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Complex Heat Exchangers Networks Simulation

Julian Castellanos Fernandez
División de Proceso, Instituto Mexicano del Petróleo, México 14, D.F.

Abstract

A mathematical tool for the automatized analysis of complex heat exchangers arrangements is summarized in this paper. Special attention to the actual temperature gradients is given, where a strict mathematical model is solved to produce temperature profiles for the shell and each tube pass. The model is represented by a set of Σ(Ni+1), i=1,m differential equations (Ni = number of passes for the ith equipment, m = number of equipments) plus the corresponding continuity equations for each stream joint or split. A numerical integration method is applied for the solution, coupled with an iterative technique imposed by the class of the system boundaries.

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