A refrigerated truck refers to a closed van that is used to maintain the temperature of frozen or preserved goods. Refrigerated trucks are often used to transport frozen food (freezer trucks), dairy products (dairy trucks), vegetables, and fruits (fresh goods trucks), vaccine drugs (vaccine transporter). Many people have a misunderstanding that they believe the refrigerated trucks are used for refrigeration. In fact, this view is completely wrong, the refrigerated truck is not cold storage, the main function of the refrigeration unit is to preserve heat.
The refrigerated truck is not the same as cold storage. In the concept of many people, the refrigerating unit on the refrigerated truck can freeze or heat the goods loaded in the compartment to the required temperature at will. In fact, the refrigeration unit is used to remain the temperature of the goods, rather than reduce the temperature of the goods. It is a bit similar to the quilt used in selling cold drinks in the past time. The goods are wrapped to keep the temperature of cold drinks or ice cream. The refrigerated truck works when the inside temperature goes up through radiation, conduction, and convection, the heat will be taken away by the cold air blown out by the refrigeration unit to isolate the heat source from entering the cargo to remain the suitable temperature of the cargo.
If the cargo with too high or too low temperature is loaded into the compartment of the refrigerated truck, and then the refrigeration unit is set to the necessary transportation temperature of the cargo to be transported, it is desired to take a certain period of time to reduce or increase the temperature of the cargo to the necessary temperature.
The cold air blown by the refrigeration unit will change the temperature of the goods, and the moisture of the goods will be lost, which will cause the quality of the goods to change, then will lead to the deterioration of the quality of the goods, the shortening of the storage period, and even the corruption of the goods.
It is very possible that the fresh green beans you transport will be more "dry" and the weight will reduce a lot, causing some trouble. This is why refrigerated trucks generally go to cold storage to pull goods and they rarely go to the field to pull goods directly.
After knowing the role of refrigerated trucks, I hope that users of refrigerated trucks can use the trucks correctly to ensure the quality of the goods transported.
