Mathematical modeling of airflow and heat transfer during forced convection cooling of produce considering various package vent areas

Dehghannya, Jalal; Ngadi, Michael; Vigneault, Clément

doi:10.1016/j.foodcont.2011.02.019

Cited by 72 publications

(40 citation statements)

References 15 publications

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“…To address these questions regarding produce cooling behaviour in refrigerated containers, computational fluid dynamics (CFD) is a more appropriate tool and nicely complements basic calculations and experiments. CFD has been applied extensively within a FAC context Dehghannya et al, 2012Dehghannya et al, , 2011Dehghannya et al, , 2010Delele et al, 2013aDelele et al, , 2013bFerrua and Singh, 2011, 2009a, 2009bSmale et al, 2006;Verboven et al, 2006;Zou et al, 2006aZou et al, , 2006b, but only to a very limited extent for cooling during transport (James et al, 2006;Moureh and Flick, 2004;Moureh et al, 2009Moureh et al, , 2002Tapsoba et al, 2007Tapsoba et al, , 2006, predominantly for refrigerated vehicles.…”

Section: Side Viewmentioning

confidence: 99%

Exploring ambient loading of citrus fruit into reefer containers for cooling during marine transport using computational fluid dynamics

Defraeye

Cronjé

Verboven

et al. 2015

Postharvest Biology and Technology

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Defraeye T., Cronjé P., Verboven P., Opara U.L., , Exploring ambient loading of citrus fruit into reefer containers for cooling during marine transport using computational fluid dynamics, Postharvest Biology and Technology 108, 91-101. AbstractA promising cold-chain protocol is explored as an alternative to the commonly-used forced-air pre-cooling (FAC) of citrus fruit prior to shipping: ambient loading of fruit in reefer containers for cooling during long-haul marine transport. Despite the multiple logistical and economical savings it provides, the potential of "ambient loading" of fruit in reefer containers has been left largely unexplored. The present study targets this aspect, but also cooling by vertical airflow in general. Computational fluid dynamics (CFD) is used to identify differences in cooling rate and uniformity between individual boxes at different heights on a pallet and between individual fruit within a single box. Simulations show that low airflow rates, typical for refrigerated containers, do not only induce slower fruit cooling, compared to FAC airflow rates, but also the cooling heterogeneity between different layers of boxes (in height) and between individual fruit in a single box is larger. In addition, the presence of gaps between pallets invokes airflow short-circuiting, leading to highly reduced fruit cooling rates. Finally, strategies for future improvement of the ambient loading protocol are proposed, which in the first place should target faster and more uniform cooling. Keywordscomputational fluid dynamics; package design; cold chain; airflow short-circuits; vent holes; convective transfer Defraeye T., Cronjé P., Verboven P., Opara U.L., , Exploring ambient loading of citrus fruit into reefer containers for cooling during marine transport using computational fluid dynamics, Postharvest Biology and Technology 108, 91-101.http://dx

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Section: Side Viewmentioning

confidence: 99%

Exploring ambient loading of citrus fruit into reefer containers for cooling during marine transport using computational fluid dynamics

Defraeye

Cronjé

Verboven

et al. 2015

Postharvest Biology and Technology

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“…7d. Dehghannya et al (2011) also showed that a large vent area for packages can improve the forced convection cooling of produce. This phenomenon accounts for the cross-sectional area of gas exchange being improved when the valve diameter is large; such an improvement reduces ventilation resistance and improves gas exchange efficiency.…”

Section: Gas Exchange Time Changing Exhaust Valve Locations Canmentioning

confidence: 98%

“…In this test, the results were compared with the results from the simulation. Temperature (Dehghannya et al, 2011;Delele et al, 2013a;Tutar et al, 2009) and velocity (Moureh et al, 2009) are common indexes for verification. In the present study, temperature and oxygen concentration variation were verified.…”

Section: Model Verification Ho Et Al (2011) Used 2-d and 3-d Modelsmentioning

confidence: 99%

Numerical Simulation of Gas Exchange in Fresh-keeping Transportation Containers with a Controlled Atmosphere

Lü

Wang

et al. 2016

FSTR

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“…The mathematical relationships are different than when air and product domain are seen as one domain; the simulation has to take the interaction in terms of mass and energy at the boundary between product and air into account. This way of modelling and simulation is common in several post-harvest food applications (such as Zou et al, 2006;Ferrua and Singh, 2009;Tutar et al, 2009;Page et al, 2009;Dehghannya et al, 2011;Delele et al, 2013).…”

Section: Notice Frommentioning

confidence: 99%

Modelling ventilated bulk storage of agromaterials: A review

Grubben

Keesman

2015

Computers and Electronics in Agriculture

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Mathematical modeling of airflow and heat transfer during forced convection cooling of produce considering various package vent areas

Cited by 72 publications

References 15 publications

Exploring ambient loading of citrus fruit into reefer containers for cooling during marine transport using computational fluid dynamics

Exploring ambient loading of citrus fruit into reefer containers for cooling during marine transport using computational fluid dynamics

Numerical Simulation of Gas Exchange in Fresh-keeping Transportation Containers with a Controlled Atmosphere

Modelling ventilated bulk storage of agromaterials: A review

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