Temperature profile modelling, simulation and validation for a counter flow water tube in tube heat exchanger

The present work gives an insight and visualization of temperature gradient behavior along the length of a cross flow water tube in tube heat exchanger with mathematical modelling. Various process operational disturbance is given to understand the steady state and dynamic behavior. Discrete modelling is done by considering number of zones along the length of heat exchanger for the study of temperature profile. Simulation is carried out in MATLAB/SIMULINK and validation is done using CFD (Computational Fluid Dynamics) with Gambit/Fluent for steady state and dynamic analysis of temperature gradient under same condition. Control strategy is also developed with PID in MATLAB/SIMULINK to maintain the Cold fluid outlet temperature which is validated with practical results with marginal difference.