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Modélisation de la fraction solide des coulis d'hydrates de CO2 et CO2-THF utilisée comme fluide frigoporteur.

Solid fraction modelling for CO2 and CO2-THF hydrate slurries used as secondary refrigerants.

Auteurs : MARINHAS S., DELAHAYE A., FOURNAISON L.

Type d'article : Article, Article de la RIF

Résumé

In the paper, the suitability of hydrate slurries in secondary refrigeration was investigated by the means of a new hydrate solid-fraction model. Considering the high melting enthalpy of CO2-containing hydrates, slurries presenting high hydrate solid fractions can carry sufficient latent heat to be useful for a two-phase secondary-refrigerant application. The model presented in this paper allowed to calculate the solid fraction of CO2 and CO2-THF hydrate from thermodynamic conditions of pressure and temperature. Contrary to a previous work on single CO2 hydrates in a closed system, the present model can take into account hydrate mixture and is well adapted to additional CO2 injections (opened system). By relying on the hydrate-conversion model results, the study of hydrates in suspension in a carrying liquid was also studied in an experimental loop and was based on a formation process by CO2 injection in a cooled aqueous solution.

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Pages : 758-766

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Détails

  • Titre original : Solid fraction modelling for CO2 and CO2-THF hydrate slurries used as secondary refrigerants.
  • Identifiant de la fiche : 2007-1605
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 5
  • Date d'édition : 08/2007

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