Air with a mass of 0.5 kg, contained inside a piston-cylinder device with an initial pressure of 5 bar and initial volume of 0.1 m3, undergoes a thermodynamic cycle consisting of 3 processes as follows:
Process 1-2: 100 kJ of heat is added to the device in an isobaric manner during which the internal energy increases by 20 kJ
Process 2-3: Air cools at constant volume and internal energy decreases by 50 kJ
Process 3-1: Compression of air via a poly tropic process (PV1.3=constant)
a) Draw the cycle on a P-V diagram
b) What is the pressure (in bar) and volume (in m3) at state’s 2 and 3?
c) Find the heat transfer (in kJ) and work (in kJ) and internal energy change (in kJ) for each process in the cycle
d) What is the heat transfer (in kJ) and net work (in kJ) for this cycle?