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Document IIF

Transfert de chaleur et chute de pression dans les régions d'écoulement laminaire et transitoires à l'intérieur de tubes horizontaux à rainures horizontales de faible diamètre.

Single-phase heat transfer and pressure drop in laminar and transition flow regions inside internally helical-grooved horizontal small-diameter tubes.

Numéro : pap. ID: 633

Auteurs : ICHINOSE J., INOUE N.

Résumé

An experimental study of heat transfer and pressure drop in single-phase laminar and transition flow inside internally helical-grooved small-diameter tubes were carried out using 10 types of tubes and a smooth small-diameter tube with an outside diameter of 4.00 mm. In the experiments, water was used as a test fluid; the inlet temperature was maintained at a constant 20°C and the flow rate was varied from 0.001 to 0.047 kg/s. Correlations to predict the friction factor were developed based upon the measured data, which can predict the experimental data within ±20%. In addition, we compared the experimental data with two heat transfer correlations in the laminar flow region. The effect of the shape of the groove in an internally grooved small-diameter tube upon heat transfer and pressure drop in laminar and transition flow regions was clarified.

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Pages : 8 p.

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Détails

  • Titre original : Single-phase heat transfer and pressure drop in laminar and transition flow regions inside internally helical-grooved horizontal small-diameter tubes.
  • Identifiant de la fiche : 30002234
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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