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Evaluation expérimentale des procédés de congélation utilisant des congélateurs à plaques horizontales employant le CO2 en tant que frigorigène.

Experimental evaluation of freezing processes in horizontal plate freezers using CO2 as refrigerant.

Auteurs : DOPAZO J. A., FERNÁNDEZ-SEARA J.

Type d'article : Article, Article de la RIF

Résumé

This paper deals with an experimental analysis of freezing processes using a horizontal plate freezer with CO2 as refrigerant. The CO2 is supplied from an experimental CO2/NH3 cascade refrigeration system facility with a 9 kW of refrigeration capacity at -50°C. The experimental facility, the data acquisition system and the experimental methodology are described. The experimental results include the temperature evolution in the product to be frozen, the CO2 evaporating temperature and freezing times. Results show a clear link between the freezing time and CO2 average evaporating temperature. The observed trend showed that a temperature reduction of 1°C causes a reduction of approximately 2 min in the freezing time. The experimental results also include the refrigeration capacity of the facility, the electric power of the compressors and the cascade system COP. In addition, a numerical model of the freezing process using a commercial software was developed and validated. The results obtained would confirm that the use of CO2 as refrigerant in plate freezers represents a viable alternative to the refrigerants currently in use.

Documents disponibles

Format PDF

Pages : 2093-2101

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 : Experimental evaluation of freezing processes in horizontal plate freezers using CO2 as refrigerant.
  • Identifiant de la fiche : 30005961
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 35 - n. 8
  • Date d'édition : 12/2012

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