Application of the Second Law Analysis to a Heat Exchanger Working with Ethanol/Water Ice Slurry

Authors : Françoise Strub, Jean Castaing-lasvignottes, Jean-pierre Bédécarrats, Christophe Peuvrel

Pages : 183-188

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Publication Date : 2004-12-01

Article Type : Other

Abstract :The use of ice slurries as secondary refrigerants is a very promising technology. The aim of this paper is to evaluate the contribution of second law analysis to the study of a phase changing secondary refrigerant in cooling systems. The first step of the work presented here consists of two parts: the first involves the calculation of enthalpies and entropies and the second is an entropy/exergy analysis of a heat exchanger. This work attempts to provide a thermodynamic criterion in order to choose the kind of fluid and the inflow conditions that are more suitable for a particular application. It presents the establishment of the method and the results that have been obtained for an ethyl alcohol-water mixture.
Keywords : ice slurry, ethanol-water ice slurry, exergy, binary mixture, second law analysis, specific entropy