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Déshumidification de l'air à l'aide d'un déshydratant liquide chimique dans une colonne avec garnissage, et son efficacité en termes de transfert de chaleur et de masse.

Dehumidification of air by chemical liquid desiccant in a packed column and its heat and mass transfer effectiveness.

Auteurs : ELSARRAG E.

Type d'article : Article

Résumé

The pressure drop, carryover, leak, and corrosion in traditional desiccant dehumidification towers are of serious concern in real applications, especially when using triethylene glycol as a desiccant. In this study the cellulose rigid media pads are used as the packing for its low pressure drop. A special coated material is used to prevent corrosion and leakage problems. The packing arrangement minimized solution carryover. The alternative method that can be used to predict the dehumidifier outlet conditions is the effectiveness method. Theoretical and experimental studies of the simultaneous heat and mass transfer to evaluate the effectiveness of the packed dehumidifier are conducted. The model predictions are compared with very good agreement. Through the experimental study of the dehumidifier, important design variables that affect the effectiveness are defined and compared with correlations reported by previous studies. The previous correlations are assessed and the errors are reported.

Détails

  • Titre original : Dehumidification of air by chemical liquid desiccant in a packed column and its heat and mass transfer effectiveness.
  • Identifiant de la fiche : 2006-1391
  • Langues : Anglais
  • Source : HVAC&R Research - vol. 12 - n. 1
  • Date d'édition : 01/2006

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