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Document IIF

Remplacement du R404A à température de condensation élevée par le R454C et le R455A.

Replacement of R404A at high condensation temperature using R454C and R455A.

Numéro : pap. n. 1152

Auteurs : HARO ORTUNO J., MOTA BABILONI A., NAVARRO-ESBRÍ J., et al.

Résumé

This is the 17 slide PowerPoint presentation of Haro, Mota and Navarro's paper which compares the experimental results of a refrigeration system using R404A, R454C and R455A, at condensation temperature of 47°C and evaporating temperatures of -13°C and -30°C.

The experimental results show that, when using the alternative refrigerants instead of R404A, the refrigerating effect is increased, but the compressor suction density is lower. While the volumetric cooling capacity of R455A is comparable, that of R454C is lower than R404A. The coefficient of performance with both alternatives is significantly higher, so there is an energetic and hence environmental benefit from their utilization. The discharge temperature is within the limits, but it can be a limitation in higher compression ratios. The drop-in replacement only required adjustments in the TXV screw and in the refrigerant charge.

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Pages : 17

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Détails

  • Titre original : Replacement of R404A at high condensation temperature using R454C and R455A.
  • Identifiant de la fiche : 30024942
  • Langues : Anglais
  • Source : 1st IIR international conference on the application of HFO refrigerants, Birmingham, September 2-5 2018.
  • Date d'édition : 09/2018

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