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Document IIF

Étude préliminaire du film d’eau saturée (R-718) en ébullition dans un évaporateur à plaques rainurées.

Preliminary study of saturated water (R-718) film boiling in a grooved plate evaporator.

Numéro : 0621

Auteurs : GIRAUD F., COLLIGNON R., MAREK J., STUTZ B.

Résumé

Since it is a natural and ecological fluid with high latent heat of vaporization and high heat capacity, water (R-718) could be a good candidate to develop durable solution and replace non-environmentally friendly fluids currently used as refrigerant. However, due to several drawbacks, like the high wall superheat required to onset the boiling in these systems, evaporators currently used in water systems are mainly of falling film type. In order to allow compact design of these latter, a grooved plate falling film heat exchanger has been tested. To take advantage of boiling events observed and allow a deeper understanding of this phenomenon, a preliminary study is conducted. Boiling events observed in a saturated liquid film and in working conditions representative to those obtained in water refrigeration systems are identified and characterized using high speed imaging. The bubbles flow velocities are estimated and phenomena observed discussed.

Documents disponibles

Format PDF

Pages : 9 p.

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 : Preliminary study of saturated water (R-718) film boiling in a grooved plate evaporator.
  • Identifiant de la fiche : 30031640
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Date d'édition : 21/08/2023
  • DOI : http://dx.doi.org/10.18462/iir.icr.2023.0621

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