Real Time Temperature Control of Shell and Tube Heat Exchanger

The various process parameters in industries are required to be monitored & controlled like temperature, flow, pressure and level. Main focus here is to control & monitoring temperature as it is widely used parameter. Heat exchanger is the simplest unit for transfer of thermal energy. The main purpose of a heat exchanger system is to transfer heat from a hot fluid to a cooler fluid, so temperature control of outlet fluid is of prime importance. The main aim of the proposed PID controllers is to control the temperature of the outgoing fluid (water) to a desired level in the minimum possible time irrespective of disturbances rejection. Shell and tube heat exchanger is used as test bench to verify performance of PID controller algorithm. PLC S7 300 is used to monitor & Control real time data using a sensor thermocouple. PID control algorithm is implemented in a PLC and performance against set point response and load disturbance is studied.