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  • Studying airflow and heat transfer characteristics of a horticultural produce packaging system using a 3-D CFD model. Part II: effect of package design.

    Author(s) : Delele, M. A.Ngcobo, M. E. K.Getahun, S. T.Chen, L.Mellmann, J.Opara, U. L.

    Author Affiliation : Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa.

    Author Email : opara@sun.ac.zaumunam@yahoo.co.uk

    Journal article : Postharvest Biology and Technology 2013 Vol.86 pp.546-555 ref.34

    Abstract : A 3-D computational fluid dynamics (CFD) model was applied to study the effect of package vent design on airflow and heat transferheat transferSubject Category: Miscellaneous
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    during postharvest handlinghandlingSubject Category: Miscellaneous
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    of horticultural products. The effect of vent area, shape, number and position on airflow and heat transfer characteristicscharacteristicsSubject Category: Properties
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    was studied. An increase in vent area decreased the total pressure drop and increased the uniformity of airflow and temperature. Total pressure drop was expressed as a function of vent area in the form of a Darcy-Forchheimer equation and the results showed that vent area affected both Darcy and Forchheimer terms. Half and seven eighths coolingcoolingSubject Category: Techniques, Methodologies and Equipment
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    times and cooling rate of fruit were expressed as a function of vent area ratio and the results showed that vent number, position and shape mainly affected the uniformity of airflow and cooling. Cooling rate increased with an increase in vent area but the sensitivity of the increase in cooling rate decreased with an increase in vent area. With an increase in vent area up to 7%, there was a reasonable increase in cooling rate; however, further increase in vent area showed a relatively low increase in cooling rate. To optimize package venting, there is a need to combine such airflow and heat transfer studies with analysis of package mechanical integrity.

    ISSN : 0925-5214

    DOI : 10.1016/j.postharvbio.2013.08.015

    Record Number : 20133393381

    Publisher : Elsevier

    Location of publication : Amsterdam

    Country of publication : Netherlands

    Language of text : English

    Indexing terms for this abstract:

    Descriptor(s) : characteristicscharacteristicsSubject Category: Properties
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    , coolingcoolingSubject Category: Techniques, Methodologies and Equipment
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    , effectseffectsSubject Category: Properties
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    , fruitsfruitsSubject Category: Anatomical and Morphological Structures
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    , handlinghandlingSubject Category: Miscellaneous
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    , heat transferheat transferSubject Category: Miscellaneous
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    , horticulturehorticultureSubject Category: Disciplines, Occupations and Industries
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    , packagingpackagingSubject Category: Techniques, Methodologies and Equipment
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    , postharvest systemspostharvest systemsSubject Category: Techniques, Methodologies and Equipment
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    , precoolingprecoolingSubject Category: Techniques, Methodologies and Equipment
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