(Solution) - The air in the constant pressure cylinder of Fig 6 37 is -(2025 Original AI-Free Solution)

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The air in the constant-pressure cylinder of Fig. 6.37 is initially at 400 8 C and 120 kPa. It is cooled until its temperature is 40 8 C. The surroundings are at 20 8 C. The entropy generated during this process is nearest:
(A) 0.463 kJ/kg ? K
(B) 0.591 kJ/kg ? K
(C) 0.766 kJ/kg ? K
(D) 1.229 kJ/kg ? K
Figure 6.37