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Gas within a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three… 1 answer below »

gas within a piston–cylinder assembly undergoes a thermodynamic cycle consisting of three processes in series, beginning at state 1 where
m =0.5 kg,
p
1 = 1 bar,
V
1 = 1.5 m
3, as follows:

Process 1–2: Compression with
pV = constant,
W
12 =-104 kJ,
u
1 = 424 kJ/kg,
u
2 = 780 kJ/kg.

Process 2–3:
W
23 = 0,
Q
23 = -150 kJ.

Process 3–1:
W
31 =48 kJ.

There are no changes in kinetic or potential energy. Determine
Q
12 and
Q
31, each in kJ.

 

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