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Méthode de détection de la composition du frigorigène circulant dans un cycle frigorifique utilisant le R407C, un mélange zéotropique ternaire.

[In Japanese. / En japonais.]

Auteurs : SUMIDA Y., OKAZAKI T., UENO Y.

Type d'article : Article

Résumé

A composition sensing circuit (CS circuit) which detects the circulating composition of the ternary zeotropic refrigerant mixture R407C in a refrigeration cycle has been developed. The CS circuit consists of a heat exchanger, a capillary tube, two temperature detectors and one pressure detector. The circulating composition is calculated from the temperature and pressure in the circuit and the vapour-liquid equilibrium for R32/R125. The results indicated that the difference between the calculated and measured composition was within 1% for R32 and R125 and within 2% for R134a in the circulating composition range from 17/20/63 wt% to 29/30/41 wt%. This difference corresponds to less than 0.5 °C in the saturation temperature. This method is therefore applicable to performance stabilization and reliability improvement of the refrigeration cycle with R407C.

Détails

  • Titre original : [In Japanese. / En japonais.]
  • Identifiant de la fiche : 2002-2824
  • Langues : Japonais
  • Source : Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 18 - n. 3
  • Date d'édition : 2001
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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