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Document IIF

Optimisation de la mouillabilité de la surface des ailettes pour favoriser l'élimination de la poussière dans les échangeurs de chaleur dans des conditions de givrage-dégivrage.

Optimization of fin surface wettability for promoting the dust removal in heat exchangers under frosting-defrosting conditions.

Auteurs : ZHUANG D., YANG Y., DING G., et al.

Type d'article : Article, Article de la RIF

Résumé

Dust removal by frosting-defrosting is a novel way to keep the cleanness of heat exchangers of air conditioners during long-term operation, and the effect depends on the fin surface wettability. The purpose of this study is to obtain the optimal choice of fin surface wettability for dust removal by testing dust removal characteristics on various surfaces, covering bare aluminum surface, bare copper surface, hydrophilic surface and hydrophobic surface. The temperatures of the air dry-bulb, air wet-bulb, the frosting surface and the defrosting surface in the experiments are 7?°C, 6?°C, -15?°C and 5?°C, respectively. The results show that, the hydrophobic surface has the best dust removal effectiveness; the remnant dust rates on the surfaces are 28.4%, 28.0%, 8.69% and 0.54% for bare aluminum plate, bare copper plate, hydrophilic copper plate and hydrophobic copper plate, respectively; the dust removal time on hydrophobic surface is much less than that on the other ones.

Documents disponibles

Format PDF

Pages : 143-153

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 : Optimization of fin surface wettability for promoting the dust removal in heat exchangers under frosting-defrosting conditions.
  • Identifiant de la fiche : 30027179
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 109
  • Date d'édition : 01/2020
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.10.010

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