Forming MixturesA gas mixture required in an industrial

Chapter 12, Problem 39P

(choose chapter or problem)

A gas mixture required in an industrial process is Prepared by first allowing carbon monoxide (CO) at \(80^{\circ} \mathrm{F}, 18 \mathrm{lbf} / \text { in. }^{2}\) to enter an insulated mixing chamber operating at steady state and mix with argon (Ar) entering at \(380^{\circ} \mathrm{F}, 18 \mathrm{lbf} / \text { in. }^{2}\) The mixture exits the chamber at \(140^{\circ} \mathrm{F}, 18 \mathrm{lbf} / \text { in. }^{2}\) and is then allowed to expand in a throttling process through a valve to \(14.7 \mathrm{lbf} / \mathrm{in} .^{2}\) Determine

(a) the mass and molar analyses of the mixture.

(b) the temperature of the mixture at the exit of the valve, in \({ }^{\circ} \mathrm{F}\).

(c) the rates of exergy destruction for the mixing chamber and the valve, each in Btu per lb of mixture, for \(T_{0}=40^{\circ} \mathrm{F}\)

Kinetic and potential energy effects can be ignored.