About What is the appropriate temperature for the generator air inlet
If the engine room temperature exceeds 40°C (104°F), the generator must be derated per the generator derate schedule and cool outside air must be ducted directly to the generator air intake.
If the engine room temperature exceeds 40°C (104°F), the generator must be derated per the generator derate schedule and cool outside air must be ducted directly to the generator air intake.
engine room temperature at an appropriate level is to protect various components from excessive temperatures. Items that require cool air are: • Electrical and electronic components. • Cool air to the air cleaner inlet. • Cool air to the torsional vibration damper. • Habitable temperatures for the engine operator or service personnel.
air temperature typically between 40C° (104F°) and 50C° (122F°). It is important to ensure that the ambient air capability is adequate for the site as operating above the rated ambient air capability may result in engine overheating, leading to a shutdown.
generator sets or generator sets in an enclosure, this temperature is typically measured at the air inlet louver. The air flowing through the radiator, then, is significantly warmer than the air entering the system. In other words, the actual air on core temperature is higher than the cooling system temperature rating.
It's certainly possible to build generators capable of operating at 55°C ambient, but they are de-rated versions of much larger sets. Over-sized radiators / fin-fan banks mounted externally to the generator room, and a howling gale of cooling air through the engine enclosure to handle the heat rejection from the engine itself.
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6 FAQs about [What is the appropriate temperature for the generator air inlet ]
What is a good air temp for a generator?
For a generator, the internal inlet air temperature is typically 35-40 degrees Celsius higher than the ambient temperature. This is known as the Overdesign Temperature Rise (ODP). The generator does not require any de-rating for single-wall applications with typical cooling water temperatures of 32 degrees Celsius.
How much incoming air does a generator need?
A generator typically needs 35-40% over-sizing of the incoming air based on the internal generator inlet air temperature being ambient + 20 degrees Celsius. For typical 32 degrees Celsius water, there is no de-rate for single-wall application. The generator requires this amount of air for cooling purposes. For example, for every kilowatt of loss, the required flow is 1 gallon per minute.
What if the engine room temperature exceeds 40°C?
If the engine room temperature exceeds 40°C (104°F), the generator must be derated per the generator derate schedule and cool outside air must be ducted directly to the generator air intake. Alternatively, custom generators can be sized to handle specific ambient conditions.
Does a generator intake need cool air?
It is important to note that cooling air is needed for more than just the engine; the generator intake also requires cool clean air. The most effective way to do this is to provide a ventilation air source low to the ground at the rear of the package.
Does a generator need ventilation?
Large generators, configured with an air inlet positioned high on the generator, will require an additional source of ventilation air. If Ventilation Type 1 or Type 2 is not feasible, an alternative is Type 3; however, this routing configuration will require approximately 50% more airflow than Type 1.
What temperature should an engine room/enclosure be?
In all cases, engine room/enclosure design must ensure that air temperature around the engine will not exceed 50°C (122°F). Critical locations include the engine torsional damper and generator coupling. Air temperature reading should be taken no more than 6 inches away from these components.