Partager

Document IIF

Évaporation d'ammoniac dans un échangeur à plaques à chevrons avec et sans huile miscible.

Ammonia evaporation in a mixed configuration chevron plate heat exchanger with and without miscible oil.

Auteurs : KHAN T. S., KHAN M. S., CHYU M. C., et al.

Type d'article : Article, Article de la RIF

Résumé

An experimental study was conducted to determine the effects of miscible lubricant oil on evaporation of ammonia in a vertical chevron plate heat exchanger. The heat exchanger was configured in a U-type counter flow arrangement with mixed (30°/60°) chevron plate configuration. Experiments were carried out for four saturation temperatures ranging from -25 °C to -2 °C for a fixed ammonia mass flux rate of 6.5 kg m-2 s-1 and over a range of heat flux levels resulting in a vapor quality at the heat exchanger exit ranging between 0.5 and 0.9. For a given saturation temperature, experiments were performed for 0%, 3%, 6% and 9% oil concentrations, by volume in ammonia. The oil concentration, exit vapor quality, heat flux and saturation temperature were found to have significant effects on the heat transfer coefficient and pressure drop of ammonia. Based on the experimental data, correlations to estimate two phase Nusselt number and friction factor, generalized for the whole range of oil concentration have been presented.

Documents disponibles

Format PDF

Pages : 120-134

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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

Détails

  • Titre original : Ammonia evaporation in a mixed configuration chevron plate heat exchanger with and without miscible oil.
  • Identifiant de la fiche : 30013518
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 51
  • Date d'édition : 03/2015

Liens


Voir d'autres articles du même numéro (17)
Voir la source

Indexation