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

Author(s) : MARINHAS S., DELAHAYE A., FOURNAISON L.

Type of article: Article, IJR article

Summary

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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Details

  • Original title: Solid fraction modelling for CO2 and CO2-THF hydrate slurries used as secondary refrigerants.
  • Record ID : 2007-1605
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 5
  • Publication date: 2007/08

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