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Performance du flux thermique critique pour l'ébullition libre de R134a dans un tube lisse vertical avec chauffage uniforme et à tubes nervurés.

Critical heat flux performance for flow boiling of R134a in vertical uniformly heated smooth tube and rifled tubes.

Auteurs : KIM C. H., BANG I. C., CHANG S. H.

Type d'article : Article

Résumé

In the paper, critical heat flux (CHF) experiments for flow boiling of R134a were performed to investigate the CHF characteristics of four-head and six-head rifled tubes in comparison with a smooth tube. Both of rifled tubes having different head geometry have the maximum inner diameter of 17.04 mm while the smooth tube has the average inner diameter of 17.04 mm. The experiments were conducted for the vertical orientation under outlet pressures of 13, 16.5, and 23.9 bars, mass fluxes of 285-1300 kg/m2s and inlet subcooling temperatures of 5-40 °C in the R134a CHF test loop.

Détails

  • Titre original : Critical heat flux performance for flow boiling of R134a in vertical uniformly heated smooth tube and rifled tubes.
  • Identifiant de la fiche : 2006-0124
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 48 - n. 14
  • Date d'édition : 07/2005

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