Abstract: Shell and Tube Heat Exchanger (STHX) is widely used in process industries to withstand higher pressures. Modeling the STHX system is a one of the important task in process control industries and the FOPDT model for the same is obtained by First principles. The development of the model is necessary to study the behavior of the system and to design the suitable controller. The First principles model is developed using the Energy Balance equation of the STHX system and the data collected from the model is used to identify the process. In this work, the cold water flow rate is taken as manipulated variable whereas the hot water outlet temperature is considered as the controlled variable. The aim of this paper is to identify the model of the system based on the observed input-output data. The Nonlinear ARX model, Box-Jenkins model and Output-Error model are obtained from the collected data. Box-Jenkins and Output-Error model originates from linear model identification techniques and Nonlinear ARX model is from nonlinear model identification techniques. The above said models are validated and compared on the basis of Percentage of Fitness, Final Prediction Error (FPE) and Cost Function.
Keywords: STHX, FOPDT, Nonlinear ARX, Box-Jenkins, Output-Error, Percentage of Fitness, FPE, Cost Function.
Title: MODELING OF SHELL AND TUBE HEAT EXCHANGER USING SYSTEM IDENTIFICATION TECHNIQUES
Author: S.Abirami, S.Sivagamasundari
International Journal of Interdisciplinary Research and Innovations
ISSN 2348-1218 (print), ISSN 2348-1226 (online)
Research Publish Journals
