Title: Entropy analysis of adiabatic mixing of three streams of different ideal gases at equal pressures and temperatures

Authors: Antun Galovic, Marija Zivic, Severino Krizmanic

Addresses: Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lucica 5, 10000 Zagreb, Croatia. ' Mechanical Engineering Faculty, J.J. Strossmayer University of Osijek, Trg I.B. Mazuranic 2, 35000 Slavonski Brod, Croatia. ' Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lucica 5, 10000 Zagreb, Croatia

Abstract: A non-dimensional analytical solution of entropy generation during adiabatic mixing of three streams of different ideal gases at equal pressures and temperatures is presented. The molar fractions of the three streams are the only relevant variables. The functional dependences of the entropy generation on two variables, i.e., the molar fractions of two gases, are given and the maximum entropy generation is expressed. The results are presented in three- and two-dimensional diagrams. The maximum entropy generation characteristic is shown in a two-dimensional chart. The adiabatic mixing of two different gases is also analysed, as the special case of the above-mentioned general model.

Keywords: adiabatic mixing; entropy generation; ideal gas streams; ideal gases; molar fractions.

DOI: 10.1504/IJEX.2011.039794

International Journal of Exergy, 2011 Vol.8 No.3, pp.325 - 332

Received: 16 Apr 2010
Accepted: 20 Sep 2010
Published online: 20 Apr 2011 *

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