P-h diagram for superheated steam?

I need to plot a P-h diagram for superheated steam expanding in a nozzle.I know the graph but I need to make sure whether the constant entropy lines are curved or they're straight line.I mean the constant entropy lines of the P-h graph itself not the process.

2 Answers

  • Bomba
    Lv 7
    9 years ago
    Best Answer

    Referring to the Mollier Diagram for steam and to the Keenan and Keyes Temperature /Entropy Chart for Steam I see that there the entropy lines are vertical on both and the constant enthalpy lines are not.

    So, on a P/H diagram the enthalpy lines will be vertical and the entropy lines will be curved.

  • 9 years ago

    they are curved, try seeing graphs of refrigeration cycles. :)

Still have questions? Get your answers by asking now.