Partager

Document IIF

Influence de la monocouche fluorée auto-assemblée sur la dynamique de mouillage lors de l’évaporation du mélange frigorigène-huile sur une surface métallique.

Influence of fluorinated self-assembled monolayer on wetting dynamics during evaporation of refrigerant–oil mixture on metal surface.

Auteurs : PENG H., LIN L., DING G.

Type d'article : Article, Article de la RIF

Résumé

Reducing wettability of a metal surface is a promising method for enhancing boiling heat transfer of refrigerant–oil mixture on the metal. As fluorinated self-assembled monolayer (F-SAM) coating is effective for wettability reduction, its influence on wetting dynamics including meniscus shape, contact angle, contact line velocity and rising liquid height during evaporation of refrigerant–oil mixture on metal surface were experimentally investigated. The refrigerant–oil mixture was prepared by R141b and NM56, the oil mass fraction ranged from 0 to 10 wt%, and the surface roughness ranged from 0.028 to 1.166 µm. The results show that during evaporation of refrigerant–oil mixture, the presence of F-SAM changes the evaporation mode to be constant contact line velocity followed by both constant contact angle and contact line velocity, while decreases the rising liquid height. The results suggest
that larger surface roughness and higher oil mass fraction are preferred when using F-SAM to reduce surface wettability.

Documents disponibles

Format PDF

Pages : 76-88

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 : Influence of fluorinated self-assembled monolayer on wetting dynamics during evaporation of refrigerant–oil mixture on metal surface.
  • Identifiant de la fiche : 30022338
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 79
  • Date d'édition : 07/2017
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.04.005

Liens


Voir d'autres articles du même numéro (20)
Voir la source

Indexation