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Steam Energy Flow

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  • Steam Energy Flow

    Hi,
    I need to calculate the energy flow down a steam line. I have the mass flow, gauge pressure and temperature of the steam and would like an equation/formula to put into the SCADA to work out the Energy flow in the line. There is a variable amount of superheat in the steam so I need to compensate with the temperature. Has anyone got a simple formula to calculate it dynamically?
    The gauge pressure ranges from between 3 and 5 barg and the temperature between 180 and 220C, normal operation conditions 3.5 barg and 205C.
    Thanks in advance

  • #2
    I don't know any simple formulas, and I don't know much about superheated steam.

    I would recommend Revised Release on the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam

    http://www.iapws.org/relguide/IF97-Rev.html

    These guys are the experts, but it is likely to be MUCH more complex than you want. I've only used their model for the saturation curve, and it is complex.

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