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Une étude expérimentale de la désorption de frigorigène à partir d'un mélange frigorigène-huile soumis à une dépressurisation rapide.

An experimental study of refrigerant desorption from a refrigerant-oil mixture subjected to rapid depressurization.

Numéro : pap. 1140

Auteurs : FORTKAMP F. P., BARBOSA J. R. Jr, MARCELINO NETO M. A.

Résumé

This paper deals with the experimental assessment of refrigerant desorption leading to foam formation in R134a/POE oil mixtures undergoing controlled depressurization. An experimental apparatus was designed and constructed to allow measurements of pressure drop rate, foam height and refrigerant gas mass flux resulting from decompression and desorption from a saturated liquid mixture. High-speed video recording of the phenomenon enabled the identification of three main periods during the depressurization/foaming process, namely, depressurization without cavitation, vapor flashing and rapid foam growth, and foam layer decay. The experimental results for the maximum foam height, foam lifetime and liquid supersaturation during desorption were explored as a function of the overall initial refrigerant mass fraction and physical properties of the liquid phase.

Documents disponibles

Format PDF

Pages : 9 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

Détails

  • Titre original : An experimental study of refrigerant desorption from a refrigerant-oil mixture subjected to rapid depressurization.
  • Identifiant de la fiche : 30007537
  • Langues : Anglais
  • Source : 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
  • Date d'édition : 16/07/2012

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