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R-410A en écoulement diphasique à l'intérieur de microcanaux lisses : chute de pression.

Two-phase pressure drop of R-410A in horizontal smooth minichannels.

Auteurs : CHOI K. I., PAMITRAN A. S., OH C. Y., et al.

Type d'article : Article, Article de la RIF

Résumé

Convective boiling pressure drop experiments were performed in horizontal minichannels with a binary mixture refrigerant, R-410A. The test section was made of stainless steel tubes with inner diameters of 1.5 and 3.0 mm and with lengths of 1500 and 3000 mm, respectively. This test section was uniformly heated by applying electric current directly to the tubes. Experiments were performed at inlet saturation temperature of 10°C, mass flux ranges from 300 to 600 kg/m2.s and heat flux ranges from 10 to 40 kW/m2. The current study showed the significant effect of mass flux and tube diameter on pressure drop. The experimental results were compared against 15 two-phase pressure drop prediction methods. The homogeneous model predicted well the experimental pressure drop, generally. A new pressure drop prediction method based on the Lockhart-Martinelli method was developed with 4.02% mean deviation.

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Format PDF

Pages : 119-129

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Détails

  • Titre original : Two-phase pressure drop of R-410A in horizontal smooth minichannels.
  • Identifiant de la fiche : 2008-0526
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 31 - n. 1
  • Date d'édition : 01/2008

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