2. Operating speed versus time
Modeling a unit operation in chemical engineering ultimately consists of expressing quantities - material or heat flows, concentrations or temperature, etc. - using functions of either spatial (x, y, z) or discrete (floor number) variables, on the one hand, and of time, on the other. Clearly, the most convenient models are the simplest ones, i.e. those that depend on a minimum number of parameters. In this section, we'll outline the conditions required for a model to be time-independent.
Models based on the flows defined in para-graph 3
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Operating speed versus time
Flow models
Bibliography
Websites
Useful links in Process Engineering
http://ensspicam.u-3mrs.fr/basededonnee.html
French Process Engineering Society (FGP)
http://www.ensic.u-nancy.fr/SFGP/
CNRS Process Engineering Section
http://www.spi-cnrs-dir.fr/
Software
Steady-state processes
Aspen Plus (United States): marketed by Aspen Tech http://www.aspentech.com
This software is equipped with a rich thermodynamic database and includes various additional modules, such as Batchfrac for batch operations and Ratefrac for material transfer kinetics.
PRO/II (United...
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