The Identification of Open Loop Recording Curve on Heat Exchanger to Determine PID Control Parameters and Eliminate Overshot Occurrence

The changes in heat exchanger characteristics due to dirt sediment and the effect of corrosion on the conduction pipe can cause difficulty to control the system properly. To anticipate sudden changes in heat exchanger characteristics, this study then tried to identify the open loop recording curve on the heat exchanger in the form of a temperature curve and create a PID controller simulation program. The identification method used in this work was the C.L. Smith method. The simulation test results indicated that some changes in the process variables have occurred following the set point. In this case, the simulation often found some overshoot phenomena which would bring negative impact. In order to avoid the impact, the occurrence of overshoot must be reduced or eliminated.