WÄRTSILÄ 46F Series, Product Manual

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max. 38°C Fresh water temperature after cooler
15% Margin (heat rate, fouling)
Fig 9-10 Central cooler main dimensions. Example for guidance only
Weight [kg] D [mm] C [mm] A [mm] Engine type
860 2149 1005 690 6L46F
900 2149 1005 690 7L46F
900 2149 1005 690 8L46F
960 2149 1255 690 9L46F
990 2149 1255 690 12V46F
1120 2149 1505 690 14V46F
1120 2149 1505 690 16V46F
9.3.7 Waste heat recovery
The waste heat in the HT cooling water can be used for fresh water production, central heating,
tank heating etc. The system should in such case be provided with a temperature control
valve to avoid unnecessary cooling, as shown in the example diagrams. With this arrangement
the HT water flow through the heat recovery can be increased.
The heat available from HT cooling water is affected by ambient conditions. It should also be
taken into account that the recoverable heat is reduced by circulation to the expansion tank,
radiation from piping and leakages in temperature control valves.
9.3.8 Air venting
Air may be entrained in the system after an overhaul, or a leak may continuously add air or
gas into the system. The engine is equipped with vent pipes to evacuate air from the cooling
water circuits. The vent pipes should be drawn separately to the expansion tank from each
connection on the engine, except for the vent pipes from the charge air cooler on V-engines,
which may be connected to the corresponding line on the opposite cylinder bank.
DAAB605814 9-15
9. Cooling Water System Wärtsilä 46F Product Guide