Engineering Board Exam Reviewer · Thermodynamics · hard
1000 kJ of heat is transferred directly from a reservoir at 600 K to a reservoir at 300 K. What is the total entropy generated?
- 1.667 kJ/K
- 3.333 kJ/K
- 5.000 kJ/K
- 0.000 kJ/K
Answer
A. 1.667 kJ/K
Solution
ΔShot = -1000/600 = -1.667; ΔScold = +1000/300 = 3.333. Sgen = 1.667 kJ/K (> 0, irreversible).
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