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Document IIF

Conception et étude des performances de congélation d’un congélateur à plaques fonctionnant au CO2 à une température d’évaporation de -50 °C.

Design and freezing performance study of a CO2 plate freezer at -50°C evaporation temperature.

Numéro : 1198

Auteurs : REN S., HAFNER A., REKSTAD I. H., WIDELL K. N., SVENDSEN E. S., NORDVEDT T. S.

Résumé

Efficient cooling and freezing systems using natural refrigerants offer a sustainable solution for food loss and waste reduction in the food supply chain, particularly by preventing the loss of raw materials. Plate freezers are typical components in modern automated production and processing facilities for freezing processed foodstuffs. At NTNU, a real-sized industrial plate freezer has been implemented into a dedicated CO2 refrigeration system in the laboratory infrastructure. Due to CO2 liquid circulation inside the plates, the unit can provide more than 100 kW of cooling capacity at evaporation temperatures between -30 and -50°C. This study aimed to design the test facility for the proposed plate freezer and numerically investigate the freezing performance. Component sizing was performed using established principles and techniques to accommodate the refrigerant properties. The freezing time evolution for different product masses was analyzed. Furthermore, the effects of evaporation temperature on the freezing time were investigated.

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Format PDF

Pages : 11 p.

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 : Design and freezing performance study of a CO2 plate freezer at -50°C evaporation temperature.
  • Identifiant de la fiche : 30032712
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Date d'édition : 08/2024
  • DOI : http://dx.doi.org/10.18462/iir.gl2024.1198

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