Man B&W S80ME-C7 User Manual

MAN B&W 6.04
Page 10 of 12
MAN Diesel
MAN B&W MC/MCC, ME/ME-B/MEC/MEGI engines 198 43 203.3
∆M
amb%
=  0.41 x (T
air
 25) + 0.03 x (p
bar
 1000) + 0.19 x (T
CW
 25 )  0.011 x (∆p
M
 300) % [7]
∆T
amb
= 1.6 x (T
air
 25)  0.01 x (p
bar
 1000) +0.1 x (T
CW
 25) + 0.05 x (∆p
M
 300) °C [8]
where the following nomenclature is used:
∆M
amb%
: change in exhaust gas amount, in % of amount at ISO conditions
∆T
amb
: change in exhaust gas temperature, in °C compared with temperatures at ISO conditions
Fig. 6.04.10: Exhaust gas correction formula for ambient conditions and exhaust gas back pressure
m
S%
%
16
14
12
10
8
6
4
2
0
-2
-4
50 60 70 80 90 100 110
P
S%
Engine load, % specified MCR power
M
50 60 70 80 90 100 110
P
S%
Engine load, % specified MCR power
M
T
S
20
15
10
5
0
-5
-10
-15
P
S%
= (P
S
/P
M
) x 100%
∆m
S%
= 37 x (P
S
/P
M
)
3
 83 x (P
S
/P
M
)
2
+ 31 x (P
S
/P
M
) + 15
Fig. 6.04.11: Change of specic exhaust gas amount,
∆m
s%
in % at part load, and valid for FPP and CPP
P
S%
= (P
S
/P
M
) x 100%
∆T
S
= 262 x (P
S
/P
M
)
2
 413 x (P
S
/P
M
) + 151
Fig. 6.04.12: Change of exhaust gas temperature,
∆T
S
in °C at part load, and valid for FPP and CPP
178 24 623.0
178 24 635.0
c) Correction for engine load
Figs. 6.04.11 and 6.04.12 may be used, as
guidance, to determine the relative changes
in the specic exhaust gas data when running
at part load, compared to the values in the
specied MCR point, i.e. using as input P
S%
=
(P
S
/P
M
) x 100%:
∆m
s%
: change in specic exhaust gas amount,
in % of specic amount at specied MCR
point, see Fig. 6.04.11.
∆T
s
: change in exhaust gas temperature, in °C,
see Fig. 6.04.12.

Man B&W S80ME-C7 Specifications

General

Brand	Man
Model	B&W S80ME-C7
Category	Engine
Language	English