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MAN Diesel 4.07
L21/31 GenSet Data
Fig. 4.07.02a: L<strong>is</strong>t of capacities for L21/31, 900 rpm
MAN B&W 80 → 26 MC/MC�C, 80 → 50 ME/ME�C, 70
→ 60 ME�GI, 50 → 35 ME�B
MAN Diesel
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Cyl. 5 6 7 8 9
Maximum continuous rating at 900 rpm kW 950 ,320 ,540 ,760 ,980
Engine-driven pumps:
LT cooling water pump ( -2.5 bar) m³/h 55 55 55 55 55
HT cooling water pump ( -2.5 bar) m³/h 55 55 55 55 55
Lubricating oil pump (3-5 bar) m³/h 3 3 4 4 4
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 0.65 0.9 .06 .2 .36
Fuel oil supply pump (4 bar d<strong>is</strong>charge pressure) m³/h 0.32 0.44 0.52 0.59 0.67
Fuel oil circulating pump (8 bar at fuel oil inlet A ) m³/h 0.66 0.92 .07 .23 .38
Cooling capacities:
Lubricating oil kW 95 58 89 2 8 247
LT charge air kW 8 3 3 366 4 8 468
Total LT system kW 3 3 47 555 636 7 5
LT flow at 36°C inlet and 44°C outlet* m³/h 27.0 44.0 48. 5 .9 54.0
Jacket cooling kW 54 274 326 376 427
HT charge air kW 20 337 383 429 475
Total HT system kW 355 6 709 805 902
HT flow at 44°C inlet and 80°C outlet* m³/h 8.5 9.8 22.6 25.3 27.9
Total from engine kW 668 082 264 44 6 7
LT flow from engine at 36°C inlet m³/h 27.0 43.5 47.6 5 .3 53.5
LT outlet temperature from engine at 36°C inlet °C 55 58 59 6 63
( -string cooling water system )
Gas data:
Exhaust gas flow kg/h 6,679 9,600 ,200 2,800 4,400
Exhaust gas temperature at turbine outlet °C 335 348 348 348 348
Maximum allowable back pressure bar 0.025 0.025 0.025 0.025 0.025
Air consumption kg/h 6,489 9,330 0,900 2,400 4,000
Starting air system:
Air consumption per start incl. air for jet ass<strong>is</strong>t Nm³ .0 .2 .4 .6 .8
Heat radiation:
Engine kW 49 50 54 58
Alternator kW ( See separate data from alternator maker )
The stated heat balances are based on 00% load and tropical
condition.
The mass flows and exhaust gas temperature are based on ISO
ambient condition.
* The outlet temperature of the HT water <strong>is</strong> fixed to 80°C, and
44°C for the LT water.
At different inlet temperature the flow will change accordingly.
Example: If the inlet temperature <strong>is</strong> 25°C then the LT flow will
change to (44-36)/(44-25)* 00 = 42% of the original flow.
The HT flow will not change.
17856 53-3.0
198 42 06�6.4