Determination of reasonable ice amount in foam box of pasteurized milk under air logistics mode.

To determine the relationship between the ice amount of packing for transportation of pasteurized milk and the temperature in the foam box and the transportation time under a certain external temperature, and to obtain the appropriate ice amount data. Considering the influencing factors of foam box ice aviation logistics and the actual operation mode, the energy consumption model of foam box ice transportation was established, and the energy consumption balance process was analyzed. On this basis, the ice amount of foam box ice transportation was set as different standards, and the corresponding relationship between the logistics duration and the temperature in the foam box was studied under different external temperatures and 50%~20% ice amount. The relationship curve between the ice proportion and the low temperature time in the foam box, the arrival time of the lowest temperature in the box, and the transportation time under the appropriate temperature was made. Research suggests that the ice amount of 50% can meet all the usual external temperatures within 60 hours of transportation quality. The logistics duration is less than or equal to 24 hours, the recommended ice amount is about 20%. The logistics duration is about 36 hours, the recommended ice amount is about 30%. The logistics duration is about 48 hours, the recommended ice amount is not more than 40%.