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Corrélation pour le transfert de chaleur par écoulement en ébullition des frigorigènes à basse pression à l’intérieur d’un tube lisse horizontal.

Correlation for flow boiling heat transfer of low-pressure refrigerants inside a horizontal smooth tube.

Numéro : 2396

Auteurs : LIU Y., JIGE D., INOUE N.

Résumé

The flow boiling heat transfer of low-pressure refrigerants including R1224yd(Z), R1233zd(E), R1336mzz(Z), and R1336mzz(E) was experimentally investigated inside a horizontal smooth tube with outer and inner diameters of 9.52 and 8.40 mm, respectively. The experiments were conducted at a mass velocity range of 50–300 kgm−2s−1 and a saturation temperature of 40 °C. In the forced convection region, where the vapor shear force was dominant, the measured heat transfer coefficients were slightly larger than those of the conventional refrigerants were. A modified heat transfer correlation was developed based on a wettability separation angle to differentiate the stratified and annular flows. In addition, the heat transfer coefficient after the onset of dryout vapor quality was studied. Within the entire database, the mean deviation of the modified correlation was 1.0 %. The developed correlation agreed better with the experimental results compared to the conventional correlations.

Documents disponibles

Format PDF

Pages : 10

Disponible

  • 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 : Correlation for flow boiling heat transfer of low-pressure refrigerants inside a horizontal smooth tube.
  • Identifiant de la fiche : 30028473
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 05/2021
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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