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Document IIF

Étude des avantages d’un détendeur électronique dans le système thermique d’un véhicule électrique par rapport à un détendeur thermostatique avec robinet d’arrêt.

Benefits investigation of electronic expansion valve in electric vehicle thermal system as compared to thermal expansion valve with shut-off valve.

Auteurs : ZHANG R., STANKE E. J., ZHANG G., et al.

Type d'article : Article, Article de la RIF

Résumé

Typical electric vehicle thermal management system with air conditioning and battery cooling is introduced with different refrigerant flow control devices. Electronic expansion valve (EXV) and thermal expansion valve integrated with shut off valve (TXV+SOV) are adopted in such a dual evaporators cooling system as refrigerant flow control valve to investigate the benefits of EXV compared to TXV+SOV by testing. Test result shows the EXV has significant benefits of proper refrigerant distribution with less system fluctuation to avoid the dissatisfaction of customer. With the TXV+SOV control, due to mal-distributed refrigerant flow between air conditioner evaporator and battery chiller, air conditioner blow off temperature variation can reach 8°C which will significantly affect the comfort of passenger cabinet. While with EXV control, air conditioner blow off temperature is very stable. Stable control of EXV also contributes to system efficiency improvement than the TXV+SOV by saving the energy up to 20%.

Documents disponibles

Format PDF

Pages : 404-413

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 : Benefits investigation of electronic expansion valve in electric vehicle thermal system as compared to thermal expansion valve with shut-off valve.
  • Identifiant de la fiche : 30025647
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 100
  • Date d'édition : 04/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.02.018

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