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Recherche visuelle expérimentale sur l’effet de la structure de l’orifice de tuyère sur le processus d’absorption du R124-DMAC dans un tube vertical à bulles.

Visual experimental research on the effect of nozzle orifice structure on r124-DMAC absorption process in a vertical bubble tube.

Auteurs : JIANG M., XU S., WU X., et al.

Type d'article : Article, Article de la RIF

Résumé

A visual experimental platform for R124–DMAC bubble absorption in a vertical tube absorber was designed and built for this research. The bubble behaviors, flow pattern characteristics and distributions are observed and the bubble absorption heights (BAHs) were measured when the two kinds of different structure nozzles (single-orifice or multi-orifice nozzle) were applied in the absorber. The results showed that the BAH will heighten with increases of vapor flow rate and nozzle flow area. Based on visual experimental observations, the BAH or bubble absorption performance was significantly affected by the velocity of vapor from the nozzle rather than by the nozzle structure. The proportion of slug flow in BAH or the BAH can be decreased by using a multi-orifice nozzle in the absorber under the same flow area condition. However, the flow resistance of the vapor through the nozzle will increase, which has a negative action on the performance of absorption refrigeration systems. So, using multi-orifice nozzle does not improve the absorption performance of the bubble absorber under the same nozzle flow resistance condition.

Documents disponibles

Format PDF

Pages : 107-117

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 : Visual experimental research on the effect of nozzle orifice structure on r124-DMAC absorption process in a vertical bubble tube.
  • Identifiant de la fiche : 30018182
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 68
  • Date d'édition : 08/2016

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