Authors

Control & System Engineering Dept, University of Technology, Baghdad, Iraq.

Abstract

In this paper, we study the Sliding Mode Extremum Seeking (SMES)
optimization method for a Heat Exchangers Network. The studied network is constructed
from plate Heat Exchangers, in which several thermal sources are used to heat a common
cold stream that is distributed between the several branches of the network. The
considered optimization problem is the optimization of the thermal power gained from
different hot sources. The control variables are the split ratios of the cold stream to the
different heat exchangers. The dynamical model for general Heat Exchanger Network
with (n) Heat Exchangers was driven and the special case of two Heat Exchangers in
parallel was considered as a case study. The SMES algorithm was modified with an
integral anti-windup scheme to constrain the search within the admissible region. The
simulation results obtained by using Matlab program confirmed the effectiveness of the
approach.

Keywords