Partager

Transfert de chaleur inverse et phénomènes de recondensation dans les tubes capillaires non adiabatiques.

Reverse heat transfer and re-condensation phenomena in non-adiabatic capillary tubes.

Auteurs : BANSAL P. K., YANG C.

Type d'article : Article

Résumé

A numerical simulation model for lateral capillary tube-suction line heat exchangers is presented here to analyse its performance characteristics in small vapour compression refrigeration systems (e.g. domestic refrigerators). Appropriate heat transfer correlations have been used to illustrate the reverse heat transfer and re-condensation phenomena inside the tubes. Some convergence problems were encountered during the execution of the model when lower vapour temperature inside the suction line caused the two-phase refrigerant inside the capillary tube to re-condense within the heat exchange region. Therefore, a relationship between the re-condensation phenomenon and the divergence problem has been analysed in the paper. The modelling was performed with two refrigerants, namely HFC-134a and HC-600a. Further, a simple theoretical equation has been developed to express the re-condensation phenomenon in non-adiabatic capillary tubes.

Détails

  • Titre original : Reverse heat transfer and re-condensation phenomena in non-adiabatic capillary tubes.
  • Identifiant de la fiche : 2006-0721
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 25 - n. 17-18
  • Date d'édition : 12/2005

Liens


Voir d'autres articles du même numéro (18)
Voir la source

Indexation