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Optimisations à partir de la modélisation de climatiseurs de toit monoblocs utilisant des frigorigènes à faible potentiel de réchauffement planétaire.

Model-based optimizations of packaged rooftop air conditioners using low global warming potential refrigerants.

Auteurs : SHEN B., ABDELAZIZ O., SHRESTHA S., et al.

Type d'article : Article, Article de la RIF

Résumé

Based on laboratory investigations for R-22 and R-410A alternative low GWP refrigerants in two baseline rooftop air conditioners (RTU), the DOE/ORNL Heat Pump Design Model was used to model the two RTUs and the models were calibrated against the experimental data. We compared the compressor efficiencies and heat exchanger performances. An efficiency-based compressor mapping method was developed. Extensive model-based optimizations were conducted to provide a fair comparison between all the low GWP candidates by selecting optimal configurations. The results illustrate that all the R-22 low GWP refrigerants will lead to slightly lower COPs. ARM-20B appears to be the best R-22 replacement at normal conditions. At higher ambient temperatures, ARM-20A exhibits better performance. All R-410A low GWP candidates will result in similar or better efficiencies than R-410A. R-32 has the best COP while requiring the smallest compressor. R-452B uses the closest compressor displacement volume and achieves the same efficiency as R-410A.

Documents disponibles

Format PDF

Pages : 106-117

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 : Model-based optimizations of packaged rooftop air conditioners using low global warming potential refrigerants.
  • Identifiant de la fiche : 30023885
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 87
  • Date d'édition : 03/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.10.028

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