Experimental and predicted excess molar enthalpies of some working pairs for absorption cycles |
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| Authors: | Raouf Zehioua Christophe Coquelet Chien-Bin Soo Dominique Richon Abdeslam-Hassen Meniai |
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| Affiliation: | aLaboratoire de l’ingénierie des procédés de l’environnement (LIPE), Département de Chimie Industrielle, Université Mentouri Constantine, Route Ain El Bey, Constantine 25017, Algérie;bMINES ParisTech, CEP/TEP - Centre énergétique et procédés, 35 Rue Saint Honoré, 77305 Fontainebleau, France |
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| Abstract: | In this work, the measured excess molar enthalpies of absorption heat pump working pairs (refrigerant + absorbent), viz. water + mono-, di- and tri-ethylene glycol, water + glycerol, and ethanol + di- and tri-ethylene glycol mixtures are presented at 298.15 K and ambient pressure using a Setaram Calvet C80 calorimeter. The experimental results are represented and correlated by a Redlich–Kister type equation. Modeling of the excess enthalpies has been performed using the UNIFAC molecular group-contribution method, and UNIQUAC Gibbs energy model. In addition, the data and results are used to predict the Gibbs energy of all binary systems. This allows a preliminary evaluation of the suitability of the binary systems as heat pump working pairs. |
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| Keywords: | Excess enthalpies C80 calorimeter Redlich– Kister Water Ethanol Glycol Glycerol UNIFAC UNIQUAC Absorption cycles |
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