Five kilograms of water (H2O) sealed in a piston-cylinder device undergoes 3 quasi-equilibrium processes that complete a cycle. The initial pressure and temperature are 80 bar (8000 kPa) and 400 oC (673 K). Changes in
kinetic and potential energy are negligible.
Given: Atmospheric pressure is 100 kPa.
Process 1 2 is constant volume
Process 2 3 is constant pressure of 10 bar (1000 kPa)
to a temperature of 100 oC (373 k).
Process 3 1 produces work of 3W1 = 900 kJ or 3w1 = W/m 180 kJ/kg
Find properties & the cycle work and heat transfer input, WCYCLE and QIN (kJ).