Control of Heat Exchanger using Predictive Approach

P. Chalupa, J. Novák, and V. Bobál (Czech Republic)

Keywords

Predictive control, Recursive least squares method, TISO system, Heat exchanger, Realtime control

Abstract

Heat exchange is a classical thermal process which occurs in a wide range of industrial technologies, particularly in the energetic and chemical industry. The paper is focused on a problem of production of liquid (water) with a given temperature course in time. Heating or cooling of inflow water is realized by a heat exchanger which is equipped with heating element and a spiral tube which can serve as a cooling element. The water inside the exchanger can serve as a tank for various chemical or technological operations. The need for tempered water is quite common in many industry branches. From the control point of view, the controlled system is asymmetrical; it has two inputs (cooling and heating) and one output – temperature of water inside the exchanger. A set of predictive controllers were designed to cope with the problem and these controllers were verified and compared by a real time control of Multifunction Process Control Teaching System (MPCTS) – the Armfield PCT 40.

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