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Caractéristiques de chute de la pression lors de l'évaporation de R290 et de R404A à l'intérieur d'un tube.

[In Chinese. / En chinois.]

Auteurs : HAN X., NAN X., LIU X., et al.

Type d'article : Article

Résumé

The experimental results of the in-tube evaporation pressure-drop of R290 and R404A in the horizontal smooth tube and the horizontal microfin tube were compared with calculation results by Lockhart & Martinelli pressure-drop correlation, respectively. Moreover, based on the experimental data of R290 and R404A, the Lockhart & Martinelli pressure-drop correlation was modified adequately. For R404A, the correlation shows good agreement with experimental values with mean deviation of -11.52% for the smooth tube and -17.86% for the microfin tube. Lockhart & Martinelli pressure drop correlation can also predict well the in-tube evaporation pressure-drop of R290 for the smooth tube with mean deviation of -21.68%. However, 2.06 to agree well with the experimental data should multiply the predicted value for the microfin tube by Lockhart & Martinelli correlation, and the mean deviation is 2.37%.

Documents disponibles

Format PDF

Pages : 17-20

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  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : [In Chinese. / En chinois.]
  • Identifiant de la fiche : 2006-2845
  • Langues : Chinois
  • Source : Journal of Refrigeration - vol. 27 - n. 108
  • Date d'édition : 04/2006

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