Partager

Document IIF

Approche de la performance limite pour des cycles à économiseur utilisant des cycles simplifiés.

Approaching the performance limit for economized cycles using simplified cycles.

Auteurs : MATHISON M. M., BRAUN J. E., GROLL E. A.

Type d'article : Article, Article de la RIF

Résumé

Modifications such as economization aim to improve the efficiency of vapor compression equipment by cooling the refrigerant during the compression process. A previous study (Mathison et al., 2010) explored the theoretical limit to cycle performance with economizing, which was defined as the performance when a saturated vapor state was maintained in the compressor by continuously injecting a two-phase mixture. However, achieving continuous injection and controlling the quality of the injected refrigerant poses a substantial challenge. Therefore, the current paper investigates the ability of an economized cycle with saturated vapor injection through a finite number of ports to approach the limiting cycle performance. For an air-conditioner using R-410A with an evaporation temperature of 5°C and a condensing temperature of 40°C, the model predicts that injecting saturated vapor through three ports will improve the COP by 12%, which is approximately 67% of the maximum benefit provided by economizing in the limiting case.

Documents disponibles

Format PDF

Pages : 64-72

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 : Approaching the performance limit for economized cycles using simplified cycles.
  • Identifiant de la fiche : 30011934
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 45
  • Date d'édition : 09/2014

Liens


Voir d'autres articles du même numéro (23)
Voir la source

Indexation