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Document IIF

Évaluation expérimentale des performances de mouillage de l’eau sur un substrat de tubes à ailettes en aluminium traité en surface pour l’amélioration des performances des échangeurs de chaleur et de masse.

Experimental wetting performance assessment of water on a surface-treated aluminum fin-tube substrate for performance improvement of heat and mass exchangers.

Numéro : 0182

Auteurs : VARELA R. J., HOSHO T., GIANNETTI N., JEONG J., SAITO K.

Résumé

This study presents the experimental wetting performance and wetting characteristics of water with fluorescent uranine on a plasma-treated aluminum fin-tube substrate in comparison with those of a non-treated one. Static and dynamic contact angles of water on the hydrophilic material were measured and it is found that the static, advancing, and receding contact angles of water on the hydrophilic surface are 2.1, 2.5, and 3.1 times smaller, respectively, than those on the non-treated surface. Wetting visualization experiments were carried out at increasing and decreasing flow rate conditions for Reynolds number ranging from 46.1 to 1386.6. The results show a wetting ratio improvement on the hydrophilic surface by as much as 18.8% at increasing flow condition and 63.5% at decreasing flow condition compared to those on the non-treated one at similar flow rates. Results from this study are useful for performance improvement and minimization of heat and mass exchangers.

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Pages : 7 p.

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    20 €

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Détails

  • Titre original : Experimental wetting performance assessment of water on a surface-treated aluminum fin-tube substrate for performance improvement of heat and mass exchangers.
  • Identifiant de la fiche : 30029766
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
  • Date d'édition : 13/06/2022
  • DOI : http://dx.doi.org/10.18462/iir.gl2022.0182
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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