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Comparaison analytique entre le R134a et des frigorigènes de substitution dans un refroidisseur refroidi par eau.

An analytical comparison between R134a and alternative refrigerants in the water-cooled chiller.

Numéro : 1066

Résumé

Owing to escalating effect of global warming on climate change, the replacement of HFCs using lower GWP refrigerants has become a crucial work to reduce the predicted increase of mean surface temperature of the Earth. In the current scenario, this paper presents a water-cooled chiller cycle analysis to identify the relative performance of R134a, potential substitutions R513A, R1234yf, R1234ze(E), and low-pressure refrigerants R1233zd(E) and R1224yd(Z) for a 200RT chiller application. Comparisons between R134a and alternative refrigerants are carried out in terms of coefficient of performance, exergy efficiency, and irreversibility under the three types of working conditions: constant refrigerant volumetric flowrate, constant cooling capacity and fixed refrigerant mass flowrate. For constant volumetric flowrate condition, R513A can be a drop-in substitute for R134a chiller. In the constant cooling capacity and fixed mass flowrate condition, R1234ze(E) has the similar performance to R134a and performance of low-pressure refrigerants R1233zd(E) and R1224yd(Z) is better than that of R134a.

Documents disponibles

Format PDF

Pages : 8

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 : An analytical comparison between R134a and alternative refrigerants in the water-cooled chiller.
  • Identifiant de la fiche : 30028826
  • Langues : Anglais
  • Sujet : Technologie, Alternatives aux HFC
  • Source : 2nd IIR Conference on HFO Refrigerants and Low GWP Blends
  • Date d'édition : 06/2021
  • DOI : http://dx.doi.org/10.18462/iir.HFO.2021.1066
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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