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Modélisation du transfert transitoire de masse et de chaleur dans un déshumidificateur à déshydratant solide et à lit tassé à plusieurs plateaux : analyse paramétrique.

Transient mass and heat transport modeling in a multi-tray packed bed solid desiccant dehumidifier: A parametric analysis.

Auteurs : ABD-ELHADY M. M., EL-SHARKAWY I. I., HAMED A. M., SALEM M. S.

Type d'article : Article de la RIF

Résumé

Using desiccant dehumidification technology, it is possible to dry the air before it reaches a climate-controlled area. Additionally, the development of theoretical models is crucial to understanding the intrinsic processes of this technology due to the interdependent physics involved in transport, adsorption, and heating dynamics. This study develops a computer model to better explain transient mass and heat transport in a multi-tray packed bed solid desiccant dehumidifier (MPBDD). A two-dimensional (2D) model that considers the conservation of mass, momentum, and heat is built. A Linear Driving Force (LDF) model is used in the study to theoretically characterize the moisture adsorption properties of the solid desiccant (Silica gel). Also, Saha, Boelman and Kashiwagi (S-B-K) equation has been applied to calculate the equilibrium water concentration. The model's validity is evaluated by contrasting theoretical predictions with experimental findings also testing with a different published article. To explore how the dehumidification system behaves under various operating situations and parameter variations, a parametric analysis was conducted. The system inlet temperature, inlet relative humidity, and bed length are among the analyzed variables. It was discovered that the highest performance was achieved with an input velocity of 0.4 m.sec−1, relative humidity of 54 %, and bed length of 0.15 m.

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Format PDF

Pages : 109-117

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Transient mass and heat transport modeling in a multi-tray packed bed solid desiccant dehumidifier: A parametric analysis.
  • Identifiant de la fiche : 30032091
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 157
  • Date d'édition : 01/2024
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2023.10.019

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