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Mélanges alternatifs au R-600a Évaluation théorique et évaluation énergétique expérimentale de mélanges binaires dans un refroidisseur commercial.

Alternative mixtures to R-600a. Theoretical assessment and experimental energy evaluation of binary mixtures in a commercial cooler.

Auteurs : CALLEJA-ANTA D., SÁNCHEZ D., NEBOT-ANDRÉS L., CABELLO R., LLOPIS R.

Type d'article : Article de la RIF

Résumé

This work focuses on the exploration of binary mixtures as alternative to isobutane (R-600a) from a theoretical and experimental point of view. To predict the most energy efficient blends, a theoretical model was used that analysed 5445 different blends consisting of 11 pure refrigerants. Three blends were selected for experimental testing in a commercial cabinet: R-1234ze(E)/R-600 (8/92)%mass, R-152a/R-600 (8/92)%mass and R-32/R-600 (2/98)%mass. The results of the 16-hour tests showed that, at their optimum refrigerant charge, the R-1234ze(E)/R-600 (8/92)%mass and R-152a/R-600 (8/92)%mass blends achieved energy consumption reductions of −2.69% and −5.04%, respectively, while the R-32/R-600 (2/98)%mass blend showed an increase of +0.36%. All blends reduced compressor consumption, but increased duty cycles. The results demonstrate the existence of alternative blends that can significantly reduce isobutane energy consumption with similar thermodynamic properties.

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Format PDF

Pages : 83-92

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  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Alternative mixtures to R-600a. Theoretical assessment and experimental energy evaluation of binary mixtures in a commercial cooler.
  • Identifiant de la fiche : 30031923
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 152
  • Date d'édition : 08/2023
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2023.05.009

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