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Document IIF

Conception d'un échangeur de chaleur à lit fluidisé pour la production de coulis d'hydrate de CO2.

Design of a fluidized bed heat exchanger for CO2 hydrate slurry production.

Numéro : pap. n. TP-091

Auteurs : ZHOU H., INFANTE FERREIRA C.

Résumé

CO2 hydrate slurry is a newly developed secondary cooling fluid. In order to use CO2 hydrate as a direct coolant of fresh products, a new CO2 hydrate slurry production system (a fluidized bed heat exchanger, FBHE) is under construction and it has been optimized for the expected operating conditions. A sensitivity analysis has been used to identify the optimum design for the specific operating conditions. The model includes the growth of CO2 hydrate on the fluidized bed wall as a function of the operating conditions. The heat of formation is removed by a falling film of evaporating R134a outside the fluidized bed. The maximum capacity of the set-up is 5 kW. The parameters optimized include the internal diameter of the fluidized bed heat exchanger, bed porosity, inert particles inside the FBHE, as well as the refrigerant temperature. Under specific operating conditions: pressure inside the FBHE is 35 bars and solution initial temperature is 6°C, the optimized parameters according to simulation are: internal diameter is 85 mm, bed porosity is 0.7, particle diameter is 5 mm, and refrigerant temperature is 0°C. Under these conditions the apparatus produces 13.2 kg hydrate in one hour.

Documents disponibles

Format PDF

Pages : 9 p.

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    20 €

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    Gratuit

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Détails

  • Titre original : Design of a fluidized bed heat exchanger for CO2 hydrate slurry production.
  • Identifiant de la fiche : 30008316
  • Langues : Anglais
  • Source : 4th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
  • Date d'édition : 17/06/2013

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