MAN Diesel 4.08
Page 3 of 3
MAN Diesel
198 82 828.0MAN B&W 80-26MC/MC-C/ME/ME-C/ME-B/-GI-TII engines
Fig. 4.08.02b: List of capacities for L23/30H, 900 rpm, IMO Tier II
1) Tolerance: +10% for rating coolers, - 15% for heat recovery
2) LT cooling water flow parallel through 1 stage charge air cooler and
through lube oil cooler and HT cooling water flow only through water
jacket and cylinder head, water temperature outlet engine regulated by
thermostat
3) Basic values for layout of the coolers
4) Under above mentioned reference conditions
5) Tolerance: quantity +/- 5%, temperature +/- 20°C
6) Under below mentioned temperature at turbine outlet and pressure
according above mentioned reference conditions
7) Tolerance of the pumps delivery capacities must be considered by the
manufactures
8) To compensate for built on pumps, ambient condition, calorific value
and adequate circulations flow. The ISO fuel oil consumption is multi-
plied by 1.45.
6-8L23/30H: 160 kW/Cyl., 900 rpm
Reference Condition: Tropic
Air temperature
LT-water temperature inlet engine (from system)
Air pressure
Relative humidity
°C
°C
bar
%
45
36
1
50
Temperature basis
Setpoint HT cooling water engine outlet
Setpoint Lube oil inlet engine
°C
°C
82°C (engine equipped with HT thermostatic valve)
60°C (SAE30), 66°C (SAE40)
Number of Cylinders
-
6 7 8
Engine output
Speed
kW
rpm
960 1,120 1,280
900
Heat to be dissipated
1)
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
kW
kW
kW
kW
kW
244 285 326
- 1 stage cooler: no HT-stage -
369 428 487
117 137 158
32 37 43
Air data
Temperature of charge air at charge air cooler outlet, max.
Air flow rate
Charge air pressure
Air required to dissipate heat radiation (engine) (t
2
-t
1
=10°C)
°C
m
3
/h
4)
kg/kWh
bar
m
3
/h
55 55 55
6,725 7,845 8,966
7,67 7,67 7,67
3.1
10,369 11,989 13,933
Exhaust gas data
5)
Volume flow (temperature turbocharger outlet)
Mass flow
Temperature at turbine outlet
Heat content (190°C)
Permissible exhaust back pressure
m
3
/h
6)
t/h
°C
kW
mbar
13,970 16,299 18,627
7.6 8.8 10.1
371 371 371
410 479 547
< 30
Pumps
a) Engine driven pumps
Fuel oil feed pump (5.5-7.5 bar)
HT cooling water pump (1-2.5 bar)
LT cooling water pump (1-2.5 bar)
Lube oil (3-5 bar)
b) External pumps
7)
Diesel oil pump (4 bar at fuel oil inlet A1)
Fuel oil supply pump (4 bar discharge pressur)
Fuel oil circulating pump (8 bar at fuel oil inlet A1)
m
3
/h
m
3
/h
m
3
/h
m
3
/h
m
3
/h
m
3
/h
m
3
/h
1.3
45
69
20 20 20
0.68 0.79 0.90
0.33 0.38 0.44
0.68 0.79 0.90
Cooling water pumps for for "Internal Cooling Water System 1"
+ LT cooling water pump (1-2.5 bar) m
3
/h 52 61 70
Cooling water pumps for for "Internal Cooling Water System 2"
HT cooling water pump (1-2.5 bar)
+ LT cooling water pump (1-2.5 bar)
Lube oil pump (3-5 bar)
m
3
/h
m
3
/h
m
3
/h
30 35 40
52 61 70
17 18 19
Starting air system
Air consuption per start Nm
3
2.0 2.0 2.0
Nozzle cooling data
Nozzle cooling data m
3
/h 0.66
L23/30H-Tll GenSet Data
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