Document IIF

Étude numérique du compresseur à spirale avec soupape de décharge intermédiaire pour la promotion des performances annuelles du système VRF.

Numerical investigation on scroll compressor with intermediate discharge valve for VRF annual performance promotion.

Auteurs : YANG M., SHAO S.

Type d'article : Article de la RIF

Résumé

Over-compression of scroll compressor in variable refrigerant flow (VRF) system is a common problem in improving system efficiency because it operates in part load conditions for most of the year. By introducing intermediate discharge valves (IDVs) to allow gas bypass from compression chamber to discharge side during compression process, the over-compression loss can be eliminated. In this study, the characteristics of compression process in IDV compressor are analysed and the effects of IDV port location and port size on compressor efficiency are discussed based on the validated high fidelity scroll compressor model. It is found that the IDVs could be able to adjust gas bypass process in different compression ratio conditions and maintain high efficiency over wider compression ratio range than that of non-IDV compressor. In addition, the VRF system model is integrated to verify the system performance improvement by IDV compressor. It is found that VRF system performance is significantly improved in cooling conditions with the IEER enhanced by 23.9 %, while limited improvement is obtained in heating conditions as the operating compression ratios are relatively higher.

Documents disponibles

Format PDF

Pages : 758-767

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 : Numerical investigation on scroll compressor with intermediate discharge valve for VRF annual performance promotion.
  • Identifiant de la fiche : 30032896
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 168
  • Date d'édition : 12/2024
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2024.10.005

Liens


Voir d'autres articles du même numéro (63)
Voir la source