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Évaluation pluriannuelle du R-449A comme substitut au R-22 pour des applications frigorifiques à basse et à moyenne température.

Multi-Year evaluation of R-449A as a replacement for R-22 in low temperature and medium temperature refrigeration applications.

Numéro : pap. 2450

Auteurs : PANSULLA A., ALLGOOD C.

Résumé

HCFC based refrigerants, such as R-22, are being phased out globally due to issues with stratospheric ozone depletion. In order to effectively do so, a series of HFC blend alternatives, such as R-407C and R-404A, have been introduced. While these refrigerants have no ozone depletion potential (ODP), they do occasionally have similar, or even higher, global warming potential (GWP) than the fluids they replaced. The global HVACR industry is now researching and developing a new generation of low GWP and zero ODP refrigerants that will possess similar operational characteristics and favorable energy efficiencies when compared to their HCFC predecessors. Hydrofluoro olefins (HFOs) and HFO blends have recently emerged as a potential new class of low GWP, zero ODP refrigerant fluids. R-449A (XP40) is an HFO-based refrigerant blend that was initially developed as a replacement for high GWP HFC blends like R-404A/R-507, but now is being investigated as a potential R-22 alternative in refrigeration applications as well. This paper will report the results of an extensive study investigating the performance of R-449A relative to R-22 in both low temperature and medium temperature refrigeration applications. Data presented includes results of constant compressor displacement thermodynamic cycle models, compressor calorimeter testing at various operating conditions, display case freezer testing in temperature and humidity controlled environmental chambers, and real world field system data from operating supermarkets in the United States. Operational and energy performance data for the various systems will be compared to baseline operation on R-22.

Documents disponibles

Format PDF

Pages : 10

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Multi-Year evaluation of R-449A as a replacement for R-22 in low temperature and medium temperature refrigeration applications.
  • Identifiant de la fiche : 30018979
  • Langues : Anglais
  • Source : 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 11/07/2016

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