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Document IIF

Étude d'un échangeur de chaleur et de masse à ailettes à micro-picots en serpentin pour les systèmes à absorption.

Investigation of a serpentine micro-pin fin heat and mass exchanger for absorption systems.

Auteurs : HOYSALL D. C., GARIMELLA S.

Type d'article : Article, Article de la RIF

Résumé

An investigation of a heat and mass exchanger with micro-pin fins in serpentine passages for vapor absorption systems is presented. A serpentine micro-pin fin absorber sheet with a pin fin diameter of 350 µm and height of 406 µm is used. Visualization of the two-phase mixture flowing through the micro-feature component, and an investigation of the heat and mass transfer mechanisms over a range of temperatures, pressures, concentrations and flow rates are conducted. A model for the absorption of ammonia into a dilute ammonia-water solution in the geometry is developed based on insights from flow visualization results, and validated by comparing its predictions with heat transfer measurements. A computational fluid dynamics study of flow through the serpentine micro-pin fin passages is also used for additional insights. Liquid-phase mass transfer resistance is found to be the bottleneck to improved rates of vapor absorption in these absorbers.

Documents disponibles

Format PDF

Pages : 108-121

Disponible

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    20 €

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Détails

  • Titre original : Investigation of a serpentine micro-pin fin heat and mass exchanger for absorption systems.
  • Identifiant de la fiche : 30024675
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 93
  • Date d'édition : 09/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.07.012

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