTIKAL
POST-PROCESSING
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ODISTRIBUSI TEPERATUR PADA
PENAMPANG VERTIKAL
POST-PROCESSING
Posisi inlet udara dan
bahan bakar
3
5
7
9
11
13
15
17
19
21
850 900 950 1000 1050 1100 1150 1200
Elev
asi (
m)
Temperatur (K)
center 1.5 m dari center
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OVELOCITY VECTOR PADA PENAMPANG
HORIZONTAL
POST-PROCESSING
CCR
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POST-PROCESSING
GRAFIK DISTRIBUSI KECEPATAN PADA PRIMARY AIR
05
101520253035404550
-4 -3 -2 -1 0 1 2 3 4
Kece
pata
n (m
/s)
center furnace (m)
Elevasi 10,1 Elevasi 11 m Elevasi 12 m
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POST-PROCESSING
05
101520253035404550
-4 -3 -2 -1 0 1 2 3 4
Kece
pata
n (m
/s)
center furnace (m)
Elevasi 9,6 m Elevasi 10,55 m
Elevasi11,5 m Elevasi 12,5 m
GRAFIK DISTRIBUSI KECEPATAN PADA SECONDARY AIR
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POST-PROCESSING
GRAFIK DISTRIBUSI KECEPATAN SEPANJANG KETINGGIAN FURNACE
3579
111315171921
0 5 10 15 20 25 30 35 40 45 50
Elev
asi (
m)
Kecepatan (m/s)
center 1.5 m dari center
Posisi inlet udara dan
bahan bakar
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OVISUALISASI PATHLINE DENGAN
VELOCITY MANGNITUDE
POST-PROCESSING
Primary Air CoalSecondary Air
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POST-PROCESSING
DISTRIBUSI MASS FRACTION CO2 PADA BERBAGAI ELEVASI
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ODISTRIBUSI MASS FRACTION CO2 PADA
PENAMPANG VERTIKAL
POST-PROCESSING