DDBSP: UNIFAC Calculation Software DDBSP-UNIFAC is a low-cost stand-alone package that allows to estimate activity coefficients, excess enthalpies and excess heat capacities using UNIFAC and mod. UNIFAC for systems with up to 50 components. It contains UNIFAC and mod. UNIFAC group fragmentations as well as the latest published UNIFAC and mod. UNIFAC parameters. For members of the, a much larger and improved set of parameters is available. The following figure shows the main dialog of the program. Dortmund Data Bank Explorer Version 2015 Introduction The free DDB Explorer Version 2015 is a demo of the DDB and the DDB software package. Based on data for 30 components (see table below) and their appropriate mixtures, the user could get a picture of the efficiency of our powerful products. Not only utilities to display, print, copy, and plot the several thousand data sets with experimental pure component and mixture data are included in the Explorer Version. Data can also be estimated, regressed and predicted. The Artist program contains a multitude of methods published in current literature and can be used for the estimation of pure component properties like critical data or normal boiling points. Besides the regression of g E model parameters for NRTL, Wilson and UNIQUAC, group contribution methods like UNIFAC and mod. UNIFAC (Do) as well as the group contribution equations of state VTPR and PSRK can be applied to predict the phase equilibrium behavior of the different mixtures.
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