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mixture x 2872 Mole x 1767 State Variables x 2332 Homogeneous Nature x 2292 The distillation column shown in the drawing is used to distill a binary mixture. Symbols x, y, and z denote mole fractions of the more volatile component, while B, D, R, and F represent molar flow rates. It is desired to control distillate composition y despite disturbances in feed flow rate F. All flow rates can be measured and manipulated with the exception of F, which can only be measured. A composition analyzer provides measurements of y.
(a) Propose a feedback control method and sketch the schematic diagram.
(b) Suggest a feedforward control method and sketch the schematicdiagram.
If the family of a patient in the intensive care unit submits the individual's living will document, should it be honored immediately or should there be a discussion between physicians and the family? Who should make the decision? Why?
How much water and urea (the main waste product) pass into the dialysate if the entering concentration of urea is 2.30 mg/mL and the exit concentration of urea is 1.70mg/ mL? If the dialyzing fliud flows into the unit at the rate of 1500 mL/ min, wha..
calculate the standard internal energy change for the reaction OF2 (g) + H2O (g) ------- >O2 (g )+ 2HF ( g) at298 ok. the standard enthalpies of formation of OF2, H2O , HF are +20 ,+250 and - 270 kj/mol
Wet steam at 200 °C with 80% moisture is heated by removing 600 kJ/kg of heat. Determine the final state (pressure and temperature and quality, if a two-phase system) if cooling is at constant pressure.
A closed rigid vessel that contains a pure fluid is heated until the contents become saturated liquid. Determine whether the initial state is superheated vapor, compressed liquid, or vapor/liquid.
Calculate the mass of methane that must be burned to provide enough heat to convert 363.0 g of water at 43.0°C into steam at 117.0°C. (Assume that the H2O produced in the combustion reaction is steam rather than liquid water.)
If the feed contains 0.2% argon (from the nitrogen separation process), calculate the purge rate required to hold the argon in the recycle stream below 5.0%. Percentages are by volume.
The March 1979 accident at the Three Mile Island nuclear plant occurred due to a series of operator errors and equipment failures, which reduced the flow of cooling water to the reactor core. As a result, the water began to boil and the core reached ..
Design a column for this separation. The column will operate at essentially atmospheric pressure. Use a reflux ratio 1.5 times the minimum.
Calculate the percentage of solvent in the dried fabric by weight. What is the concentration of solvent in the dryer exhaust (in g/m3) if the exhaust is at 80 degrees C and 1 atm? The solvent has a molecular weight of 86.
Calculate the change in output voltage for a 1658 change in the angle of the knee. Assume that a constant current of 7 mA is supplied to the transducer.
question 1a the radiation protection act 2003 makes provisions for the protection of people against the risks from
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