A Comparative Analysis of Various Control Strategies Implemented on Heat Exchanger System : A Case Study

In this research paper, an intelligent fuzzy PID controller is developed to control the outlet temperature of a shell and tube heat exchanger. The aim of the proposed controller is to regulate the temperature of the outgoing fluid to a desired level in the shortest possible time irrespective of load and process disturbances, equipment saturation and nonlinearity. The fuzzy PID controller provides a satisfactory performance in both steady state and transient state and overcomes the drawbacks of conventional PID controller and feed-forward controller. The developed fuzzy PID controller has demonstrated 84% improvement in the overshoot and 74% improvement in settling time from the classical controller. Also control accuracy is 100% as steady state error becomes zero.