B.2.6 Mixing Point M-102
a. Panas Masuk 1 Panas Masuk Alur 40 :
Panas keluar pada alur 40, pada suhu 625 C 898 K, 5 atm.
O
2
: Qo
O2
= N
40 O2
.
898 298
2
dT Cpg
O
= 33,1867 kmoljam x
902 298
2
dT Cpg
O
= kJjam
N
2
: Qo
N2
= N
40 N2
.
898 298
2
dT Cpg
N
= 309,5781 kmoljam x
898 298
2
dT Cpg
N
= 9.142.371,2023 kJjam
CO
2
: Qo
CO2
= N
40 CO2
.
898 298
2
dT Cpg
CO
= 25,3182 kmoljam x
898 298
2
dT Cpg
CO
= 820.748,5786 kJjam
625
o
C, 5 atm
40
41 43
M-102
FC
FC FC
O
2
N
2
CO
2
H
2
O O
2
N
2
CO
2
H
2
O
O
2
N
2
1400
o
C, 5 atm 1031
o
C, 5 atm
UNIVERSITAS SUMATERA UTARA
H
2
O : Tekanan di alur 40 sebesar 5 atm Titik didih air = 424,86 K
∆H
VL424,86
= 2.107,4 kJkg Reklaitis, 1983 = 2.107,4 kJkg x 18,016 kgkmol
= 37.966,9184 Jmol Qi
H2O
= N
40 H2O
.
898 298
2
dT Cp
O H
= 97,7127 kmoljam x
dT Cpv
H dT
Cpl
O H
VL O
H 898
86 ,
424 86
, 424
298
2 2
= 4.951.462,6314 kJjam
Panas Masuk Alur 41
Panas masuk pada 41 Mixing Point M-102 sama dengan panas keluar pada alur 28 Electric Furnace B-103.
Qi
CO2
= 7.849.714,6188 kJjam Qi
N2
= 24.705.031,1608 kJjam ∑Q
41
= 32.554.745,7796 kJjam ∑Q
i
= Q
40
+ Q
41
= 48.104.680,1140 kJjam
b. Panas Keluar 1 Panas Keluar Alur 43 :
Asumsi sistem bersifat adiabatis, maka panas keluar pada Mixing Point M-102 sama dengan panas masuknya.
Total Qi = Qo = 48.104.680,1140 kJjam O
2
: Qo
O2
= N
43 O2
.
o
T O
dT Cpg
298
2
= 33,1867 kmoljam .
O
T O
dT Cpg
298
2
UNIVERSITAS SUMATERA UTARA
N
2
: Qo
N2
= N
43 N2
.
O
T N
dT Cpg
298
2
= 515,6977 kmoljam .
O
T N
dT Cpg
298
2
CO
2
: Qo
CO2
= N
43 CO2
.
O
T CO
dT Cpg
298
2
= 134,9008 kmoljam .
O
T CO
dT Cpg
298
2
H
2
O : Tekanan di alur 40 sebesar 5 atm Titik didih air = 424,86 K
∆H
VL424,86
= 2.107,4 kJkg Reklaitis, 1983 = 2.107,4 kJkg x 18,016 kgkmol
= 37.966,9184 Jmol Qo
H2O
= N
43 H2O
.
To O
H
dT Cp
298
2
= 97,7127 kmoljam x
dT Cpv
H dT
Cpl
To O
H VL
O H
86 ,
424 86
, 424
298
2 2
Total Qo = Qo
O2
+ Qo
N2
+ Qo
CO2
+ Qo
H2O
48.104.680,1140 = N
43 O2
.
O
T O
dT Cpg
298
2
+ N
43 N2
.
O
T N
dT Cpg
298
2
+ N
43 CO2
.
O
T CO
dT Cpg
298
2
+ N
43 H2O
.
To O
H
dT Cp
298
2
+
N
43 SO2
.
o
T SO
dT Cpg
298
2
48.104.680,1140 = 33,1867 x
O
T O
dT Cpg
298
2
+ 515,6977 x
O
T N
dT Cpg
298
2
+
UNIVERSITAS SUMATERA UTARA
134,9008 x
O
T CO
dT Cpg
298
2
+ 134,9008 x
dT Cpv
H dT
Cpl
To O
H VL
O H
86 ,
424 86
, 424
298
2 2
Dengan menggunakan Metode Newton-Rapshon pada program Matlab diperoleh suhu keluar Mixing Point M-102, To = 1,304K = 1031
C
Tabel B. 10 Neraca Energi Mixing Point M-102
Komponen Masuk kJjam
Keluar kJjam H
40
H
41
H
43
O
2
635.351,9220 -
1.111.670,2508 H
2
O 4.951.462,6314
- 5.418.737,1112
N
2
9.142.371,2023 24.705.031,1608
34.783.399,9431 CO
2
820.748,5786 7.849.714,6188
6.790.872,8089 Jumlah
15.549.934,3343 32.554.745,7796
48.104.680,1140 Sub Total
48104680,1140 48.104.680,1140
∆Hr -
- Q
- -
Total 48104680,1140
48.104.680,1140
UNIVERSITAS SUMATERA UTARA
B.2.7 Gas Turbine JJ-201
Fungsi : mengubah energi panas dari gas panas menjadi energi mekanik berupa
putaran poros turbin untuk menggerakkan generator pembangkit listrik.
a.Panas Masuk Alur 43