Partager

Document IIF

Caractéristiques de fonctionnement d'un système frigorifique à air à cycle ouvert hors des conditions prévues lors de la conception.

Off-design operating characteristics of an open-cycle air refrigeration system.

Auteurs : PARK S. K., AHN J. H., KIM T. S.

Type d'article : Article, Article de la RIF

Résumé

Air cycle refrigeration based on the reverse Brayton cycle is a potential solution to environmental problems. In this study, the operating characteristics of an open-air cycle refrigeration system were simulated and analyzed. First, optimal design conditions were found through a design parametric study. Then, the operation of the system was simulated using off-design models. Two partial load operating strategies were compared: fixed shaft speed operation and variable speed operation. Fixed shaft speed operation requires a decrease in the refrigeration temperature as the refrigeration capacity decreases. Variable speed operation can operate with any specified refrigeration temperature. Both operations accompany a reduction in the coefficient of performance compared to the design value, but variable speed operation exhibits much less reduction at the same refrigeration capacity. The authors present system performance maps and demonstrat that all of the operating conditions, which differ in refrigeration capacity and refrigeration temperature, can be addressed by varying both the speed and target refrigeration temperature simultaneously.

Documents disponibles

Format PDF

Pages : 2311-2320

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 : Off-design operating characteristics of an open-cycle air refrigeration system.
  • Identifiant de la fiche : 30005998
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 35 - n. 8
  • Date d'édition : 12/2012

Liens


Voir d'autres articles du même numéro (26)
Voir la source

Indexation