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Determining # of phases given two variables

  1. Apr 7, 2010 #1
    I cannot determine how to figure out how many phases of H20 are present using steam tables given two variables. I have five tables from my old thermodynamics class that are for the following:

    Saturated Water: Temperature table
    Saturated Water: Pressure table
    Saturated Water: Solid-vapor
    Superheated Water Vapor
    Subcooled Liquid Water

    How would I be able to determine how many phases are present give, say, a specific volume of 3 (m^3/kg) at 70 deg celsius? The book doesn't have any examples of how to do so...
  2. jcsd
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