Journal
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
Volume 89, Issue -, Pages 131-141Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2018.02.012
Keywords
Apple; Forced-air cooling; Cold chain; Computational fluid dynamics (CFD); Energy consumption
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Funding
- National Natural Science Foundation of China [31671593]
- FP7 International Research Staff Exchange Scheme Project [PIRSES-GA-2013-612659]
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This study proposed an integrated approach to evaluate the efficiency of forced-air cooling of apples stacked on pallets. Computational fluid dynamics (CFD) modeling was used to evaluate the cooling rate, uniformity, moisture loss, and energy consumption during precooling of apples. Experiments were conducted to quantify the incidence of chilling injury. A reasonable increase in cooling rate and uniformity was obtained with an increase in air-inflow rate to 2.31 L s(-1) kg(-1); any further increase in air-inflow rate will lead to a relatively low increase in cooling rate and uniformity, but a significant increase in energy consumption and cooling injury. An exponential relationship exists between fan power (P-w) and pressure differential (Delta P) as well as between total fan energy consumption (E-c) and air-inflow rate (E-c = hx(k)). Finally, the mass loss of fruit is primarily influenced by cooling time rather than air-inflow rate. (C) 2018 Elsevier Ltd and IIR. All rights reserved.
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