期刊
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
卷 32, 期 2, 页码 335-348出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2008.04.010
关键词
Strawberry; Post-harvest processing; Cooling; Packaging; Pallet; Modelling; Forced-convection; Air
资金
- National Research initiative Program of United States Department of Agriculture [05-35503-15381]
A numerical analysis of the forced-air cooling process of retail packages of strawberries was performed by solving the conservation equations of mass, momentum and energy within the system. The results showed that the heterogeneity of the cooling process is largely influenced by the structure and design of the packaging system (individual clamshell packages and trays). On average 75 +/- 2% of the total airflow forced through the system bypassed the clamshells, and 46 +/- 5% of the flow rate forced through clamshells bypassed the strawberries. After 1 h of cooling, the average-fruit-temperature per clamshell ranged from 2.4 degrees C to 8.3 degrees C between the first and last clamshells along the main flow direction. Within these clamshells, the maximum differences in the volume-average temperature of individual fruits reached 3.5 degrees C and 5.1 degrees C, respectively. The results show the potential use of this numerical approach as a design tool to optimize the forced-air cooling process of horticultural products. (C) 2008 Elsevier Ltd and IIR. All rights reserved.
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