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Recherche sur la méthode de régulation d'une pompe à chaleur aérothermique au R290 dans des conditions de chauffage à basse température.

Research on control method of a R290 ASHP under low-temperature heating condition.

Auteurs : DU Y., WU J., WANG C.

Type d'article : Article de la RIF

Résumé

Due to the consensus on energy conservation and environmental protection in the international community, and considering the environmental protection and thermophysical properties, R290 has great advantages as an alternative working fluid compared with R22 in the field of air conditioner and heat pump. In the promotion process of the R290 air source heat pump (ASHP), the potential safety hazard caused by flammability can be controlled, but effective control methods are needed to ensure the reliability of the low-temperature heating process. In this paper, a new modified control strategy (MST) was proposed for R290 ASHP. The experimental results showed that the lubricating oil discharged from the compressor with MST was 10.55g less than the original control strategy (OST). In addition, when the temperature judgment condition for starting to adjust the opening of MST was 4°C, the performance was improved (using the MST) by about 1%. Whether from the point of view of reducing the discharge of lubricating oil from the compressor or the storage of refrigerant in the compressor and accumulator, the MST can effectively eliminate the oil blockage, thus improving the reliability of the heat pump system, while having beneficial impacts on the performance of the R290 heat pump.

Documents disponibles

Format PDF

Pages : 60-68

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 : Research on control method of a R290 ASHP under low-temperature heating condition.
  • Identifiant de la fiche : 30028694
  • Langues : Anglais
  • Sujet : Technologie, Alternatives aux HFC
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 129
  • Date d'édition : 09/2021
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2021.04.026
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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