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Analyse thermodynamique d’un nouveau cycle frigorifique à éjecteur- en cascade pour la congélation et le conditionnement d’air.

Thermodynamic analysis of a novel ejector-cascade refrigeration cycles for freezing process applications and air-conditioning.

Auteurs : MEGDOULI K., TASHTOUSH B. M., NAHDI E., et al.

Type d'article : Article, Article de la RIF

Résumé

Waste heat from the gas cooler is a form of free energy, which can be utilized to drive an ejector cooling cycle. This paper presents a new CO2 ejector-cascade refrigeration cycle. The effects of important parameters on the thermodynamic performance of the new cycle are theoretically investigated based on energetic and exergetic analyses. Furthermore, the performance comparison of the proposed cycle and conventional cycle is carried out. The theoretical study shows that the new cycle exhibits a reasonable value of COP (coefficient of performance) and system second law efficiency. For the same cooling capacity, the improvements of the maximum COP and second law efficiency could reach 37% and 12%, respectively, over those of the conventional cascade cycle under the given operating conditions and at the optimum gas cooler pressure.

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Format PDF

Pages : 108-118

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 : Thermodynamic analysis of a novel ejector-cascade refrigeration cycles for freezing process applications and air-conditioning.
  • Identifiant de la fiche : 30018648
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 70
  • Date d'édition : 10/2016

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