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Document IIF

Caractéristiques de l'écoulement et du transfert de chaleur des coulis de glace à l'intérieur d'un tube hélicoïdal.

Flow and heat transfer characteristics of ice slurries in a helically coiled pipe.

Numéro : pap. O41

Auteurs : HARUKI N., HORIBE A., MOURI M.

Résumé

Recently, ice slurry has attracted much attention in order to save the energy of air conditioning device. The helically coiled pipes are used on the supposition of a heat exchanger in a dynamic-type ice thermal storage system. In this study, flow and heat transfer characteristics of ice slurry in some helically coiled pipes have been investigated. The flow visualization, pressure loss and heat transfer coefficient of ice slurry were measured as a function of ice packing factor (IPF), flow velocity, heat flux and coil radius. It was found that the flow resistance of ice slurry in a helically coiled pipe is influenced with the interaction between the friction force effect of the ice particles and the turbulent increase due to the secondary flow. The heat transfer coefficient of ice slurry in a helically coiled pipe increases with increasing the melting ratio of the ice particles except that all ice particles are melted. And useful correlations for predicting the flow resistance and heat transfer coefficient of the ice slurry were proposed in terms of some non-dimensional parameters.

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Pages : 8 p.

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Détails

Titre original : Flow and heat transfer characteristics of ice slurries in a helically coiled pipe.
Identifiant de la fiche : 30004999
Langues : Anglais
Source : 10^thInternational Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: Kobe, Japan, July 29-August 1, 2012.
Date d'édition : 01/07/2012

Liens

Voir d'autres communications du même compte rendu (46)
Voir le compte rendu de la conférence

Indexation

Thèmes : Mesures thermodynamiques;
Evaporateurs, condenseurs et autres échangeurs thermiques;
Transfert de chaleur;
Transfert de masse;
Stockage d'énergie thermique;
Frigoporteurs diphasiques (MCP, coulis de glace…)
Mots-clés : Coulis de glace; Frottement; Tube hélicoïdal; Transfert de chaleur; Matériau; Écoulement; Changement de phase