Enhanced airflow in a refrigerated container by improving the refrigeration unit design

Senguttuvan, Santhosh; Youn, Jun-Suk; Park, Jaehyun; Lee, Jinkee; Kim, Sung-Min

doi:10.1016/j.ijrefrig.2020.08.019

Cited by 12 publications

(2 citation statements)

References 29 publications

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“…The reason is that a lot of the actionable metrics for stakeholders to base their decisions on are just not available from the measured data in the supply chains. The digital twin approach presented in this study can potentially steer, in realtime, the hygrothermal environment in a cargo driven by real-time sensor data 104 . The main bottleneck in this workflow is an integration of digital twin models into sensor platforms and providing the stakeholder timeously with simple and easy-tointerpret actionable metrics on the fruit quality of their shipments.…”

Section: Discussion and Outlook Physics-based Digital Twins To Upcycl...mentioning

confidence: 99%

Digital twins enable the quantification of the trade-offs in maintaining citrus quality and marketability in the refrigerated supply chain

et al. 2022

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Supply chains of fresh fruit must maintain a very narrow window of hygrothermal conditions after harvest. Any excursions outside this range can markedly lower the consumer acceptability of the fruit. However, the loss in fruit quality and marketability largely remains invisible to stakeholders throughout the supply chain. Here, we developed a physics-based digital twin of citrus fruit to pinpoint when, why, and to what extent are fruit quality and marketability reduced. Sensor data on 47 commercial shipments are thereby translated into actionable metrics for supply chain stakeholders by mapping the variability using principal component analysis. We unveiled a large spread (between 3% and 60%) in the shipments for different metrics of quality and marketability. Half of the shipments currently lie outside the ideal trade-off range between maintaining quality, killing fruit fly larvae, and avoiding chilling injury. The digital twin technology opens the possibility to obtain the real-time coupling with sensor data to monitor food quality and marketability.

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Section: Discussion and Outlook Physics-based Digital Twins To Upcycl...mentioning

confidence: 99%

Digital twins enable the quantification of the trade-offs in maintaining citrus quality and marketability in the refrigerated supply chain

et al. 2022

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“…Through comparison with the experimental results at the Hakata port in Japan, it confirmed the effectiveness of the simulation method. Senguttuvan et al [24] numerically analyzed the airflow pattern in a cold chain shipping container using several design models of the refrigeration unit, and proposed an improved refrigeration unit design to enhance the airflow distribution inside the cold chain shipping container. By changing the effective size and design parameters of the refrigeration unit, it considered 15 different models, which play important roles in the airflow patterns within a cold chain shipping container.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Influencing Factors to the Thermal Insulation Performance of Cold Chain Shipping Containers and Analysis of Internal Flow Field

He¹,

Wang²,

Liu³

2022

IJHT

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Cold chain transportation can prolong the shelf lives of products and reduce losses, so based on the practical applications, it is necessary to numerically simulate the flow field and thermal insulation performance of cold chain shipping containers. Existing studies have achieved optimization by changing the thermal performance and thermal insulation mechanisms of the thermal insulation materials of the containers, but little research has been done on the numerical simulation of the factors affecting the thermal insulation performance of cold chain shipping containers. Therefore, this paper conducts the numerical simulation of the influencing factors to the thermal insulation performance of cold chain shipping container and studies the internal flow field. The structure and air supply diagrams of a cold chain shipping container were given, the thermal insulation performance of the thermal insulation sandwich panels in different surface layers and core layers of the cold chain shipping container was calculated and analyzed, and thermal inertia and heat transfer attenuation performance of the sandwich panels during the unsteady heat transfer process of the container were analyzed. The basic governing equations and assumptions were established for the internal flow field of the cold chain shipping container, and the distribution of the internal flow field was explored. With the impact of the viscosity of air molecules in the cold chain shipping container further ignored, the flow was regarded to be turbulent, and the internal flow field was simulated based on the turbulence-dissipation model. The experimental results were used to analyze the thermal insulation performance of cold chain shipping containers, and analysis results of the flow field where the cold chain shipping containers were stacked in different ways were given.

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Decision-making analysis of air supply strategies for high rack cold stores

Liu

Guan³

et al. 2022

Applied Thermal Engineering

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Enhanced airflow in a refrigerated container by improving the refrigeration unit design

Cited by 12 publications

References 29 publications

Digital twins enable the quantification of the trade-offs in maintaining citrus quality and marketability in the refrigerated supply chain

Digital twins enable the quantification of the trade-offs in maintaining citrus quality and marketability in the refrigerated supply chain

Numerical Simulation of Influencing Factors to the Thermal Insulation Performance of Cold Chain Shipping Containers and Analysis of Internal Flow Field

Decision-making analysis of air supply strategies for high rack cold stores

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