OO

O

Choi and Kim (2008)

CO2

PENELITIAN TERDAHULU

OO

O

PRE PROCESSING

Meshing

METODOLOGI

OO

O

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

OO

O

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

OO

O

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

OO

O

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

OO

O

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

OO

O

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

OO

ODISTRIBUSI TEPERATUR PADA

PENAMPANG HORIZONTAL

POST-PROCESSING

OO

ODISTRIBUSI TEMPERATUR PADA

PENAMPANG VERTIKAL

POST-PROCESSING

OO

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

OO

OVELOCITY VECTOR PADA PENAMPANG

HORIZONTAL

POST-PROCESSING

CCR

OO

O

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

OO

O

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

OO

O

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

OO

OVISUALISASI PATHLINE DENGAN

VELOCITY MANGNITUDE

POST-PROCESSING

Primary Air CoalSecondary Air

OO

O

POST-PROCESSING

DISTRIBUSI MASS FRACTION CO2 PADA BERBAGAI ELEVASI

OO

ODISTRIBUSI MASS FRACTION CO2 PADA

PENAMPANG VERTIKAL

POST-PROCESSING