A furnace operating at 500 K supplies heat and cooling water at 300 K removes wa

Question

A furnace operating at 500 K supplies heat and cooling water at 300 K removes waste heat to the power cycle shown below. The flow rate around the cycle is 100 mol/s. What is the Carnot efficiency of a cycle operating between the same temperatures? How much heat is supplied to the cycle? How much waste heat is generated? How much work is produced by the cycle? Give your answers in kW. What is the efficiency of the cycle? What is the total change in entropy of the universe associated with this cycle?

Explanation / Answer

carnot efficiency = (1 -(300/500)) = 0.4

heat supplied = 10*500*0.1 KW = 500 KW

work generated = (1/2)*10*200*0.1 KW = 100 KW

heat wasted = 500 - 100 KW = 400 KW

efficiency = 100/500 = 20%

total change in entropy of the universe = 0

as carnot cycle is a reversible process

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.