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Caractéristiques de chute de pression et de transfert de chaleur d'un écoulement monophasique dans des tubes ondulés pour des systèmes de fourniture d'eau chaude.

Pressure drop and heat transfer characteristics of single-phase flow in corrugated tubes for hot-water supply systems.

Numéro : pap. n. 700

Auteurs : KURAYAMA S., WATANABE K., JIGE D., et al.

Résumé

In this study, the pressure drop and heat transfer characteristics of single-phase flow in a smooth tube, a helical-grooved tube, and 12 corrugated tubes with an outer diameter of 12.7 mm were experimentally investigated, employing water as test fluid. Geometrical parameters considered for the corrugated tubes were corrugation depth (0.3, 0.5, and 0.9 mm) and corrugation pitch (4, 6, 8, 12, 15, 20, and 25 mm). Experiments were conducted by maintaining the inlet water temperature at 20°C and varying the flow rate from 0.005 to 0.18 kg/s. The effects of the difference in corrugation pitch and depth on the pressure drop and heat transfer characteristics of single-phase flow in the corrugated tubes were reported. Furthermore, the measured Nusselt numbers of each tested tube were compared under the same conditions of pumping power and a comprehensive evaluation method for heat transfer tubes was described.

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Format PDF

Pages : 8 p.

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    20 €

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    Gratuit

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Détails

  • Titre original : Pressure drop and heat transfer characteristics of single-phase flow in corrugated tubes for hot-water supply systems.
  • Identifiant de la fiche : 30015555
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0700

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