Liquid octane (C8H18) enters a steady-flow combustion chamber at 25C and 1 atm at a rate of

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Liquid octane (C8H18) enters a steady-flow combustion chamber at 25°C and 1 atm at a rate of 0.25 kg/min. It is burned with 50 percent excess air that also enters at 25°C and 1 atm. After combustion, the products are allowed to cool to 25°C. Assuming complete combustion and that all the H2O in the products is in liquid form, determine
(a) The heat transfer rate from the combustion chamber,
(b) The entropy generation rate, and
(c) The energy destruction rate. Assume that T0 = 298 K and the products leave the combustion chamber at 1 atm pressure.
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Thermodynamics An Engineering Approach

ISBN: 978-0073398174

8th edition

Authors: Yunus A. Cengel, Michael A. Boles

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