The use of refrigerated containers continues to increase rapidly in line with global trade, this kind of container is commonly used to deliver perishable cargo from producers to consumers over great distances, even between continents. To avoid perishable goods from damages, the temperature inside refrigerated containers was controlled and maintained to keep the cooling performance. The purpose of this study is to investigate the effect of variation inlet velocity on the cooling speed inside a refrigerated container. This study was conducted through a computational fluid dynamic simulation validated with experimental results. The simulation was carried out on the variations of inlet velocity based on low-speed fan mode at 4 m/s equal to 32 circulations/hour, and high-speed fan mode at 10 m/s equal to 80 circulations/hour. The results of the simulation show that the greater the inlet fan speed, the faster the cooling speed. The finding of this study is the cooling speed time of high cube refrigerated container with the low-speed fan is 28 minutes and the high-speed fan is 40 minutes.
The use of refrigerated containers plays an important role in perishable food transportation. The refrigerated container functions as a carrier that keeps the object’s temperature fresh and even below freezing point. The distribution of air flow in the container is very important to ensure in maintaining the setting temperature. The aim of this paper is to study the inlet air velocity on the refrigerated container by simulation model. The analysis was carried out by comparing two geometric models of the container floor in the empty load condition, namely the flat floor and the T-bar floor. From the simulation results, the average inlet velocity of the refrigerated container with the T-Bar floor has a higher velocity than the flat floor. In this case, the airflow circulation on the refrigerated container of the T-bar floor and flat flow around 525 m3 h−1 and 314 m3 h−1, respectively. From this case study, it is found that the use of T-bar floors can increase airflow circulation approximately 26%.
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