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Hamiltonian view on process systems
Author(s) -
Hangos Katalin M.,
Bokor József,
Szederkényi Gábor
Publication year - 2001
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690470813
Subject(s) - continuous stirred tank reactor , nonlinear system , control theory (sociology) , bilinear interpolation , simple (philosophy) , heat exchanger , mathematics , thermodynamics , mechanics , computer science , engineering , mechanical engineering , physics , control (management) , philosophy , statistics , epistemology , quantum mechanics , artificial intelligence , chemical engineering
The thermodynamic approach of analyzing structural stability of process plants was extended to construct the simple Hamiltonian model of lumped process systems. This type of model enables us to design a nonlinear PD feedback controller for passivation and loop shaping. This approach is applicable for lumped process systems where Kirchhoff convective transport takes place together with the transfer and sources of various types, and the manipulable input variables are the flow rates. Systems with constant mass holdup and uniform pressure in every balance volume satisfy these conditions. General results are shown by simple examples of practical importance: on a bilinear heat exchanger cell and on an isotherm CSTR with nonlinear reaction.