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Étude de la performance énergétique moyenne des systèmes de chauffe-eau à pompe à chaleur au CO2 transcritique à Shanghai.

Study on annual energy performance of transcritical CO2 heat pump water heating systems in Shanghai.

Auteurs : LIANG X. Y., CHENG J. H., HE Y. J., et al.

Type d'article : Article, Article de la RIF, Étude de cas

Résumé

CO2 heat pump water heating is an energy-efficient technology and being widely applied in Shanghai. However, its energy efficiency after long-term operation has not been well evaluated so far. In this paper, the energy efficiency and potential issues of CO2 heat pump water heater after multi-year service are in- depth investigated. In-situ study of CO2 heat pump water heating systems in Shanghai was carried out. Operating data were collected and field test was conducted. A typical case was chosen for comprehensive analysis. The results show that the annual performance factor (APF) of the actual system is 2.57, relative to 4.12 in its perfect shape. To find out what happened to this system, a simulation model was developed, calibrated and validated with field test data and operating data. In terms of simulations, suggestions were made on the system design and control for long-term performance improvement.

Documents disponibles

Format PDF

Pages : 174-182

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 : Study on annual energy performance of transcritical CO2 heat pump water heating systems in Shanghai.
  • Identifiant de la fiche : 30026975
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 107
  • Date d'édition : 11/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.07.016

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