Airflow and Thermal Behavior within Peaches Packaging Box Using Computational Fluid Dynamics - A Preliminary Study

Ilangovan, Adhiyaman; Silva, Pedro Dinho da; Gaspar, Pedro Dinis

doi:10.18502/keg.v5i6.7036

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…The boxes vary only in the size, position, and shape of the vent holes. This numerical study continues the analysis started in previous works [30][31][32][33][34] where the evaluation of different fruit packaging box designs was developed, leading to a set of best performance packaging boxes. This study presents the multi-parameter approach using transient CFD models of the three best different packaging boxes with different vent shape, size, and location to predicts the airflow and temperature distribution during the cooling phase.…”

Section: Introductionsupporting

confidence: 70%

Numerical Study of the Impact on Cooling Behaviour of Vent-Holes Design of Fruit Packaging Boxes

Curto¹,

Ilangovan²,

Gaspar³

et al. 2021

14th WCCM-ECCOMAS Congress

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Fruit packaging is highly impactful in temperature and humidity distribution for post-harvest fresh fruit cooling and conservation. It is also the most flexible part on fruit production and should be able to increase shelf-life by deterring adverse conditions. However, packaging thermal performance during cold storage where it is displayed to the internal airflow is influenced by the size and position of vent-holes. In this study airflow inside the fruit box and fruits thermal behaviour are evaluated in order to determine differences between three prototype package models. Models differ from each other by the holes' configuration and size. Furthermore, models' performance is compared to a commercially available box of similar dimensions. Experimental tests were carried out in three stacked boxes, equipped with temperature and humidity sensors, and placed inside a refrigeration chamber with forced air cooling. Packaging box CFD models of each prototype wall were developed to predict the airflow and heat transfer during storage in a refrigeration chamber. Models predictions were validated by experiments results. According with simulation results, all prototypes have better thermal performance than the commercial model. However, significant performance differences between prototype walls were found. Fewer, larger and strategically distributed vent-holes allow a better result in terms of temperature homogeneity inside the box and significant reduction in fruit cooling times.

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Section: Introductionsupporting

confidence: 70%

Numerical Study of the Impact on Cooling Behaviour of Vent-Holes Design of Fruit Packaging Boxes

Curto¹,

Ilangovan²,

Gaspar³

et al. 2021

14th WCCM-ECCOMAS Congress

View full text Add to dashboard Cite

show abstract

“…In this paper, a study of 3 packages with fruit models that replicate the properties of real fruits was performed. These three new packages were selected from prior numerical studies [19,20].…”

Section: Methodsmentioning

confidence: 99%

Experimental Study of Thermal Performance of Different Fruit Packaging Box Designs

et al. 2021

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Packaging was recently identified as an essential element in addressing the key challenge of sustainable food supply and is gaining interest among researchers. It is a central element in food quality preservation due to its role in heat and mass exchange with the external atmosphere, contributing to the preservation of food quality during storage and extending food shelf life. This work proposes three new packaging configurations with the same size but different geometry and ventilation hole sizes and geometry, that change the conditions in which the heat and mass exchange occurs, during either the cooling period of fruits, inside the cooling chamber, or during the period when the packaging is exposed to ambient conditions, outside the cooling chamber. For this purpose, packages with fruit models that replicate the properties of real fruit were subjected to a cooling process inside a cooling chamber for 8 h. Subsequently, during the heating phase, the packages were exposed to ambient conditions for 10 h. Thermal conditions were also monitored, both inside and outside the chamber. Additionally, for comparative purposes, the thermal behavior of commercial packaging was also evaluated for the same operating conditions in the cooling and heating phases. The results show that the new packages do not substantially promote the preservation of fruits in the cooling phase, but in the heating phase, they ensure an extension of the period with proper thermal conditions of up to 50% in relation to the conventional packaging. This result is particularly important since the heating phase, in which fruits are outside the storage chamber, is the period with the greatest impact on the fruits’ useful life.

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“…This prediction shows that the numerical results are consistent with the experimental work and that slight discrepancies are acceptable with the different parameters controlling the simulation and experiment. Some research work [5,28,[31][32][33] suggested these differences are admissible. Furthermore, to have more insight into the thermal performance within the packaging box, the temperature of the fruit model in each packaging box is studied, and the results are compared with the experimental data, as shown in Figure 8.…”

Section: Temperature Distribution Within Different Packaging Box Configurationmentioning

confidence: 99%

Section: Temperature Distribution Within Different Packaging Box Configurationmentioning

confidence: 99%

CFD Modelling of the Thermal Performance of Fruit Packaging Boxes—Influence of Vent-Holes Design

et al. 2021

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The shelf life of perishable products depends mainly on the conservation of air temperature. Packaging boxes are usually used to accommodate food products during cold storage and transport and/or display. The design of the vent-holes of the packaging box must promote cold airflow and remove the field heat of the produce after harvest at a short time. This study describes the influence of the vent-holes design and its performance during cold storage. The cooling performance of the different packaging boxes is evaluated experimentally and numerically using Computational Fluid Dynamics (CFD). Three new packaging box configurations with the same size but different vent-holes design (size, shape and position) and a reference box are modelled. The transient three-dimensional CFD model predicts the airflow pattern and temperature distribution within the different packaging boxes. The best thermal performance packaging achieved a fruit model temperature 1.5 K to 5 K lower than the other configurations at the end of 8 h of cooling. These predictions allow the development of new packaging box designs that promote the shelf-life extension of perishable products.

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Airflow and Thermal Behavior within Peaches Packaging Box Using Computational Fluid Dynamics - A Preliminary Study

Cited by 4 publications

References 12 publications

Numerical Study of the Impact on Cooling Behaviour of Vent-Holes Design of Fruit Packaging Boxes

Numerical Study of the Impact on Cooling Behaviour of Vent-Holes Design of Fruit Packaging Boxes

Experimental Study of Thermal Performance of Different Fruit Packaging Box Designs

CFD Modelling of the Thermal Performance of Fruit Packaging Boxes—Influence of Vent-Holes Design

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