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Les hydrofluorooléfines utilisées comme frigorigènes dans les applications de production d’eau chaude par pompe à chaleur.

Hydrofluoroolefins as refrigerants for heat pump water heating applications.

Numéro : pap. 2615

Auteurs : NAWAZ K., SHEN B., ELATAR A., et al.

Résumé

Recently there has been a growing interest in utilization of alternative refrigerants for residential and commercial HVAC&R systems due to the potential environmental impacts of conventional fluids (CFCs and HFCs). Hydrofluoroolefins such as R1234yf and R1234ze(E) has shown promising performance and are being extensively considered for range of heat pump applications. This study illustrates the performance evaluation of R1234yf and R1234ze(E) as drop-in-replacement for R134a for heat pump water heating (HPWH). A component-based model is used to predict the performance. Key performance parameters such as unified energy factor, first hour rating and thermal stratification in the water tank are investigated. Along with system modeling appropriate experiments to demonstrate the performance improvements. Both modeling and experimental efforts suggest that HFOs when deployed as alternative refrigerants can provide comparable system performance to that of the baseline system containing R134a. Other concerning parameters such as total system refrigerant charge, the condenser discharge temperature and thermal stratification in water storage tan

Documents disponibles

Format PDF

Pages : 10

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Hydrofluoroolefins as refrigerants for heat pump water heating applications.
  • Identifiant de la fiche : 30024672
  • Langues : Anglais
  • Source : 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 09/07/2018

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