Refrigerated truck manufacturing standards classify refrigerated trucks according to the temperature that can be reached inside the compartment
The new national standard "Safety Requirements and Test Methods for Road Transport, Food and Biological Products Refrigerated Trucks" (standard number: GB 29753-2013) will be implemented on July 1, 2015. The new national standard classifies refrigerated trucks. This classification is based on the temperature that can be reached and maintained in the refrigerated compartment ...
The new national standard classifies refrigerated trucks . This classification is based on the temperature that can be reached and maintained in the refrigerated compartment to ensure different uses and requirements for the transportation and safety of the cargo. This is the first time in China's refrigerated truck manufacturing standards to classify refrigerated trucks according to the temperature that can be reached inside the compartment. The refrigerated trucks are classified into eight levels from A to H.
When refrigerated trucks transporting perishable food, when the ambient temperature is 30 ° C, they are divided into six categories according to the temperature range maintained by the average temperature in the refrigerated truck. Refrigerated trucks transporting biological products, when the ambient temperature is 30 ° C, are divided into two categories according to the temperature range maintained by the average temperature in the refrigerated truck compartment. This classification method is basically based on the temperature requirements of the cargo.
Perishable foods that are often transported generally fall into the following categories:
The first category is frozen foods, such as frozen meats, aquatic products, quick-frozen foods, and so on. These foods generally require storage temperatures below -18 ° C, and can be stored for months to ten months. During the transportation of these foods in hours, it is only necessary to set the set temperature in the compartment to -18 ° C, and there is no need to strictly control the accuracy of temperature fluctuations. Such foods should be transported by F-class refrigerated trucks.
The second category is refrigerated food, such as cold meat, aquatic products, poultry eggs, and so on. The transportation temperature requirement for this type of food is to ensure that the food does not freeze, the lower the temperature, the better, that is, close to 0 ° C or lower. This type of food is required to be transported in refrigerated trucks of D, E, F grades. Some canned foods require a transport temperature of about -5 ° C, and are transported in refrigerated E and F-class trucks.
The third category is vegetables and fruits. The transportation of this kind of food is more complicated in refrigerated transportation. First, the temperature requirements of various vegetables or fruits are different; second, many vegetables or fruits have higher requirements for temperature fluctuations, and must not deviate from the set temperature; third, because vegetables and fruits still have to breathe after picking, they will Breathing heat is generated, so the refrigerated truck refrigeration unit is required to provide more cooling capacity. In addition, these foods also require relative humidity. Therefore, although refrigerated trucks of all levels from A to F can in principle be used for the transportation of vegetables and fruits, the carrier's technology and experience are very important.
The United States Department of Agriculture (USDA) has published a booklet, "Protection of Perishable Foods in Automobile Transportation," detailing various methods of transporting perishable foods.
Biological products are mainly used in medical treatment, and are basically divided into two categories according to storage temperature. One type requires temperature of 2 ° C-8 ° C, such as blood, some vaccines, etc. This type of cargo also requires high accuracy for temperature fluctuations. Another type requires a temperature of -20 ° C, such as plasma. Therefore, refrigerated trucks corresponding to biological products are also divided into two categories accordingly.