Applying the Energy Balance As shown in Fig. P3.85, 0.5 kg of ammonia is containe...

Applying the Energy Balance

As shown in Fig. P3.85, 0.5 kg of ammonia is contained in a piston–cylinder assembly, initially at T₁ = -20°C and a quality of 25%. As the ammonia is slowly heated to a final state, where T₂ = 20°C, p₂ = 0.6 MPa, its pressure varies linearly with specific volume. There are no significant kinetic and potential energy effects. For the ammonia, (a) show the process on a sketch of the p–v diagram and (b) evaluate the work and heat transfer, each in kJ.