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Impact of the orientation of the air flow in a spiral freezer on thermal and energy efficiency.

Impact de l'orientation du flux d'air dans un surgélateur spirale sur l'efficacité thermique et énergétique.

Author(s) : LE BAIL A., MORIO A., TURRINI C., et al.

Type of article: Article

Summary

This study has been curried out within the framework of collaboration between GEA Aerofreeze Europe and ENITIAA. If concerns the impact of the air flow orientation inside the freezer equipped with a conveyor belt on the heat transfer performance (convective heat transfer coefficient & residence time). Two blowing devices can be used in such perpendicular flow experiments; studies have been carried out to assess the two configurations with respect to heat transfer performance (convective heat transfer coefficient) and with respect to the energy criterion (pressure drop). Results showed that perpendicular air flow has the most refrigerating efficiency but resulted in a higher energy demand (pressure drop). It emerges that the arrangement of a perpendicular air flow is more efficient in terms of heat exchange but induces higher pressure drops. it would be necessary to perform more in-depth investigation, aiming at optimizing flow conditions in terms of energy criteria.

Details

  • Original title: Impact de l'orientation du flux d'air dans un surgélateur spirale sur l'efficacité thermique et énergétique.
  • Record ID : 2010-0873
  • Languages: French
  • Source: Revue générale du Froid & du Conditionnement d'air - vol. 99 - n. 1098
  • Publication date: 2009/11

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