A piston-cylinder contains 40 kg water of which 20 kg is saturated liquid. The equilibrium pressure of the system is 100 kPa.
a) Find the system initial volume
b) The water undergoes an isothermal expansion until the pressure reaches 10 kPa. Find the change in the system volume, delta V, in cubic meters, assuming that the process temperature is 100 degrees Celsius.
c) Calculate how much energy must be added to the system, delta H in kJ, for the expansion
d) After the expansion, the water undergoes an isobaric compression until V3=V1. Find the quality at the final equilibrium state
e) Draw a process on a P-v diagram for water below and show temperature and specific volume values at the equilibrium states in the table next to the graph