A gaseous mixture of butane (C4H10) and 80% excess air at
Chapter 13, Problem 13.83(choose chapter or problem)
A gaseous mixture of butane (\(\mathrm{C}_{4} \mathrm{H}_{10}\)) and 80% excess air at \(25^{\circ} \mathrm{C}\), 3 atm enters a reactor operating at steady state. Complete combustion occurs and the products exit as a mixture at 1200 K, 3 atm. Refrigerant 134a with a mass flow rate of 5 kg/s enters an outer cooling jacket as saturated liquid and exits the jacket as saturated vapor, each at \(25^{\circ} \mathrm{C}\). No stray heat transfer occurs from the outside of the jacket, and kinetic and potential energy effects are negligible. Determine for the jacketed reactor
(a) the molar flow rate of the fuel, in kmol/s.
(b) the rate of entropy production, in kW/K.
(c) the rate of exergy destruction, in kW, for \(T_{0}=25^{\circ} \mathrm{C}\).
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