![Journal of IAR](/images/mag-vest.jpg)
On the necessity of improving approaches to the selection of refrigerator vehicles for intracity food transportation
![Journal of IAR](/images/mag-vest.jpg)
Annotation
The analysis of the requirements for specialized refrigerated vehicles used for transportation of perishable foods is done. The main causes of temperature disturbances during the operation of specialized refrigerated trucks in intracity environments are formulated. The purpose of the work is to experimentally prove the need to take into account the additional requirements for recovering the temperature regime of transportation as quickly as possible after unloading some of the perishable goods in the case of intracity transportation, in addition to standard requirements, at selecting the nominal power of a refrigeration unit ensuring the specified working temperature in the insulated body. During the experimental tests of the refrigerated truck on the Hyndai HD78 chassis the temperatures of ambient air, the air in the body, and the surface of the product were recorded depending on changes in the conditions of international and intracity transportation. The test results showed that the same refrigerated vehicle that meets the criteria of its use in international transportation may not meet the ones of technical regulations for maintaining the temperature regimes of cooled perishable goods transportation during intracity transportation. It has been proposed to evaluate the efficiency of the refrigeration unit by the time it reaches the specified temperature regime after a brief opening of the body door, taking into account the type of product being transported and the requirements for the temperature regimes of its storage and transportation. The values of the safety factor for calculating the capacity of refrigerating equipment taking into account the effect of various types of heat influx, characteristic for the specific conditions of intracity transportation, on the performance of refrigerated trucks to maintain the temperature regimes for transportation of various refrigerated perishable foodstuffs are given. The choice of refrigerated trucks for intracity transportation according to the classification proposed will allow maintaining the original quality of food products and reducing losses during its subsequent storage and sale.
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