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Analyse expérimentale du remplacement du R-134a et du R-507A par du R-450A et du R-513A dans un système frigorifique commercial à température moyenne.

Experimental analysis of R-450A and R-513A as replacements of R-134a and R-507A in a medium temperature commercial refrigeration system.

Auteurs : LLOPIS R., SÁNCHEZ D., CABELLO R., et al.

Type d'article : Article, Article de la RIF

Résumé

This work presents the experimental evaluation of R-513A (GWP?=?573) and R-450A (GWP?=?547) as R-134a (GWP?=?1301) drop-in replacements and as R-507A (GWP?=?3987) retrofits in a commercial direct expansion refrigeration system for medium temperature applications (2?°C). The evaluation covered 24-hour tests using a single-stage cycle with semi-hermetic compressor, an electronic expansion valve customized for each refrigerant and a commercial vertical cabinet with doors placed inside a climatic chamber. The tests were performed at three water dissipation temperatures (23.3, 32.8 and 43.6?°C). Experimental results indicate that R-513A and R-450A can operate with R-134a plants, with increments in energy consumption between -1.6 to +1.2% for R-513A and from +1.3 to +6.8% for R-450A, whereas in comparison with R-507A, R-513A offered reductions in energy consumption between 4.4 to 8.2% and R-450A between 0 to 3.3%. The paper analyzes the modification of the operating pressures/temperatures and the energy indicators using the four refrigerants.

Documents disponibles

Format PDF

Pages : 52-66

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 : Experimental analysis of R-450A and R-513A as replacements of R-134a and R-507A in a medium temperature commercial refrigeration system.
  • Identifiant de la fiche : 30022521
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 84
  • Date d'édition : 12/2017
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.08.022

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