Calculate the internal energy of 0.3 m3 of steam at 4 bar and 0.95 dryness. If this steam is superheated at constant pressure through 30°C, determine the heat added and change in internal energy
according to the pressure steam table corresponding to 4 bar
hf = 604.65 kJ/kg, uf = 604.22 kJ/kg, ug = 2553.1 kJ/kg.
Specific internal energy of wet steam,