Question

1. The figure below shows a schematic description of a dilution process using a mixer. The mixing tank operates at a constant temperature and its content is assumed to be

well-mixed. The holdup volume of the mixer is V. Stream A is fed at a flowrate of Fo and composition Co to the mixer. Water is fed at a flowrate of Fi to dilute the composition of stream A to a final composition CA in the outlet stream that is flowing at F2. Assuming all streams are incompressible and have the same density, a) Develop expressions for the dynamic (un-steady state) condition of the process. b) Develop an expression for the steady state composition of the outlet. c) Determine the degrees of freedom to control the final composition of the outlet.

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