101310notes-week-three - physics or economics or...

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!"#$% ’"( )*+ ,- .$$/ #*($$ 0*$ 12#$(324 524267$ 849"(3#*: 1# $raw and fully label a flowchart with all available information 7use a consistent set of units, or change units to insure consistency# 2# Label all unknown stream variables in a consistent set of units 3# ?rocess bookkeeping – degree of freedom analysisB $o we have as many independent equations as we do unknownsD a# Eor non-reactive processes, we can write N material balances per process unit, where N is the number of distinct Hchemical species”. b# Knergy balances – come later c# ?rocess specificationsB relationships between variables dictated by
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Unformatted text preview: physics or economics or regulations on process d# chemical reaction equilibria later e# physical properties density, phase behavior, etc. later f# mathematical constraints sum of mole, mass fractions equals 1. # Mhoose a stream, flow rate, or process unit size as a basis for the calculation if needed if you need extra information after looking at 3. 5# Qrite down and organize mass balance, property and constraint equations in such a way as to simplify the problem R# Solve for all unknowns and write them on the flowchart, check for consistency # Scale the process if necessary...
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This note was uploaded on 12/29/2011 for the course CHE 10 taught by Professor Doyle,f during the Fall '08 term at UCSB.

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