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Caractéristiques d'adhérence de la glace dans une solution aqueuse d'urée pour une formation efficace de coulis dans [le stockage de froid].

Adhesion characteristics of ice in urea aqueous solution for efficient slurry formation in cold storage.

Auteurs : ZHAO Y., LI Z., UTAKA Y., et al.

Type d'article : Article, Article de la RIF

Résumé

Ice slurry displays many advantages as a phase-change material for its high energy density and flowability. In typical mechanical scraping method, the strong interaction of ice with solid surface causes the problem of high energy consumption and damage of scrapers. Ice slurry generation process will be efficient if the ice adhesion strength could be reduced. In this paper, urea was proposed as an additive to depress ice adhesion in solutions. Ice particles was scoured easily by liquid flow and ice slurry was generated spontaneously. The thermal transition property, solidification morphology and adhesion characteristic of urea aqueous solutions were investigated respectively. Results show that the latent heat of urea solution was higher than other candidate solutions. Micro liquid film was observed at the solidification–substrate interface when the solution was in solid-liquid two-phase state. This phenomenon explains the lower adhesion strength of ice in aqueous solutions.

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Format PDF

Pages : 335-342

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Détails

  • Titre original : Adhesion characteristics of ice in urea aqueous solution for efficient slurry formation in cold storage.
  • Identifiant de la fiche : 30025641
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 100
  • Date d'édition : 04/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.01.020

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