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Experimental study and digital modelling of the effect of thermal shocks on cod fillets in pallets.

Étude expérimentale et modélisation numérique des effets de chocs thermiques sur des filets de cabillaud palettisés.

Author(s) : MARGEIRSSON B., PÁLSSON H., ARASON S., et al.

Type of article: Article

Summary

Temperature variations in cod fillets packaged in four levels of expanded polystyrene (EPS) boxes and corrugated plastic (CP) boxes stored on pallets under thermal load were studied numerically and experimentally. In the experiment, fillet temperatures at multiple positions on the pallets along with environ mental temperature were monitored. Differences in product temperature of up to 10.5°C were recorded on the thermally abused pallets stored for 6.4 hours at a mean ambient temperature of 18.5°C. Transient heat transfer models were also developed using the ANSYS FLUENT CFD software. A satisfactory agreement was seen between experimental and numerical results. The EPS box model was further developed in order to simulate temperature evolution inside a fuIly loaded 12-level pallet under the same temperature conditions as a four level pallet studied before. The mean temperature after 9-hour thermal load was 1.0°C lower in the 12-level pallet but the maximum temperature evolution was similar in both pallets. ParaIlel to this, a storage life study was carried out to evaluate the effect of the fish temperature variation on quality deterioration of the cod fillets as influenced by the box type used and their position on pallets. Storage lite of thermally abused fillets was compared to that of fillets stored at steady temperature. Compared to steady temperature storage, a storage life reduction of 1.5 to 3 days was observed, depending on the box position on the abused pallets.

Details

  • Original title: Étude expérimentale et modélisation numérique des effets de chocs thermiques sur des filets de cabillaud palettisés.
  • Record ID : 30011604
  • Languages: French
  • Source: Revue générale du Froid & du Conditionnement d'air - vol. 104 - n. 1143
  • Publication date: 2014/05

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