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Étude expérimentale d'un mélange de R1234ze(E) et de R134a (R450A) comme remplacement du R134a.

Experimental study of an R1234ze(E)/R134a mixture (R450A) as R134a replacement.

Auteurs : MOTA BABILONI A., NAVARRO-ESBRÍ J., BARRAGÁN-CERVERA A., et al.

Type d'article : Article, Article de la RIF

Résumé

This work presents an experimental analysis of a non-flammable R1234ze(E)/R134a mixture (R450A) as R134a drop-in replacement. While R134a has a high GWP value (1430), the R450A GWP is only 547. The experimental tests are carried out in a vapour compression plant equipped with a variable-speed compressor. The replacement suitability has been studied combining different operating conditions: evaporation temperature, condensation temperature and the use of an internal heat exchanger (IHX). The drop-in cooling capacity of R450A compared with R134a is 6% lower as average. R450A COP is even higher to those resulting with R134a (approximately 1%). The discharge temperature of R450A is lower than that of R134a, 2K as average. The IHX has a similar positive influence on the energy performance of both fluids. In conclusion, R450A can be considered as a good candidate to replace R134a.

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Format PDF

Pages : 52-58

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    20 €

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    Gratuit

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Détails

  • Titre original : Experimental study of an R1234ze(E)/R134a mixture (R450A) as R134a replacement.
  • Identifiant de la fiche : 30013499
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 51
  • Date d'édition : 03/2015

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