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Document IIF

Mesure de la tension de surface d'un mélange huile/frigorigène par la méthode de la pression maximale des bulles.

Surface tension measurement of oil/refrigerant mixture by maximum bubble pressure method.

Auteurs : FUKUTA M., SUMIYAMA J., MOTOZAWA M., et al.

Type d'article : Article, Article de la RIF

Résumé

Lubrication oil used in refrigerant compressors forms oil mist in the compressor shell. Some of the oil mist is discharged into a refrigeration cycle with refrigerant and causes degradation of heat transfer in heat exchangers. Since the generation of the oil mist is related to the Weber number, it is necessary to measure the surface tension of the oil/refrigerant mixture before discussing the oil mist generation in the compressor. In this study, the maximum bubble pressure method was adapted to measure the surface tension of PAG (polyalkylene glycol) oil/CO2 mixture. The density of the mixture needed for the measurement was also carried out. It was found that the surface tension of PAG/CO2 mixture sharply decreases with an increase in the concentration of the refrigerant in the mixture. The surface tension of the mixture under 10?MPa and 100?°C is estimated to be 14.6 mN m-1 by an extrapolation.

Documents disponibles

Format PDF

Pages : 125-133

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 : Surface tension measurement of oil/refrigerant mixture by maximum bubble pressure method.
  • Identifiant de la fiche : 30019838
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 73
  • Date d'édition : 01/2017

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