Abstract
This paper presents to identifies of co current plate heat exchanger model HE158C using Microsoft Excel Software (MES) and Laplace Transform to obtain its transfer function in s-domain. The simulation is then done by using MATLAB M-file in order to see its step output response. The process modelling in this method are draw graph of data input and output, get the mathematical equation from graph, obtain the transfer function and then simulate with MATLAB. This method gave 4th order of the transfer function. From the simulation, it shows that an exponential infinite pattern of step output response. This is because of the co current plate heat exchanger is nonlinear. The advantage of this paper is prepared data simulation if a system identification method such as linear model structures (ARX, ARMAX, Output Error, and General Polynomial models), nonlinear model structures (NLARX and NLOE models), and nonlinear model structures based on neural networks (NNARX and NNARMAX models) will use in identification of the co current plate heat exchanger model HE158C.
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