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Simulation par la mécanique numérique des fluides (CFD) et validation expérimentale de l’adsorption de l’éthanol sur un échangeur de chaleur compact à charbon actif.

CFD simulation and experimental validation of ethanol adsorption onto activated carbon packed heat exchanger.

Auteurs : JRIBI S., MIYAZAKI T., SAHA B. B., et al.

Type d'article : Article, Article de la RIF

Résumé

Experimental validation of simulated adsorber/desorber beds for sorption cooling applications is essential to obtain reliable results. We have conducted rigorous simulation of the adsorption process occurring in a finned tube adsorber utilizing 2D-axisymmetric geometry. The adsorber uses activated carbon–ethanol as adsorbent–refrigerant pair. It is cooled with water at nearly 30?°C and experiencing a sharp pressure increase of ethanol from 0.95?kPa initially to 6?kPa. The simulated temperatures at adsorbent thicknesses of 0, 1, 5 and 10?mm from tube outer diameter showed an increase in adsorbent temperature up to 20 °C from its initial temperature. They were slightly higher at start of adsorption and were consistent with experimental data at higher flow time. The validated CFD model will serve as a base for evaluating and optimizing activated carbon–ethanol adsorption cooling cycle. It can be extended also to different adsorber designs and other adsorbent–adsorbate pairs.

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Format PDF

Pages : 343-351

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Détails

  • Titre original : CFD simulation and experimental validation of ethanol adsorption onto activated carbon packed heat exchanger.
  • Identifiant de la fiche : 30020116
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 74
  • Date d'édition : 02/2017

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