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Document IIF

Étude expérimentale sur le transfert de chaleur et les caractéristiques d'écoulement de nanofrigorigènes à l'intérieur d'un tube ondulé.

Experimental study on the heat transfer and flow characteristics of nanorefrigerants inside a corrugated tube.

Auteurs : YANG D., SUN B., LI H., et al.

Type d'article : Article, Article de la RIF

Résumé

The heat transfer and flow characteristics of MWCNT-R141b nanorefrigerant with different mass fractions have been studied through experiments. Experimental results were compared with existing correlations. A two-step method was used to prepare the nanorefrigerants. Span-80 was used as surfactant with an average particle diameter of 20 nm. Transmittance method was used to evaluate the stability of nanorefrigerants. Results showed that the stability of MWCNT-R141b nanorefrigerant, which is the added dispersant, was good during the experiments. The 0.3 wt% MWCNT-R141b nanorefrigerants had optimal heat transfer enhancement effects compared with pure refrigerants. The maximum Nusselt number increased by 40%. The specific pressure drop of nanorefrigerant increased as the Reynolds number (Re) increased, and the specific pressure drop of the pure refrigerant was minimum, which is similar to R141b.

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Format PDF

Pages : 213-223

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Détails

  • Titre original : Experimental study on the heat transfer and flow characteristics of nanorefrigerants inside a corrugated tube.
  • Identifiant de la fiche : 30014838
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 56
  • Date d'édition : 08/2015

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