● Selection of refrigerated trucks

Refrigerated trucks are key equipment in an important link of low-temperature cold chain logistics. Refrigerated trucks work reliably and perform stably during refrigerated transportation, which is the key to ensuring the safety of perishable and fresh food during transportation. Road transport refrigerated trucks usually consist of three parts: a car chassis, an insulated body, and a refrigeration unit. Therefore, the selection of refrigerated trucks should also start with these three parts.

(I) Selection of refrigerated truck chassis:

The selection of a car chassis is relatively easy. You can choose a car chassis that meets the national environmental standards and meets the national standards in accordance with the national automobile sales announcement. Regardless of the tonnage, domestic or imported car chassis, the same requirements apply to the car chassis. For the car chassis, it is the same whether the customer purchases it by himself or entrusts the body manufacturer to purchase it.

(II) Selection of refrigerated truck body:

The choice of body is related to the specific goods to be transported. Different goods have different requirements for the body. For example, refrigerated trucks that transport fresh meat need to be customized with hooks on the body; refrigerated trucks that deliver to stores have small batches and many varieties, and require multi-temperature refrigerated trucks; different temperature requirements and frequent loading and unloading require multi-door refrigerated trucks. For all these, users can customize them from the body factory according to specific needs.

SR1100 truck Refrigeration Units

(III) Selection of refrigeration units for refrigerated trucks:

(1) According to the size of the refrigerated truck body: independent units or non-independent units can be selected. Generally speaking, independent units are suitable for bodies over 6 meters long, and the size of the independent unit can be determined according to the length of the body. Non-independent units are suitable for bodies under 6 meters long, and the body temperature here refers to -20℃.

(2) According to the temperature requirements of the goods transported by the refrigerated truck: deep freezing units or fresh-keeping units can be selected. In terms of price, deep freezing is more expensive, while fresh-keeping units are relatively cheap. For cheap fresh-keeping units, the unit itself does not have a defrosting function. Even if some fresh-keeping units claim to be able to reach minus ten degrees, it is an exaggeration.

(3) Choose according to the requirements of refrigerated truck delivery: For example, if a refrigerated truck is used to deliver ice cream point by point in the city, then you must choose a cold storage refrigeration unit or an independent unit. Only long-distance or long-distance point-to-point delivery in the city is suitable for a fan refrigeration unit.

(4) According to the origin and brand of the refrigeration machine: You can choose imported or domestic brands.

Another thing to tell you is that no matter whether it is a domestic or imported unit, you must pay attention to whether the temperature sensor of the unit can be installed at the return air position of the evaporator, because the temperature reading will differ by 5°C when the temperature sensor of the unit is installed at the return air or exhaust air position.

● Refrigerated truck maintenance

About the use of refrigerated truck precautions:

1. Pay attention to pre-cooling the goods and cold storage before loading

The transportation equipment is to transport while maintaining the temperature of the loaded goods. The temperature of the goods cannot be lowered or frozen in the cold storage. If the temperature of the load is very high or the cold storage temperature is very high, it is difficult to reduce it to the appropriate temperature. Therefore, please be sure to pre-cool the goods and the cold storage in advance to reduce them to the appropriate transportation temperature.

2. Allow the cold air to circulate smoothly between the goods

To keep the temperature in the cold storage uniform, you must pay full attention to the stacking of the goods. In particular, you must not stack the goods on the roof or stack the goods at the outlet or inlet of the cold air.

3. Quickly move the goods in and out

When the cold storage door is open, the outside airflow will cause the temperature in the storage to rise. Please move the goods in and out as soon as possible. In addition, please stop the operation of the refrigeration unit when carrying goods.

4. Pay special attention when loading vegetables and fruits

Since vegetables and fruits will generate respiratory heat, if the circulation of cold air is not good, the temperature in the center of the car will rise, thus affecting the quality of the goods. In addition, the upper goods close to the cold air outlet will be frostbitten by the cold air, so please cover them with a cover cloth in advance to protect them.

5. Keep the cold storage clean and hygienic

Food must be kept clean when transporting. If salt, fat, etc. adhere to the inner wall or the sealing strip of the door, it will not only be unhygienic, but will also corrode the compartment and shorten the life of the refrigerated truck.