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Equations pour prévoir la chute de pression d'évaporation à l'intérieur de tubes horizontaux lisses et rainurés.

[In Japanese. / En japonais.]

Auteurs : KUBOTA A., UCHIDA M., SHIKAZONO N.

Type d'article : Article

Résumé

These tubes had an outer diameter of 7 mm, and the working fluids were R407C and R410A. The previous and present experimental data were correlated by the Lockhart-Martinelli method. Different numerical constants were adopted for smooth and grooved tubes to calculate the Lockhart-Martinelli pressure parameter. In order to express the gravitational effect, a damping function was introduced. The proposed damping function was expressed as a function of the Froude number for both smooth and grooved tubes. 95% of the predicted results are within the accuracy of plus or minus 30% for both smooth and grooved tubes.

Détails

  • Titre original : [In Japanese. / En japonais.]
  • Identifiant de la fiche : 2002-2263
  • Langues : Japonais
  • Source : Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 18 - n. 4
  • Date d'édition : 2001
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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