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Problem 15.10: Liquid octane (C8H18) enters a steady-flow combustion chamber at 25°C and 1 atm at...

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Mechanical Engineering

Problem 15.10: Liquid octane (C8H18) enters a steady-flowcombustion chamber at 25°C and 1 atm at a rate of 0.35 kg/min. Itis burned with 50 percent excess air that also enters at 25°C and 1atm. After combustion, the products are allowed to cool to 25°C.Assuming complete combustion and that all the H2O in the productsis in liquid form, determine (a) the heat transfer rate from thecombustion chamber, (b) the entropy generation rate, and (c) theexergy destruction rate. Assume that T0 = 298 K and the productsleave the combustion chamber at 1 atm pressure.

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