MAN B&W S65ME-C8.2-GI-TII, Project Manual

Page: 291 / 395

MAN B&W 15.05
Page 3 of 3
MAN Diesel MAN B&W MC/MCC, ME/MEC/MEGI/ME-B engines 198 40 949.3
90
60
30
90
45
D
R
D
R
D
D
R
D
Changeover valves
Changeover valve
of type with con-
stant cross section
ζ
a = 0.6 to 1.2
ζ
b = 1.0 to 1.5
ζ
c = 1.5 to 2.0
Changeover valve
of type with volume
ζ
a =
ζ
b = about 2.0
M: Measuring points
Fig. 15.05.01: Pressure losses and coefficients of resistance in exhaust pipes
178 32 091.0 178 06 853.0
R = D
ζ
= 0.28
R = 1.5D
ζ
= 0.20
R = 2D
ζ
= 0.17
R = D
ζ
= 0.16
R = 1.5D
ζ
= 0.12
R = 2D
ζ
= 0.11
ζ
= 0.05
R = D
ζ
= 0.45
R = 1.5D
ζ
= 0.35
R = 2D
ζ
= 0.30
ζ
= 0.14
Outlet from
ζ
= 1.00
top of exhaust
gas uptake
Inlet (from
turbocharger)
ζ
= – 1.00
Pressure losses and coefficients of resistance in exhaust pipes
Spark
arrester
Silencer
Exhaust
gas boiler
M
M
M
M
M
T/C
M
tc
M
tc
p
1
p
2
p
tc
p
3
a
a
b
c
a b
90
60
120