MAN Diesel 4.07
Page 3 of 3
MAN Diesel
198 42 066.5MAN B&W S80MC/MC-C/ME-C, K80MC-C/ME-C, S70MC/MC-C/ME-C/ME-GI,
L70MC-C/ME-C, S65ME-C/ME-GI, S60MC/MC-C/ME-C/ME-GI/ME-B,
L60MC-C/ME-C, S50MC/MC-C/ME-C/ME-B, S46MC-C/ME-B, S42MC,
S40MC-C/ME-B, S35MC/MC-C/ME-B, L35MC, S26MC
L21/31 GenSet Data
Fig. 4.07.02a: List of capacities for L21/31, 1,000 rpm, IMO Tier I. Tier II values available on request.
Cyl. 5 6 7 8 9
Maximum continuous rating at 1000 rpm
kW 1,000 1,320 1,540 1,760 1,980
Engine-driven pumps:
LT cooling water pump (1-2.5 bar) m³/h 61 61 61 61 61
HT cooling water pump (1-2.5 bar) m³/h 61 61 61 61 61
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 A1) m³/h 0.69 0.92 1.08 1.23 1.38
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 A1) m³/h 0.70 0.93 1.09 1.25 1.40
Cooling capacities:
Lubricating oil kW 206 162 192 222 252
LT charge air kW 125 333 388 443 499
Total LT system kW 331 495 580 665 751
LT flow at 36°C inlet and 44°C outlet* m³/h 35.5 47.8 52.1 56.2 60.5
Jacket cooling kW 163 280 332 383 435
HT charge air kW 212 361 411 460 509
Total HT system kW 374 641 743 843 944
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 1136 1323 1508 1695
LT flow from engine at 36°C inlet m³/h 35.5 47.2 51.5 55.6 59.9
LT outlet temperature from engine at 36°C inlet °C 53 57 59 60 61
(1-string cooling water system)
Gas data:
Exhaust gas flow kg/h 6,920 10,200 11,900 13,600 15,300
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 11,600 13,200 14,900
Starting air system:
Air consumption per start incl. air for jet assist Nm³ 1.0 1.2 1.4 1.6 1.8
Heat radiation:
Engine kW 21 47 50 54 56
Alternator kW ( See separate data from alternator maker )
The stated heat balances are based on 100% load and tropical
condition.
The mass flows and exhaust gas temperature are based on ISO
ambient condition.
* The outlet temperature of the HT water is 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 is 25°C then the LT flow will
change to (44-36)/(44-25)*100 = 42% of the original flow.
The HT flow will not change.
17856 53-3.0
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