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Mesurage et modélisation du transfert de chaleur dans un réacteur agité discontinu à double paroi, appliqués à l’étude cinétique de la formation d’hydrates de CO2.

Heat transfer measurement and modelling in a jacketed batch stirred reactor applied to CO2 hydrate formation kinetic study.

Numéro : 0278

Auteurs : OSSWALD V., CLAIN P., NDOYE S., DELAHAYE A., FOURNAISON L.

Résumé

CO2 hydrate slurry is a promising fluid containing phase change material for secondary refrigeration cold distribution issues due to its high latent heat (about 500 kJ.kg-1 of water, higher than that of ice – 333 kJ.kg-1) and having a wide melting temperature range suitable for air conditioning application. The thermodynamic properties of CO2 hydrates are now well established. Nevertheless, knowledge of crystallization kinetics phenomena is still a challenge. The goal here is to promote the rate of CO2 hydrate formation to increase the energy density of the CO2-hydrate-based system.
The present work investigates the kinetics of CO2 hydrate crystallization for different types of stirrers in a jacketed stirred batch reactor by heat transfer measurement. The mass fraction of crystallized hydrate was determined directly from the heat balance on the cooling jacket, with a specific differential thermal direct measurement. This heat balance's kinetic approach is compared with a classical mass balance approach based on pressure and temperature measurements and suitable CO2 concentration and hydrate composition assumptions.

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Pages : 10 p.

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Détails

  • Titre original : Heat transfer measurement and modelling in a jacketed batch stirred reactor applied to CO2 hydrate formation kinetic study.
  • Identifiant de la fiche : 30031596
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Date d'édition : 21/08/2023
  • DOI : http://dx.doi.org/10.18462/iir.icr.2023.0278

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