Partager

Document IIF

Mesures des propriétés électriques des frigorigènes et des mélanges frigorigène / huile.

Measurement of electrical properties of refrigerants and refrigerant-oil mixtures.

Numéro : pap. ID: 525

Auteurs : FEJA S., LEUPOLT H., MÜLLER Y.

Résumé

The paper deals with the description of a new pressure proof device developed at ILK Dresden for measuring electrical properties of refrigerants, oils and refrigerant-oil mixtures under pressure. The determination can be performed based on DIN EN 60247. This standard is valid for the determination of the relative permittivity, the dielectric dissipation factor and the direct current (DC) resistivity of isolating fluids at atmospheric pressure. The measurements can be made in a temperature range from -30°C to 90°C at pressures up to 80 bar under dry atmospheric conditions. The sensitivity of the method as well as its considerable flexibility meets the requirements of the industrial and commercial refrigeration. Challenges regarding the development and performance of the measuring cell as well as some preliminary experimental results will be presented. The focus of the experiments is on environmentally friendly refrigerants (GWP < 150) such as R744, R1234yf and R152a, and their mixtures with lubricants.

Documents disponibles

Format PDF

Pages : 6 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 : Measurement of electrical properties of refrigerants and refrigerant-oil mixtures.
  • Identifiant de la fiche : 30002025
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

Liens


Voir d'autres communications du même compte rendu (569)
Voir le compte rendu de la conférence

Indexation