Sketch a pressure-volume diagram for steam and mark on it the following points, labelling clearly the pressure, specific volume and temperature of each point.
P = 20 bar, t = 250°C

t = 212.4°C, u = 0.09957 m3/kg

P = 10 bar, h = 2650 kJ/kg

P = 6 bar, h = 3166 kJ/kg