Forming Mixtures
A gas mixture required in an industrial process is prepared by first allowing carbon monoxide (CO) at 80°F, 18 lbf/in.2 to enter an insulated mixing chamber operating at steady state and mix with argon (Ar) entering at 380°F, 18 lbf/in.2 The mixture exits the chamber at 140°F, 16 lbf/in.2 and is then allowed to expand in a throttling process through a valve to 14.7 lbf/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 °F.
(c) the rates of exergy destruction for the mixing chamber and the valve, each in Btu per lb of mixture, for T0 = 40°F.
Kinetic and potential energy effects can be ignored.
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