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Recherche d’une logique de régulation du dégivrage efficace pour un système de conditionnement d'air à pompe à chaleur au CO2 transcritique pour véhicule électrique.

Research on efficient defrosting control logic for transcritical CO2 electric vehicle heat pump air-conditioning system.

Auteurs : WANG A., CAO F., FANG J., JIA F., YIN X., WANG X.

Type d'article : Article de la RIF

Résumé

The improper defrosting operation would not only cause severe performance deterioration and energy waste but also reduce comfort. The dynamic control strategy of electric vehicle heat pumps is more complicated than that of other heat pumps. To find an efficient defrosting control logic, a transcritical CO2 heat pump test bench for electric vehicles was built. First, the thermodynamic dynamic characteristics in the defrosting process were analyzed, based on which a method for accurately determining the end of defrosting was proposed. Then, a comparative experiment on the core parameters that affected the defrosting speed was carried out, and suggestions for optimizing defrosting control strategy were given. In addition, the dynamic thermodynamic characteristics in the continuous frost-defrosting process under different humidity were further studied. It was found that the humidity decided whether additional dehumidification strategies should be adopted after defrosting. Finally, detailed dynamic control logic of the operation process from heating and frosting to defrosting was proposed. The research will promote the development of the electric vehicle industry by improving defrosting efficiency and meeting the requirements of socially sustainable development through saving energy.

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Format PDF

Pages : 13-22

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Research on efficient defrosting control logic for transcritical CO2 electric vehicle heat pump air-conditioning system.
  • Identifiant de la fiche : 30029609
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 138
  • Date d'édition : 06/2022
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.03.028
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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