To process this page used the WaterSteamPro function "wspUSTX": specific internal energy in double-phase area [J/kg] as function of temperature t [K], vapor fraction x [-].
Function uses functions wspUSST and wspUSWT which return specific internal energies of steam and water at saturation line. The function uses following formula: Ux = (1 - X)·Uw + X·Us, where Us = wspUSST, Uw = wspUSWT and X - vapor fraction. The range of validity is double-phase (water-vapor) area.
WaterSteamPro is a registered trademark of Moscow Power Engineering Institute (Technical University).
Copyright (c) MPEI (TU), 1999-2010.
Copyright (c) Konstantin A. Orlov, 1999-2010.