Partager

Comparaison de l'optimisation du COP avec la maximisation du coefficient de performance du système pour les systèmes frigorifiques de supermarchés.

Comparing COP optimization with maximizing the coefficient of system performance for refrigeration systems in supermarkets.

Numéro : pap. 2126

Auteurs : BRAUN M. R., BECK S. B. M., ALTAN H.

Résumé

In recent years the energy usage of supermarkets, in particular that of their refrigeration systems, has been investigated using a variety of approaches, such as floating pressure set points and integrating the heating and refrigeration systems. Something which has not yet attracted much attention is the energy consumption of the dry condenser fans in refrigeration systems. This is surprising as it has been shown for comparable installations that including the energy consumption of these fans when optimizing the system efficiency was beneficial. To address this deficit, COP maximization has been compared to optimizing the Coefficient of System Performance (COSP). The simple refrigeration system used for this investigation was based on a commercially available R404A/CO2 system comprising the basic components, with the condenser having extractor fans. The results show that, when the outdoor temperature is below about 15°C, there is no observable difference between these two approaches. However, when the ambient temperature increases beyond this threshold, the control method which optimizes COSP is significantly better for part load conditions. This indicates that maximizing the COP can lead to a sub-optimal system in terms of energy consumption under part load conditions. When the refrigeration system is at its full load point, however, both approaches produce similar results again.

Documents disponibles

Format PDF

Pages : 10 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Comparing COP optimization with maximizing the coefficient of system performance for refrigeration systems in supermarkets.
  • Identifiant de la fiche : 30013409
  • Langues : Anglais
  • Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 14/07/2014

Liens


Voir d'autres communications du même compte rendu (203)
Voir le compte rendu de la conférence

Indexation