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Comparaison des performances de chauffage du R410A et de ses substituts dans les pompes à chaleur air-eau à injection de vapeur.

Heating performance comparison of R410A and its substitutions in air-to-water heat pumps with vapor injection.

Auteurs : CHEN X., YANG J., LIU C., et al.

Type d'article : Article, Article de la RIF

Résumé

R410A has been widely applied in air-to-water heat pumps for space heating, but its phase-out process is accelerated due to the high GWP. This paper investigates the heating performances of low GWP HFO mixtures (R452B and R447B) as substitutions in a sub-cooler vapor injection cycle. The results illustrate that the capacities of R452B and R447B systems are lower by 0.7–5% and 6–15% in the measured conditions, respectively. The attenuation with the ambient temperature of R452B is slower than that of R410A, while R447B is faster. The COP improvements of R452B are 4–9% and 1.4–2.4% with and without vapor injection, respectively. The COP increases of R447B are 3–12% and 0.4–3.8% with and without vapor injection, respectively. In view of injection characteristics, the optimal injection pressure ratios of R452B and R447B are slightly higher. Synthetically R452B and R447B perform more excellent in the high outlet water temperature conditions and R452B is also suitable for low ambient temperatures.

Documents disponibles

Format PDF

Pages : 78-87

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 : Heating performance comparison of R410A and its substitutions in air-to-water heat pumps with vapor injection.
  • Identifiant de la fiche : 30025226
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 96
  • Date d'édition : 12/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.09.007

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