At
present, oil fuel for boiler is being sold much higher than
the oil fuel sold through gasoline station. Above price of
Solar listed at the gasoline station at Rp1,650 per liter
is for public use and the same solar fuel for industry are
being distributed through different channels by the government
Pertamina at about Rp2,100-/per liter.(Solar=Diesel Oil)
|
Fuel
Consumption ( 1 ton steam )
Q = 1000 Kg/hr heat output
T = 179 deg.C saturated steam
P = 10 Kg/cm2 steam pressure
Tf = 100 deg C. feedwater temperature
hs = 663 Kcal/Kgtotal heat of steam
hf = 65 Kcal/kgheat from feedwater
Hv = 5700 Kcal/kgLow calorie coal a.r.
Hv = 6200 Kcal/kgHigh calorie coal a.r.
Eff= 0.8 Boiler efficiency
Fc = Heat output x (total heat - heat in water)
Eff x Fuel heating Value
Fc = Q x (hs-hf)
Eff x Hv
LOW CALORIE COAL CONSUMPTION
Fc = 1000 X (663 - 65)=131.14 Kg
0.8 x 5700
HIGH CALORIE COAL CONSUMPTION
Fc = 1000 X (663 - 65)=120.56 Kg
0.8 x 6200 |
|
| COMPARISON |
|
COST OF STEAM PER TON
|
| KIND OF FUEL |
HEAT VALUE
KCAL
|
UNIT
|
PRICE
(RP)
|
DELIVERY
(Rp)
|
TOTAL
(Rp)
|
COST
Rp/Kcal
|
CONSUMPTION
per ton of steam
|
COST OF STEAM
Rp/ton of steam |
| SOLAR |
9,063
|
LITER
|
2300
|
60
|
2360
|
0.264
|
Liter
|
77.89 |
183,820
|
| I.D.O. |
9,270
|
LITER
|
2300
|
60
|
2360
|
0.25458
|
Liter
|
76.15 |
179,714
|
| RESIDUE OIL |
9,766
|
LITER
|
2300
|
60
|
2360
|
0.24165
|
Liter
|
72.77 |
171,737
|
| NATURAL GAS |
8,850
|
 |
|
|
|
|
|
|
|
NUT COAL 20-50 mm
(high kcal) |
6,200
|
KG
|
360
|
60
|
420
|
0.06774
|
Kg
|
120.56 |
50,635
|
FINE COAL 0-10 mm
(low kcal) |
5,700
|
KG
|
245
|
60
|
305
|
0.05351
|
Kg
|
131.14 |
39,997
|
Coal Price is ex-Cirebon Terminal |
 |
| |
|
