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Document IIF

Étude expérimentale du transfert de chaleur d'un coulis de glace à base de monopropylène glycol (MPG) en écoulements laminaires.

Experimental study of heat transfer of ice slurry based on MPG in laminar flows.

Numéro : 1938

Auteurs : MELLARI S.

Résumé

This paper presents the experimental results of transfer heat of ice slurry in the distribution phase in order to store fruits and vegetables at positive cold rooms (+2 °C/+4 °C). The required energy power absorbed during the exchange between the ice slurry and the air is assimilated to the transport capacity (in kW of cooling at full melt off). The secondary fluid was prepared by mixing Monopropylen glycol, MPG, and water to obtain an initial concentration varying from 5 % to 24% (initial freezing temperature varying from -1.84 °C to –9.39 °C). The result showed the heat transfer coefficients for ice slurry in laminar flow conditions increase with velocity and ice concentration and decrease with increasing MPG concentration. The heat transfer coefficients of ice slurry are of the order of 7000 Wm-2K-1. Moreover, a new Nusselt correlation was proposed that accurately predicts the superficial heat transfer coefficients of laminar flow of ice slurry in horizontal pipe.

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Pages : 8

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Détails

  • Titre original : Experimental study of heat transfer of ice slurry based on MPG in laminar flows.
  • Identifiant de la fiche : 30028845
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 13rd IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: (online) Vicenza, Italy, September 1-3, 2021.
  • Date d'édition : 01/09/2021
  • DOI : http://dx.doi.org/10.18462/iir.PCM.2021.1938
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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