Partager

Flux critique de R-407C dans un écoulement ascendant dans un tube vertical.

Critical heat flux of R-407C in upflow boiling in a vertical pipe.

Auteurs : SINDHUJA R., BALAKRISHNAN A. R., SRINIVASA MURTHY S.

Type d'article : Article

Résumé

The critical heat flux (CHF) in forced convective upflow has been investigated in a uniformly heated vertical tube of 12.7 mm internal diameter and 3 m length for different reduced pressures ranging from 0.32 to 0.98, with non-azeotropic ternary refrigerant mixture R-407C as the working fluid. The onset of CHF was determined by the sudden rise in the wall temperature of the electrically heated tube. Experiments were performed over a wide range of parameters: mass flux values from 200 to 2000 kg/m2.s, pressure from 15 to 45.6 bars and heat flux from 5 to 80 kW/m2. The results show considerably lower critical heat flux at higher pressures as in the case of pure fluids. Finally, a comparison of the experimental data with the available pure fluid correlations has been performed. [Reprinted with permission from Elsevier. Copyright, 2007].

Détails

  • Titre original : Critical heat flux of R-407C in upflow boiling in a vertical pipe.
  • Identifiant de la fiche : 2008-1544
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 28 - n. 8-9
  • Date d'édition : 06/2008

Liens


Voir d'autres articles du même numéro (3)
Voir la source

Indexation