Consider a Carnot cycle for water in a piston-cylinder device. The mass of the water is 1.5 kg. During the isothermal expansion the water is heated from a quality of 0.2 at a pressure of 25 bar to the saturated vapor state. The vapor then expands adiabatically to a pressure of 0.9 bar and a quality of 0.8.
a) Sketch the P-v diagram for this cycle
b) Evaluate the heat and work for each process (kJ)
c) Evaluate the thermal efficiency