MAN B&W
6.04
Page of 2
MAN Diesel
198 61 71-5.0
MAN B&W S46MC-C8, S42MC7, S35MC7,
L35MC6, S26MC6
Auxiliary Machinery Capacities
The dimensioning of heat exchangers (coolers)
and pumps for derated engines can be calculated
on the basis of the heat dissipation values found
by using the following description and diagrams.
Those for the nominal MCR (L
), may also be used
if wanted.
The nomenclature of the basic engine ratings and
coolers, etc. used in this section is shown in Fig.
6.0.0 and 6.0.02.
Cooler heat dissipations
For the specified MCR (M) the following three dia-
grams in Figs. 6.04.0, 6.04.02 and 6.04.03 show
reduction factors for the corresponding heat dis-
sipations for the coolers, relative to the values
stated in the ‘List of Capacities’ valid for nominal
MCR (L
).
The percentage power (P
M%
) and speed (n
M%
) of L
ie: P
M%
= P
M
/P
L
x 00%
n
M%
= n
M
/n
L
x 00%
for specified MCR (M) of the derated engine is
used as input in the abovementioned diagrams,
giving the % heat dissipation figures relative to
those in the ‘List of Capacities’,
Q
air%
= 00 x (P
M
/P
L
)
.68
x (n
M
/n
L
)
– 0.83
x k
O
k
O
= + 0.27 x ( – P
O
/P
M
) =
178 53 75-3.1
Fig. 6.04.01: Scavenge air cooler, heat dissipation Q
air%
in
point M, in % of the L
1
value Q
air, L1
and valid for P
O
= P
M
..
As optimising point O = M, correction k
O
= 1
Q
jw%
= e
(– 0.08 x ln (n
M%
)
+ 0.8072 x ln (P
M%
) + .264)
Fig. 6.04.02: Jacket water cooler, heat dissipation Q
jw%
in point M, in % of the L
1
value Q
jw, L1
178 54 64-0.1
Q
lub%
= 67.3009 x ln (n
M%
) + 7.6304 x ln (P
M%
)
245.074
Fig. 6.04.03: Lubricating oil cooler, heat dissipation
Q
lub%
in point M, in % of the L
1
value Q
lub, L1
178 53 77-7.1
3PECIFIEDæ-#2æPOWERææOFæ,
0
-
N
-
3PECIFIEDæ-#2æENGINEæSPEEDææOFæ,
,
,
,
,
/-
1
JW
3PECIFIEDæ-#2æPOWERææOFæ,
0
-
N
-
3PECIFIEDæ-#2æENGINEæSPEEDææOFæ,
,
,
,
,
1
LUB
-
3PECIFIEDæ-#2æPOWERææOFæ,
0
-
N
-
3PECIFIEDæ-#2æENGINEæSPEEDææOFæ,
,
,
,
,
1
AIRæ
æ
æ
æ
æ
-
Summary of Contents for B&W L35MC6-TII
Page 4: ......
Page 10: ......
Page 18: ......
Page 19: ...MAN B W MAN Diesel Engine Design 1 ...
Page 20: ......
Page 35: ...MAN B W MAN Diesel Engine Layout and Load Diagrams SFOC 2 ...
Page 36: ......
Page 52: ......
Page 64: ......
Page 65: ...MAN B W MAN Diesel Turbocharger Selection Exhaust Gas By pass 3 ...
Page 66: ......
Page 72: ......
Page 73: ...MAN B W MAN Diesel Electricity Production 4 ...
Page 74: ......
Page 95: ...MAN B W MAN Diesel Installation Aspects 5 ...
Page 96: ......
Page 132: ......
Page 146: ......
Page 147: ...MAN B W MAN Diesel List of Capacities Pumps Coolers Exhaust Gas 6 ...
Page 148: ......
Page 171: ...MAN B W MAN Diesel Fuel 7 ...
Page 172: ......
Page 186: ......
Page 187: ...MAN B W MAN Diesel Lubricating Oil 8 ...
Page 188: ......
Page 203: ...MAN B W MAN Diesel Cylinder Lubrication 9 ...
Page 204: ......
Page 213: ...MAN B W MAN Diesel Piston Rod Stuffing Box Drain Oil 10 ...
Page 214: ......
Page 215: ......
Page 217: ...MAN B W MAN Diesel Central Cooling Water System 11 ...
Page 218: ......
Page 223: ...MAN B W MAN Diesel Seawater Cooling System 12 ...
Page 224: ......
Page 234: ......
Page 235: ...MAN B W MAN Diesel Starting and Control Air 13 ...
Page 236: ......
Page 242: ......
Page 243: ...MAN B W MAN Diesel Scavenge Air 14 ...
Page 244: ......
Page 256: ......
Page 257: ...MAN B W MAN Diesel Exhaust Gas 15 ...
Page 258: ......
Page 272: ......
Page 273: ...MAN B W MAN Diesel Engine Control System 16 ...
Page 274: ......
Page 289: ...MAN B W MAN Diesel Vibration Aspects 17 ...
Page 290: ......
Page 304: ......
Page 305: ...MAN B W MAN Diesel Monitoring Systems and Instrumentation 18 ...
Page 306: ......
Page 328: ......
Page 329: ...MAN B W MAN Diesel Dispatch Pattern Testing Spares and Tools 19 ...
Page 330: ......
Page 360: ......
Page 361: ...MAN B W MAN Diesel Project Suppport and Documentation 20 ...
Page 362: ......
Page 371: ...MAN B W MAN Diesel Appendix A ...
Page 372: ......