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Simulation of Cold Treatment during a Cargo Shipment of Citrus Fruit

机译：柑桔货运过程中冷处理的模拟

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摘要

The Italian orange fruit export development outside EU countries has required commercial agreements regarding the restriction of parasites spread especially Mediterranean fruit fly. The correct use of cold treatment during the shipment is used to satisfy this requirement. This paper reports the results of a simulated refrigerated transport of citrus fruits (14600 kg of 'Tarocco' oranges) in a 40ft refrigerated container. Temperatures have been monitored inside the refrigerated container in differentpositions of the load (in the air, in the pallet and in the fruits) using 40 innovative direct-to-digital temperature probes. Moreover, an innovative package (with an increased vented surface) was compared to the standard boxes. Results show that the difference of average temperature between the temperature probes in head space was less than 0.5°C. Temperature peaks showed the on/off cycle of the automatic defrosting system. Though temperature probes placed on the floor showed a good homogeneity, the air temperature reached a minimum level of about -0.8°C, near the cold air outlet, which is considered too low for the oranges cold storage. The vented boxes allowed a more rapid cooling, lowering the overall thermal resistance of fruit boxes, and so making fruits mostly affected by the cold air temperature near the air cooler outlet.
机译：欧盟国家以外的意大利橙色水果出口发展需要有关限制寄生虫传播（尤其是地中海果蝇）的商业协议。在装运过程中正确使用冷处理可满足此要求。本文报告了在40英尺长的冷藏容器中对柑橘类水果（14600公斤的“塔罗科”橙子）进行模拟冷藏运输的结果。使用40个创新的直接数字温度探头，可以在冷藏柜内不同位置（空气，托盘和水果中）的温度下监控温度。此外，将创新的包装（具有增加的通风表面）与标准包装箱进行了比较。结果表明，顶部空间中温度探针之间的平均温度差小于0.5°C。温度峰值显示自动除霜系统的开/关周期。尽管放置在地板上的温度探头显示出良好的均匀性，但在冷气出口附近，空气温度达到了约-0.8°C的最低水平，对于橙子的冷藏来说，这太低了。通风的盒子可以更快地冷却，降低了水果盒的整体热阻，因此使水果主要受到空气冷却器出口附近的冷空气温度的影响。

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