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Document IIF

Analyse thermodynamique appuyée par CFD d'un système frigorifique pour supermarché basé sur un échangeur de pression à CO2.

CFD supported thermodynamic analysis of a CO2 pressure exchanger based refrigeration system for supermarkets.

Auteurs : SENGUPTA A., DASGUPTA M. S.

Type d'article : Article de la RIF

Résumé

This manuscript presents a method to thermodynamically model a pressure exchanger device. CFD-based model of a rotary energy recovery device used in desalination process is developed and validated with published experimental data with a maximum deviation of 5.19%. The dimensionality of the validated model was reduced to investigate the potential of the pressure exchanger device operating with CO2 as the working fluid. Based on the data obtained from several numerical experiments, two correlations were developed, by means of non-linear regression analysis, for estimating the pressure lift generated by the device as a function of inlet velocity of high pressure fluid (0.5 – 3 m/s), rotor speed (500 – 3000 rpm), receiver pressure (25 – 40 bar) and gas-cooler pressure (90 – 120 bar). The correlations were found to be within acceptable error margin. The pressure lift generated by the pressure exchanger was found to be directly proportional to the inlet velocity of the high pressure fluid and inverse proportionality to the rotor speed. The developed correlations are used to evaluate the thermodynamic performance of a multi evaporator supermarket refrigeration system integrated with pressure exchanger to a conventional parallel compression system and a published multi-ejector system in the ambient temperature range of 30 to 40 °C. The pressure exchanger based system was found to outperform the parallel compression as well as the multi-ejector system and demonstrate significant energy savings.

Documents disponibles

Format PDF

Pages : 110-121

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 : CFD supported thermodynamic analysis of a CO2 pressure exchanger based refrigeration system for supermarkets.
  • Identifiant de la fiche : 30031925
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 152
  • Date d'édition : 08/2023
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2023.04.012

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