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In this paper,a back propagation artificial neural network(BP-ANN)model is presented for the simulta-neous estimation of vapour liquid equilibria(VLE)of four binary systems viz chlorodifluoromethan-carbondioxide, trifluoromethan-carbondioxide,carbondisulfied-trifluoromethan and carbondisulfied-chlorodifluoromethan.VLE data of the systems were taken from the literature for wide ranges of temperature(222.04—343.23K)and pressure (0.105 to 7.46MPa).BP-ANN trained by the Levenberg-Marquardt algorithm in the MATLAB neural network toolbox was used for building and optimizing the model.It is shown that the established model could estimate the VLE with satisfactory precision and accuracy for the four systems with the root mean square error in the range of 0.054—0.119.Predictions using BP-ANN were compared with the conventional Redlich-Kwang-Soave(RKS) equation of state,suggesting that BP-ANN has better ability in estimation as compared with the RKS equation(the root mean square error in the range of 0.115—0.1546).
In this paper, a back propagation artificial neural network (BP-ANN) model is presented for the simulta-neous estimation of vapor liquid equilibria (VLE) of four binary systems viz chlorodifluoromethan-carbondioxide, trifluoromethan- carbondioxide, carbondisulfied-trifluoromethan and carbondisulfied- BP-ANN trained by the Levenberg-Marquardt algorithm in the literature for wide ranges of temperature (222.04-343.23K) and pressure (0.105 to 7.46 MPa) .BP-ANN trained by the Levenberg-Marquardt algorithm in the MATLAB neural network toolbox was used for building and optimizing the model. It is shown that the established model could estimate the VLE with satisfactory precision and accuracy for the four systems with the root mean square error in the range of 0.054-0.119. Predictions using BP-ANN were compared with the conventional redlich-Kwang-Soave (RKS) equation of state, suggesting that BP-ANN has better ability in estimation as compared with the RKS equation (the root mean square error in the range of 0.115-0.1546).