Applying the Energy Balance As shown in Fig. P3.84, 0.5 kg
Chapter 3, Problem 84P(choose chapter or problem)
As shown in Fig. P3.84, \(0.5 \mathrm{~kg}\) of ammonia is contained in a piston-cylinder assembly, initially at \(T_1=-20^{\circ} \mathrm{C}\) and a quality of 25%. As the ammonia is slowly heated to a final state, where \(T_2=20^{\circ} \mathrm{C}, p_2=0.6 \mathrm{MPa}\), 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.
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