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Viscosité et coefficient de diffusion massique des mélanges ammoniac/nitrate d’éthylammonium.

Viscosity and mass diffusion coefficient of ammonia/ethylammonium nitrate mixtures.

Numéro : 2058

Auteurs : RIVES R., SALAVERA D., CORONAS A.

Résumé

Ethylammonium nitrate shows an enhanced ammonia solubility due to the formation of strong hydrogen bonds. This protic ionic liquid also shows negligible vapour pressure and shares many properties with water. These attractive features make it interesting to study the mixtures of ethylammonium nitrate with ammonia for absorption refrigeration systems. This paper reports new experimental data for viscosity and mass diffusion coefficient in ammonia/ethylammonium nitrate mixtures. Measurements were performed using a piston-type viscometer for viscosity, and Optical Digital Interferometry for diffusion coefficients. Viscosity measurements were performed at temperatures between 293.15 K and 353.15 K, over a wide concentration range. Diffusion measurements of ammonia in the ionic liquid were performed at 293.15 K and 303.15 K. Viscosity data and the mass diffusion process were described using a semi-empirical correlation and a non-equilibrium model, respectively. The models show an acceptable deviation from experimental data.

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Pages : 8

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    20 €

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Détails

  • Titre original : Viscosity and mass diffusion coefficient of ammonia/ethylammonium nitrate mixtures.
  • Identifiant de la fiche : 30028928
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 6th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
  • Date d'édition : 01/09/2021
  • DOI : http://dx.doi.org/10.18462/iir.TPTPR.2021.2058
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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