Question

A mass of one kg of water within a piston–cylinder assembly undergoes a constant-pressure process from saturated vapor at 500 kPa to a temperature of 260°C. Kinetic and potential energy effects are negligible. For the water:

a) Evaluate the work, in kJ,

b) If the work is 30 kJ, evaluate the heat transfer, in kJ,

c) If the heat transfer is negligible, evaluate the entropy production in kJ/K

d) Determine if the process is reversible, irreversible, or impossible.

Answer 1