WÄRTSILÄ VASA 6L32, Инструкция по эксплуатации

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Condensation in charge air coolers
Example: If the ambient air temperature is 35°C and the relative
humidity is 80 % the water content in the air can be read from the
diagram (0.029 kg water/kg dry air). If the air manifold pressure
(receiver pressure) under these conditions is 2.5 bar, i.e. absolute
air pressure in the air manifold is abt. 3.5 bar (ambient pressure
+ air manifold pressure), the dew point will be 55°C ( from diag.).
If the air temperature in the air manifold is only 45°C, the air can
only contain 0.018 kg/kg (from diag.). The difference, 0.011 kg/kg
(0.029-0.018) will appear as condensed water.
60
50
40
30
20
10
0
10
20
30
40
50
60
70
.01 .02 .03 .04 .05 .06 .07 .08 .09
Water content
Water dewpoint ˚
C
(kg water/kg dry air)
Amb air temperature ˚
C
P=Air manifold pressure
bar abs
P=4,5
P=2,5
P=3,5
P=1,5
f=40
f=60
f=80
f=100
f=Relative humidity %
Fig 03-2
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03 Start, Stop and Operation 32-200402-04
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