5.2.8. Pressure dew point after removal of pressure


<BR>When compressed air relaxes (pressure released) the pressure dew point drops. The following table is used to determine the new pressure dew point and atmospheric dew point after relaxation:<BR><BR>
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Example 1

Compressed air
      • pabs= 35 bar air pressure
      • Pressure dew point 10°C
relaxed compressed air
      • pabs= 4 bar air pressure
Þ The new pressure dew point is approx. -22°C
Example 2

Compressed air
      • pabs= 7 bar air pressure
      • Pressure dew point 20°C
relaxed compressed air
      • atmospheric air pressure pabs = 1 bar
Þ The atmospheric dew point is approx. -8°C