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Optimisation énergétique d'une pompe à chaleur transcritique au CO2 pour les applications combinées de chauffage, de refroidissement et d'accumulation thermique.

Energy optimization for transcritical CO2 heat pump for combined heating and cooling and thermal storage applications.

Numéro : pap. 2116

Auteurs : CARMO C., BLARKE M., YAZAWA K., et al.

Résumé

A transcritical heat pump cycle using carbon dioxide (CO2) as the refrigerant is known to feature an excellent coefficient of performance (COP) as a thermodynamic system. Using this feature, we are designing and building a system that combines a water-to-water CO2 heat pump with both hot and cold thermal storages know as Thermal Battery (TB) (Blarke, 2012). Smart and effective use of intermittent renewable energy resources (for example solar and wind power) is obtained supplying water heating (>70°C) and cooling services (<10°C) for residential and commercial buildings. Our fundamental hypothesis is that if electricity generated by intermittent sources is destined for thermal end-uses an efficient conversion of electricity to thermal energy and storage enables a flexible power supply. Thermal storage is more cost-effective than any electro-chemical or mechanical storage technology. The usability and the cost effectiveness are critical for smart grid policies on large-scale integration of intermittent renewables. In this paper, we present an analytic thermodynamic model that predicts the effect of temperature and flow rate of hot and cold water circulation on system COP. The analytical predictions are consistent with the experimental results (Sarkar, 2010).

Documents disponibles

Format PDF

Pages : 9 p.

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 : Energy optimization for transcritical CO2 heat pump for combined heating and cooling and thermal storage applications.
  • Identifiant de la fiche : 30006606
  • Langues : Anglais
  • Source : 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 16/07/2012

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