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Pompe à chaleur aérothermique résidentielle avec injection de frigorigène et compresseur à vitesse variable: Étude expérimentale et modélisation du compresseur.

Residential air-source heat pump with refrigerant injection and variable speed compressor: Experimental investigation and compressor modeling.

Auteurs : DECHESNE B., TELLO-OQUENDO F. M., GENDEBIEN S., et al.

Type d'article : Article, Article de la RIF

Résumé

This paper presents an experimental study of a residential heat pump working with a variable speed scroll compressor with refrigerant injection and R410A as the working fluid. The experimental campaign is aimed at investigating the performance of the scroll compressor under different evaporating and condensing temperatures and rotational speeds. This campaign helped appropriate mathematical expressions to be chosen for an empirical compressor model that is presented in this study. Moreover, the impact of the superheat at the suction and injection ports is investigated for several compressor speeds and working conditions. Decreasing the evaporator superheat from 15 to 5 K helped to increase the COP and heating capacity by 9.3% and 12.6% on average respectively, and to decrease the discharge temperature by 6 K on average. Decreasing the injection superheat had no impact on the COP but helped to increase the heating capacity by 3.5% and decrease the discharge temperature by an additional 7 K . The coupling of the injection and suction superheat control is also presented and offers perspectives for advanced expansion valve control of the injection cycle. Finally, an empirical model of the compressor is presented. This model is based on five dimensionless relations and shows good accuracy in predicting the compressor mass flow rates, electrical consumption and discharge temperature.

Documents disponibles

Format PDF

Pages : 79-90

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 : Residential air-source heat pump with refrigerant injection and variable speed compressor: Experimental investigation and compressor modeling.
  • Identifiant de la fiche : 30027053
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 108
  • Date d'édition : 12/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.08.034

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