Air contains
water in an extremely fine distribution - as water vapor. During compression and
cooling of air some of this water will separate from the air. This applies to
the compression and cooling of the charge air by the turbocharger and charge
air cooler and it applies to the behavior of compressed air in air cylinders.
The volume increases
▪ with increasing
air temperature,
▪ with increasing
air humidity,
▪ as the charge air
pressure increases and
▪ as the charge air
temperature falls.
After the charge
air cooler, i.e. in the charge air pipe, 1.000 kg of water per hour may be
produced under certain circumstances. This is due to the great volumes of air
and the relatively high charge air pressures. At tropical temperatures the
effect is even greater.
Therefore, it is
important, that condensate drain always operates properly to minimize the
condensed water quantity in the engine.
The amount of
water produced in compressed air cylinders is much less. For air cylinders with
4 m³ volume this amount hardly ever exceeds 5 kg per charge.
Source: MAN
Thank you for sharing this information. The charge air cooler is located between the turbo charger and the engine scavenge air inlet manifold. The purpose of the charge air cooler is to reduce the air inlet temperature thereby increasing air density thus giving an increase in engine efficiency.
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