Consider a steady-flow, ideal Carnot cycle in a closed piston–cylinder device, using steam as the working fluid, in which the high-temperature heat-addition process starts with a saturated liquid and ends with a saturated vapor. The working fluid is at 570 K during the heat-addition process and at 400 K during the heat removal process.

A. Sketch this cycle using T–s coordinates and showing the steam dome.

B. Calculate the quality at the beginning and end of the heat-rejection process.

C. Determine the heat addition and heat rejection per mass of steam (kJ/kg). Also calculate the net work per mass of steam (kJ/kg).

D. Calculate the thermal efficiency for this cycle using the values from part C.