Partager

Impact d'un échangeur de chaleur interne sur la performance d'un cycle transcritique au R744.

Contribution of internal heat exchanger to transcritical R744 cycle performance.

Auteurs : BOEWE D. E., BULLARD C. W., YIN J. M., et al.

Résumé

The paper presents results of 178 experiments evaluating the effects of internal heat exchange on the performance of a well-instrumented prototype transcritical mobile air-conditioning system using R744 (carbon dioxide) as the refrigerant. The effect on cycle efficiency is substantial, up to 25%, because of the relatively high irreversibility at the expansion device in the standard transcritical cycle. The test data were used to develop a simulation model. Finally the model was used to develop an optimal design reducing material requirements by 50% while increasing effectiveness by 10%. The cycle optimization was guided by the trade-off between heat exchanger effectiveness and suction pressure drop.

Détails

  • Titre original : Contribution of internal heat exchanger to transcritical R744 cycle performance.
  • Identifiant de la fiche : 2003-1565
  • Langues : Anglais
  • Source : ASHRAE Transactions. 2001 annual Meeting, Cincinnati, Ohio. Volume 107, part 2 + CD-ROM.
  • Date d'édition : 24/06/2001
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

Liens


Voir d'autres communications du même compte rendu (34)
Voir le compte rendu de la conférence

Indexation