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Rebond autopropulsé des gouttes pendant un dégivrage et caractéristiques de drainage de l’eau de fonte de givre sur une surface superhydrophobique inclinée.

Self-propelled drop jumping during defrosting and drainage characteristic of frost melt water from inclined superhydrophobic surface.

Auteurs : LI D., QIAN C., GAO S., et al.

Type d'article : Article, Article de la RIF

Résumé

Drainage behavior of frost melt water from bare, hydrophobic and superhydrophobic surface was experimentally investigated. The self-propelled droplet jumping during defrosting on superhydrophobic surface was captured and the self-drainage characteristic on inclined superhydrophobic surface was observed. In addition, the influence of surface inclined angle on drainage time and surface temperature after complete drainage was analyzed. It is found that the occurrence of spontaneous jumping of defrosted droplet was induced by drop coalescence, which can overcome the surface adhesion, leading to frost melt droplets suspending on superhydrophobic surface. Moreover, the frost melt water can be entirely released with no water droplets retention on superhydrophobic surface at larger than 30° inclined angle, which cannot happen on bare and hydrophobic surface. Furthermore, the surface can keep at low temperature after complete defrosting. The results show that the superhydrophobic surface has an excellent self-drainage capability, which provides possibility for improving defrost efficiency.

Documents disponibles

Format PDF

Pages : 25-38

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 : Self-propelled drop jumping during defrosting and drainage characteristic of frost melt water from inclined superhydrophobic surface.
  • Identifiant de la fiche : 30022348
  • 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.2017.04.022

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