Man B&W S50ME-B9.3-TII, Project Manual

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MAN B&W 6.04
Page 12 of 12
MAN Diesel
MAN B&W S50ME-B9.3\-TII 198 90 85-7.0
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
= 80,800 x
9,612
_____
10,680
x (1 +
-0.25 ____
100
) x (1 +
0.0 ___
100
)
x (1 +
0.0 ___
100
) x
100.0 ____
100
= 72,558 kg/h
M
exh,M
= 72,600 kg/h ±15%
T
exh,M
= 235 - 3.9 + 0 + 0 = 231.1 °C
T
exh,M
= 231.1 °C ±5 °C
The air consumption will be:
72,558 x 0.982 kg/h = 71,252 kg/h <=>
71,252 / 3,600 kg/s = 19.8 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
= 80,800 kg/h
M
exh
= 80,800 x
9,612
_____
10,680
x (1 +
-0.25
____
100
) x
(1 +
1.11
___
100
) x (1 +
7.1
___
100
) x
80 ___
100
= 62,841 kg/h
M
exh
= 62,800 kg/h ±15%
The exhaust gas temperature
T
L1
= 235 °C
T
exh
= 235 - 3.9  8.8  18.8 = 203.5 °C
T
exh
= 203.5 °C ±5 °C