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Amélioration des performances d’un système frigorifique au CO2 à l’aide d’un refroidisseur à absorption.

Enhancing the performance of a CO2 refrigeration system with the use of an absorption chiller.

Auteurs : BELLOS E., TZIVANIDIS C.

Type d'article : Article, Article de la RIF

Résumé

The objective of this work is to examine a transcritical CO2 refrigeration system coupled to a single-effect absorption chiller. The role of the absorption machine is to create a subcooling after the gas-cooler in order to increase the COP . The absorption system is fed by waste heat after the CO2 compressor and so there is not any need for any external energy source. The analysis is conducted with a validated numerical model which is developed in Engineering Equation Solver. The system is studied and optimized for different heat rejection temperatures from 35 °C up to 50 °C and for different refrigeration temperatures from -35 °C up to 5 °C. It is found that there is COP enhancement in all the operating scenarios and especially in the cases with higher heat-rejection temperature and lower refrigeration temperature. The mean COP enhancement is about 23.4% which is an important enhancement for designing more efficient systems.

Documents disponibles

Format PDF

Pages : 37-52

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 : Enhancing the performance of a CO2 refrigeration system with the use of an absorption chiller.
  • Identifiant de la fiche : 30027050
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 108
  • Date d'édition : 12/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.09.009

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