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Información tecnológica

On-line version ISSN 0718-0764

Abstract

GUERRERO, Mónica P; TOSELLI, Luis A  and  VALDERRAMA, José O. Correlation of Vegetable Oil and Beef Tallow Properties Using Padé Approximants. Inf. tecnol. [online]. 2008, vol.19, n.4, pp.19-24. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642008000400004.

Padé approximants have been used to correlate some properties needed in the modeling and design of shell and tube heat exchangers used in the production of vegetables oils, beef tallow and biodiesel. Padé approximants are rational functions that have the capacity of representing complex functions with a reduce number of parameters. The properties considered were density, specific heat, viscosity and thermal conductivity of these substances and model parameters were determined using experimental data from the literature. The proposed general Padé model shows to be adequate to estimate the properties studied, obtaining deviations similar or lower than those of other highly non-linear models.

Keywords : Padé approximants; vegetable oils; beef tallow; biodiesel.

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