Partager

Document IIF

Sous-refroidissement optimal dans des systèmes à compression de vapeur grâce à une régulation recherchant les [extrema] : théorie et expériences.

Optimal subcooling in vapor compression systems via extremum seeking control: theory and experiments.

Auteurs : KOELN J., ALLEYNE A. G.

Type d'article : Article, Article de la RIF

Résumé

With vapor compression systems consuming a significant portion of the overall U.S. energy consumption each year, extensive efforts have been made toward the development of control strategies which aim to maximize system efficiency while providing the desired cooling. However, previous control strategies under-utilize a degree of freedom corresponding to the amount of refrigerant in the system, which is related to condenser subcooling and can significantly affect system efficiency. In this paper, an alternative system architecture, which utilizes a receiver and an additional electronic expansion valve, is used to provide independent control of condenser subcooling. Simulation and experimental results show there exists an optimal subcooling which maximizes system efficiency; however, this optimal subcooling changes with operating conditions. Therefore, extremum seeking control is implemented to find the optimal subcooling in an adaptive, model-free manner. Experimental results demonstrate a 9% increase in efficiency using the alternative architecture and extremum seeking control.

Documents disponibles

Format PDF

Pages : 14-25

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 : Optimal subcooling in vapor compression systems via extremum seeking control: theory and experiments.
  • Identifiant de la fiche : 30011638
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 43
  • Date d'édition : 07/2014

Liens


Voir d'autres articles du même numéro (17)
Voir la source

Indexation