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Document IIF

Nouvelle méthode de régulation du dégivrage fondée sur le degré de surchauffe du frigorigène, pour une pompe à chaleur aérothermique.

A novel defrosting control method based on the degree of refrigerant superheat for air source heat pumps.

Auteurs : JIANG Y., DONG J., QU M., et al.

Type d'article : Article, Article de la RIF

Résumé

When an air source heat pump (ASHP) unit operates for space heating at a frosting environment, periodic defrosting is necessary to maintain a high system performance. To defrost efficiently, it is necessary to find an effective defrosting control method. In this paper, an experiment was carried out on an ASHP unit with a capillary tube as a throttle device, under simulated frosting and defrosting conditions using time control defrosting method, and the experimental results are firstly presented. Secondly, a novel defrosting control method based on the degree of refrigerant superheat (DS) is reported. To validate the novel defrosting control method, a further experiment was conducted on another ASHP unit with an electronic expansion valve (EEV) as a throttle device, under simulated frosting and defrosting conditions. The experimental results demonstrated that when applying the novel defrosting control method, defrosting was initiated before the operating performances of ASHP unit rapidly deteriorated, which was more reasonable.

Documents disponibles

Format PDF

Pages : 2278-2288

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 : A novel defrosting control method based on the degree of refrigerant superheat for air source heat pumps.
  • Identifiant de la fiche : 30009841
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 8
  • Date d'édition : 12/2013

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