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MAN Diesel
L27/38-Tll GenSet Data
6-9L27/38: 350 kW/cyl., 720 rpm, MGO
Reference Condition: Tropic
Air temperature
LT-water temperature inlet engine (from system)
Air pressure
Relative humidity
Temperature basis
Setpoint HT cooling water engine outlet
Setpoint LT cooling water engine outlet
Setpoint Lube oil inlet engine
Number of Cylinders
Engine output
Speed
Heat to be dissipated
3)
Cooling water (C.W.) Cylinder
Charge air cooler; cooling water HT
Charge air cooler; cooling water LT
Lube oil (L.O.) cooler
Heat radiation engine
Flow rates
4)
Internal (inside engine)
HT circuit (cylinder + charge air cooler HT stage)
LT circuit (lube oil + charge air cooler LT stage)
Lube oil
External (from engine to system)
HT water flow (at 40°C inlet)
LT water flow (at 38°C inlet)
Air data
Temperature of charge air at charge air cooler outlet
Air flow rate
Charge air pressure
Air required to dissipate heat radiation (engine) (t
Exhaust gas data
6)
Volume flow (temperature turbocharger outlet)
Mass flow
Temperature at turbine outlet
Heat content (190°C)
Permissible exhaust back pressure
Pumps
a) Engine driven pumps
HT circuit cooling water
LT circuit cooling water
Lube oil (4.5 bar)
b) External pumps
8)
Diesel oil pump
Fuel oil supply pump
Fuel oil circulating pump
Starting air data
Air consumption per start, incl. air for jet assist
1) LT cooling water flow first through LT stage charge air cooler, then
through lube oil cooler, water temperature outlet engine regulated by
mechanical thermostat.
2) HT cooling water flow first through HT stage charge air cooler, then
through water jacket and cylinder head, water temperature outlet en-
gine regulated by mechanical thermostat.
3) Tolerance: + 10% for rating coolers, - 15% for heat recovery.
Fig. 4.09.02a: List of capacities for L27/38, 720 rpm, IMO Tier II
MAN B&W 98-50MC/MC-C/ME/ME-C/ME-B/-GI-TII,
46-35ME-B/-GI-TII engines
1)
2)
-t
= 10°C)
2
1
(2.5 bar)
(2.5 bar)
(5 bar at fuel oil inlet A1)
(4 bar discharge pressure)
(8 bar at fuel oil inlet A1)
(IR/TDI)
°C
°C
bar
%
°C
79 nominal (Range of mechanical thermostatic element 77 to 85)
°C
35 nominal (Range of mechanical thermostatic element 29 to 41)
°C
66 nominal (Range of mechanical thermostatic element 63 to 72)
-
6
kW
2,100
rpm
kW
315
kW
668
kW
175
kW
282
kW
70
m
/h
58
3
m
/h
58
3
m
/h
64
3
m
/h
21.5
3
m
/h
58
3
°C
50
m
/h
12,792
3
5)
kg/kWh
6.67
bar
m
/h
22,682
3
m
/h
27,381
3
7)
t/h
14.4
°C
388
kW
857
mbar
m
/h
58
3
m
/h
58
3
m
/h
64
3
m
/h
1.48
3
m
/h
0.71
3
m
/h
1.48
3
Nm
2.9
3
4) Basic values for layout of the coolers.
5) Under above mentioned reference conditions.
6) Tolerance: quantity +/- 5%, temperature +/- 20°C.
7) Under below mentioned temperature at turbine outlet and pressure
according above mentioned reference conditions.
8) Tolerance of the pumps delivery capacities must be considered by the
manufactures.
MAN Diesel
45
38
1
50
7
8
2,450
2,800
720
368
421
784
903
200
224
329
376
81
93
58
58
58
58
92
92
24.8
28.1
58
58
53
55
14,924
17,056
6.67
6.67
4.01
26,247
30,135
31,944
36,508
16.8
19.2
388
388
1,000
1,143
< 30
58
58
58
58
92
92
1.73
1.98
0.83
0.95
1.73
1.98
3.3
3.8
4.09
Page 2 of 3
9
3,150
473
1,022
247
423
104
58
58
92
31.4
58
56
19,188
6.67
33,699
41,071
21.6
388
1,285
58
58
92
2.23
1.07
2.23
4.3
198 82 841.0
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