Man B&W S50MC-C8-TII - Final Calculation; Exhaust Gas Data at Specified MCR (ISO); The Exhaust Gas Temperature

MAN B&W 6.04
Page 12 of 12
MAN Diesel
MAN B&W S50MC-C8-TII 198 72 13-0.0
Exhaust gas data at specified MCR (ISO)
At specified MCR (M), the running point may be in
equations [4] and [5] considered as a service point
where P
S%
= 100, ∆m
s%
= 0.0 and ∆T
s
= 0.0.
For ISO ambient reference conditions where
∆M
amb%
= 0.0 and ∆T
amb
= 0.0, the corresponding
calculations will be as follows:
M
exh,M
= 89,400 x
8,466
____
9,960
x (1 +
+0.25
____
100
) x (1 +
0.0
___
100
)
x (1 +
0.0
___
100
) x
100.0
____
100
= 76,180 kg/h
M
exh,M
= 76,200 kg/h ±5%
T
exh,M
= 245  7.2  0.0 + 0 + 0 = 237.8 °C
T
exh,M
= 237.8 °C 15 °C
The air consumption will be:
76,180 x 0.982 kg/h = 74,809 kg/h <=>
74,809/3,600 kg/s = 20.8 kg/s
Final calculation
By means of equations [4] and [5], the final result is
found taking the exhaust gas flow M
L1
and tempera-
ture T
L1
from the ‘List of Capacities’:
M
L1
= 89,400 kg/h
M
exh
= 89,400 x
8,466
____
9,960
x (1 +
+0.25
____
100
) x
(1 +
1.11
___
100
) x (1 +
7.1
___
100
) x
80
___
100
= 65,996 kg/h
M
exh
= 66,000 kg/h ±5%
The exhaust gas temperature
T
L1
= 245 °C
T
exh
= 245  7.2  0.0  8.8  18.8 = 210.2 °C
T
exh
= 210.2 °C 15 °C