Abstract

Various alternative strategies for the control of heat exchangers subject to chemical reaction fouling are simulated, using a numerical technique based on the method of characteristics. The strategies are demonstrated using an experimentally determined local fouling rate model for milk fouling. A performance calculation for four different tubular heat exchangers is presented, showing that the amount of control action required decreases with increasing exchanger area, and that varying the shell-side flow rate does not guarantee control of the exchanger.

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