MAN Diesel 4.07
Page 3 of 3
MAN Diesel
198 42 066.4MAN B&W 80 → 26 MC/MCC, 80 → 50 ME/MEC, 70
→ 60 MEGI, 50 → 35 MEB
L21/31 GenSet Data
Fig. 4.07.02a: List of capacities for L21/31, 1,000 rpm
Cyl. 5 6 7 8 9
Maximum continuous rating at 1000 rpm
kW ,000 ,320 ,540 ,760 ,980
Engine-driven pumps:
LT cooling water pump (-2.5 bar) m³/h 6 6 6 6 6
HT cooling water pump (-2.5 bar) m³/h 6 6 6 6 6
Lubricating oil pump (3-5 bar) m³/h 34 34 46 46 46
External pumps:
Max. delivery pressure of cooling water pumps bar 2.5 2.5 2.5 2.5 2.5
Diesel oil pump (5 bar at fuel oil inlet A) m³/h 0.69 0.92 .08 .23 .38
Fuel oil supply pump (4 bar discharge pressure) m³/h 0.34 0.45 0.53 0.60 0.68
Fuel oil circulating pump (8 bar at fuel oil inlet A) m³/h 0.70 0.93 .09 .25 .40
Cooling capacities:
Lubricating oil kW 206 62 92 222 252
LT charge air kW 25 333 388 443 499
Total LT system kW 33 495 580 665 75
LT ow at 36°C inlet and 44°C outlet* m³/h 35.5 47.8 52. 56.2 60.5
Jacket cooling kW 63 280 332 383 435
HT charge air kW 22 36 4 460 509
Total HT system kW 374 64 743 843 944
HT ow at 44°C inlet and 80°C outlet* m³/h 8.9 20.9 23.9 26.7 29.5
Total from engine kW 705 36 323 508 695
LT ow from engine at 36°C inlet m³/h 35.5 47.2 5.5 55.6 59.9
LT outlet temperature from engine at 36°C inlet °C 53 57 59 60 6
(-string cooling water system)
Gas data:
Exhaust gas ow kg/h 6,920 0,200 ,900 3,600 5,300
Exhaust gas temperature at turbine outlet °C 335 333 333 333 333
Maximum allowable back pressure bar 0.025 0.025 0.025 0.025 0.025
Air consumption kg/h 6,720 9,940 ,600 3,200 4,900
Starting air system:
Air consumption per start incl. air for jet assist Nm³ .0 .2 .4 .6 .8
Heat radiation:
Engine kW 2 47 50 54 56
Alternator kW ( See separate data from alternator maker )
The stated heat balances are based on 00% load and tropical
condition.
The mass ows and exhaust gas temperature are based on ISO
ambient condition.
* The outlet temperature of the HT water is xed to 80°C, and
44°C for the LT water.
At different inlet temperature the ow will change accordingly.
Example: If the inlet temperature is 25°C then the LT ow will
change to (44-36)/(44-25)*00 = 42% of the original ow.
The HT ow will not change.
17856 53-3.0
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