Water Dew Point 1

[AA1344]

Is Antoine equation (to predict water vapor pressure at different temperatures) valid below water triple point (0`deg c or 32 deg F)?
How to predict the water dew point of gas streams, when the operating temperature of the stream is below 0 deg C (say in cryogenic plants)?

 

[PaoloPemi]

use a suitable EOS (i.e. mixing rules for polar compounds as water) and multiphase flash.