Refrigerated car purchase to recognize the choice of three major components
The advantages and disadvantages of frozen and refrigerated cars and units are good or bad, and they are closely related to the technical capabilities of the professional chain of cold chain logistics. If the carriage is not up to standard, it will be difficult to guarantee the safety and quality of the transported food. So how to buy it? What are the main considerations? The refrigerated and refrigerated cars and units are mainly composed of three parts: the refrigerated truck chassis, the refrigerated car body and the refrigerated truck refrigeration unit. Therefore, we should consider these three aspects.
First, the choice of car chassis for refrigerated trucks
Car chassis is relatively easy to select. Because we can only choose the automobile chassis that meets the national emission standards in line with China's automobile sales announcement, regardless of the tonnage size, the domestic or imported automobile chassis is the same requirement. For the car chassis, the user can be based on their own economic strength. And personal preferences, whether you buy it yourself or ask the car manufacturer to buy it.
Second, the choice of refrigerated car body
The choice of the car is related to the specific cargo being transported. Different goods have different requirements for the car, so it is necessary to learn how to identify the advantages and disadvantages of the refrigerated car and the unit. For example, refrigerated trucks carrying fresh meat need to be customized on the car; refrigerated trucks that are distributed for the store are small in size, have many varieties, and need refrigerated trucks with multiple temperature zones; temperature requirements are different, and frequent loading and unloading requires multiple refrigerated trucks. , it is necessary to add side doors, anti-cold leaking curtains and other attachments; the thickness of the refrigerated compartments transporting ice cream is greater than the general refrigerated compartments for fresh-keeping and freezing. All of these, users can customize to the car factory according to specific needs.
Third, the choice of refrigeration unit refrigeration unit
1. According to the size of the refrigerated car body: optional independent unit or non-independent unit. Generally speaking, the car body of more than 6 meters is suitable for selecting an independent unit, and the size of the independent unit can be determined according to the length of the car body. For vehicles below 6 meters, non-independent units should be used. The temperature of the compartments can reach -20 °C.
2. According to the temperature requirements of the goods transported by the refrigerated truck: the cryogenic unit or the cold chain preservation unit can be selected. From the price point of view, it is expensive to be cold, and the fresh-keeping unit is relatively cheap. For the cheap fresh-keeping unit, the unit itself does not have the defrosting function, even if some fresh-keeping units claim to reach minus ten degrees, it is an exaggeration.
3. According to the requirements of refrigerated truck delivery: For example, if the refrigerated truck is used to distribute ice cream point by point in the city, then it is necessary to select the refrigerating refrigeration unit or the independent unit. Only the long-distance or long-distance point-to-point distribution in the city is suitable. Fan-type refrigeration unit.
4. According to the origin and brand of the refrigerator: imported or domestic brands can be used.
It is also necessary to tell everyone that regardless of domestic or imported units, it must be noted that the temperature sensor of the unit is installed in the return air position of the evaporator, because the temperature sensor of the unit is installed in the return air or exhaust position, the temperature The readings will differ by 5 °C.