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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, 1,000 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 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 d<strong>is</strong>charge 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 flow 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 2 2 36 4 460 509
Total HT system kW 374 64 743 843 944
HT flow 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 flow 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 flow 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 ass<strong>is</strong>t 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 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