Wet Steam - Specific Volume
The droplets of water in wet steam occupies negligible space in the steam and the specific volume of wet steam will be reduced according the dryness fraction:
v = vs ζ (1)
where
v= specific volume of wet steam (m3/kg, ft3/lb)
vs = specific volume of the dry steam (m3/kg, ft3/lb)
ζ = dryness fraction
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