A gas within a piston–cylinder assembly undergoes a thermodynamic cycle consisting of three processes: Process 1–2: Constant volume V1 = 1 m3, p1 = 1 bar, to p2 = 3 bar, U2 − U1 = 400 kJ. Process 2–3: Constant pressure expansion to V3 = 2 m3. Process 3–1: Adiabatic compression, with W31 = −1120 kJ. There are no significant changes in kinetic or potential energy. Determine the net work for the cycle, in kJ, and the heat transfers for Processes 1–2 and 2–3, in kJ. Is this a power cycle or refrigeration cycle? Explain.