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Document IIF

Utilisation de l'énergie des hydrures de gaz dans les procédés frigorifiques.

Use of the energy of gas hydrates in refrigeration processes.

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

Résumé

In the context of the use of hydrates as environment-friendly alternative in two-phase secondary refrigeration, this study investigates CO2 hydrate-ice mixtures using an experimental Differential Thermal Analysis (DTA) device. CO2 hydrate crystals are phase-change materials which can be formed in temperature range corresponding to the operating conditions of secondary refrigeration and air-conditioning systems. Cooling/heating cycles were performed on CO2-water mixtures and a comparison with the DTA results obtained for ice crystallization allowed to estimate a dissociation enthalpy that is one and half higher than that of ice. From experimental and literature data, and improved Clausius-Clapeyron equation, the ice proportions in CO2 hydrate-ice mixtures were determined for various pressure and temperature conditions.

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Détails

  • Titre original : Use of the energy of gas hydrates in refrigeration processes.
  • Identifiant de la fiche : 2006-2938
  • Langues : Anglais
  • Source : Proceedings of the sixth Workshop on Ice Slurries of the IIR/Proceedings of the Second Conference on Phase Change Material and Slurry (PCM 2005).
  • Date d'édition : 15/06/2005

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