Experimental investigation of air flow field and cooling heterogeneity in a refrigerated room

Bishnoi, Rajkumar; Aharwal, K. R.

doi:10.1016/j.jestch.2020.05.004

Cited by 13 publications

(9 citation statements)

References 23 publications

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“…The results highlighted the issue of temperature heterogeneity reportedly found in a cold room (Bishnoi & Aharwal, 2020;Duret, Hoang, Flick, & Laguerre, 2014) and within a package (Gruyters, et al, 2018;O'Sullivan, et al, 2017;Wu, Cronjé, Verboven, & Defraeye, 2019).…”

Section: Time-temperature Evolutionmentioning

confidence: 57%

Temperature control in a horticultural produce supply chain in Thailand and its influence on product quality

et al. 2022

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Section: Time-temperature Evolutionmentioning

confidence: 57%

Temperature control in a horticultural produce supply chain in Thailand and its influence on product quality

et al. 2022

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“…The heterogeneity of the cooling increases the loss of humidity from the surface of the fruits, which can vary up to 50% between the fruits located in the warmer and cooler regions of the package or pallet (Bishnoi & Aharwal, 2020). Consequently, there are physiological deteriorations, such as withering; reduced stiffness, turgidity, and juiciness; and a decrease in shelf life.…”

Section: Resultsmentioning

confidence: 99%

Precooling of table grapes on a commercial scale as function of packaging

Miranda

Santos

Turco

et al. 2021

Rev. bras. eng. agríc. ambient.

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Although precooling by forced air is widely used to remove field heat from fresh table grapes, there is no knowledge about its use and efficiency. Factors influencing the process include temperature and relative air humidity, amount and initial temperature of the fruits, air velocity, and packaging. The objective of this study was to evaluate the cooling effect and efficiency of forced air cooling on table grapes in two types of packages. The experimental method used randomized blocks, in a 2 × 3 factorials, corresponding to two package types (polystyrene and cardboard) and three heights on the pallet - lower, middle, and upper - with four replicates. The temperature gradient in the direction of the airflow was evaluated. There was heterogeneity in cooling, both vertically and horizontally, on the pallets with a central heat zone for both the directions. None of the packages was suitable for fast cooling as both types of packages showed a cooling time of 15.5 h; moreover, relative humidity values were far below the ideal value for table grapes.

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“…Bishnoi and Aharwal (2019) did a study on the effects of an airflow plane in the room and concluded that the airflow and temperature distribution impacted on the optimization [4].…”

Section: Introductionmentioning

confidence: 99%

Return Air Grille Position in a Cleanroom for Medicinal Packaging Using CFD Method

Lestari,

Permatasari

2024

J. Phys.: Conf. Ser.

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A cleanroom is a highly controlled environment; therefore, air quality is of significant concern, and specific physical and microbiological requirements must meet the standard. In addition to the number of particles, another critical parameter in a cleanroom is temperature. USP (The United States Pharmacopeia) 797 recommends that the temperature of a cleanroom be around 20 °C. Air quality is achieved through several parameters and components, such as using a high-efficiency particulate air filter (HEPA), the amount of fresh air entering the room, temperature, pressure difference, and airflow direction. In this study, the cooling load of the room for the filling and sealing process was calculated, and the airflow and temperature distribution patterns between two parameters of the return air grille (RAG) position were compared using Computational Fluid Dynamics (CFD). The first parameter, RAG 1, was placed above the ceiling, while the second parameter, RAG 2, was set on the sidewall. Based on the results of the study, it was found that the heat load generated from the room was 6.99 kW with a cooling coil capacity amounting to 10.77 kW. Moreover, the supply airflow rate was 371.66 l/s. Based on the results of the simulation modelling, it was found that the RAG positioned on the sidewall was more ideal than the RAG positioned above the ceiling since the temperature was more evenly distributed in the room where the RAG was positioned on the sidewall.

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Experimental investigation of air flow field and cooling heterogeneity in a refrigerated room

Cited by 13 publications

References 23 publications

Temperature control in a horticultural produce supply chain in Thailand and its influence on product quality

Temperature control in a horticultural produce supply chain in Thailand and its influence on product quality

Precooling of table grapes on a commercial scale as function of packaging

Return Air Grille Position in a Cleanroom for Medicinal Packaging Using CFD Method

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