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Qualification du R134a : données sur les capillaires des installations frigorifiques commerciales.

R134a qualification: industry refrigerator capillary data.

Auteurs : DEVOS R.

Résumé

With the phase-out of R12, the use of R134a and polyolester oil became the preferred refrigerant/oil combination for the refrigerator appliance industry. Reliability data for this refrigerant/oil combination were minimal, and initial testing showed a propensity for the capillary tubes to clog with a variety of contaminants. The paper presents the relationship between capillary tube restriction due to the contaminants and performances. Analysis of the contaminants included a visual description, infrared spectroscopy, scanning electron microscope examination, and measurements of total chlorine content and noncondensable gas content of the refrigerant. Oil samples were measured for moisture level, dissolved iron, and total acid, and an infrared spectral analysis was performed.

Détails

  • Titre original : R134a qualification: industry refrigerator capillary data.
  • Identifiant de la fiche : 1999-0161
  • Langues : Anglais
  • Source : ASHRAE Transactions.1997 Annual Meeting, Boston, MA.
  • Date d'édition : 1997
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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