 
 Example 9.5
 The pressure is 3.973000 MPa
 The total mass of mixture is 9.573293 kg
 Specific volume is 0.004178 m3/kg
 Enthalpy is is 1188.134056 kJ/kg
 The entropy is 2.989134 kJ/kg K
 The internal energy is 1171.533708 kJ/kg
 At 250 degree Celsius, internal energy is 1171.534455kJ/kg 