Thermodynamics
A gas within a piston–cylinder assembly undergoes a thermodynamic cycle consisting of three processes in series, beginning at state 1 where p1 = 1 bar, V1 = 1.5 m3, as follows:
Process 1-2: Compression with pV = constant, W12 = -104 kJ, U1 = 512 kJ, U2 = 690 kJ
Process 2-3: W23 = 0, Q23 = -150 kJ
Process 3-1: W31 = +50 kJ
There are no changes in kinetic or potential energy. Determine:
(a) Sketch the process on P-V diagram.
(b) Q12, Q31, and U3, each in kJ.
(c) The net work of the cycle, in kJ,
(d) Can this cycle be a power cycle? Explain.