rated output can be replaced by 2 times 30 minute engine operation at 70 % of the rated
output. Note that shorter duration than 30 minutes is not recommended.
2.4 Low air temperature
The minimum inlet air temperature of 5°C applies, when the inlet air is taken from the engine
room.
Engines can run in colder conditions at high loads (suction air lower than 5°C) provided that
special provisions are considered to prevent too low HT-water temperature and T/C surge.
For start, idling and low load operations (Ch 2.3), suction air temperature shall be maintained
at 5°C.
If necessary, the preheating arrangement can be designed to heat the running engine (capacity
to be checked).
For further guidelines, see chapter Combustion air system design.
DAAB605814 2-5
2. Operating RangesWärtsilä 46F Product Guide
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