SciELO - Scientific Electronic Library Online

 
vol.16 issue30Analysis of the influence of signal compression techniques for voice disorder detection through filter-banked based featuresTowards an activity taxonomy (ATx) from separation of concerns in use case modeling author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Revista Ingenierías Universidad de Medellín

Print version ISSN 1692-3324

Abstract

JIMENEZ, Cristian; AMAYA, Iván  and  CORREA, Rodrigo. Calculation and Prediction of Fugacity and Activity Coefficients in Binary Mixtures, using a Self-Regulated Fretwidth Harmony Search Algorithm. Rev. ing. univ. Medellín [online]. 2017, vol.16, n.30, pp.67-96. ISSN 1692-3324.  http://dx.doi.org/10.22395/rium.v16n30a4.

This research article proposes the use of a novel variant of the HS algorithm (harmony search), i.e. SFHS (self-regulated fret width harmony search algorithm), for calculating and predicting fugacity and activity coefficients in binary mixtures. Parameter selection was carried out based on preliminary results with different standard test functions. Different previously reported systems were selected, at 25 ° C and 40 ° C, and at low and moderate pressure levels. Moreover, two solutes were selected: carbon dioxide and ethane. Different solvents, both polar and nonpolar, were selected with comparative purposes. Activity and fugacity coefficients were calculated using the Redlich-Kwong state equation and Lewis rule, along with the sfhs algorithm, assuming both solutes in vapor phase. Consistency of the activity coefficients was analyzed by the Redlich-Kister strategy. Results were very close to those found experimentally by other authors, and most of them did not differ in more than one percentage unit.

Keywords : fugacity coefficient; activity coefficient; binary mixtures; thermodynamic equilibrium; global optimization algorithms..

        · abstract in Spanish     · text in English     · English ( pdf )