There are more more friends using Chongqing refrigerated trucks. In the process of using refrigerated trucks, we should pay attention to several aspects. Let's talk about the precautions of refrigerated trucks in Changhui refrigerated truck
1. Set temperature of refrigerator car
Set the thermostat to the required temperature, pre cool the car for 1.5 hours to exhaust the heat captured in the tree trunk; the loading refrigeration unit will be closed loaded quickly. When loading, the car must be pre cooled pre heated. Because the vehicle is parked outdoors, the temperature of the car is usually the ambient temperature. If the delivery temperature of the goods is the ambient temperature, the goods enter the compartment, the ambient temperature will affect the delivery temperature of the goods, resulting in changes in the quality of the goods. Therefore, you must precool the compartment to the required temperature before loading. However, the refrigeration unit must be shut down when loading (unloading). Many people don't turn off the refrigeration unit when loading unloading goods. In fact, this is a very wrong operation.
The reason is: when we cool the car, if we don't close it, open the door, because the evaporator fan of the fan is working, the fan is positive pressure, the negative pressure at the back makes the air blow out the air at the top, the hot air at the bottom will be inhaled quickly, causing the temperature inside the car to rise rapidly; If the air flow stops the air pressure inside outside the vehicle stops after loading unloading, the speed of external hot air entering the vehicle is relatively slow.
2. The goods must be precooled to the required temperature, the temperature of the goods shall be checked during shipment; the refrigeration unit is used to maintain the temperature of the goods, rather than reduce the temperature of the goods. Many refrigerators have a wrong idea that the refrigerators in refrigerators are free to put goods into the freezer heat them to the desired temperature. Therefore, the goods without transportation temperature requirements enter the compartment, then set the cooling unit to the required transportation temperature, reduce the temperature of the goods to the required temperature after a certain period of time. On the contrary, only does the temperature of the goods decrease ( increase), but also the goods are damaged deteriorated. Because the refrigeration unit of the refrigerator car is to reduce the temperature of the goods, but to maintain the temperature of the goods, it is just like we used to sell cold drinks, which is wrapped by quilts goods. When the external cold (heat) enters the envelope through radiation, conduction convection, the cold air blown out by the refrigeration unit will take away isolate the heat to enter the cargo.
The demand for refrigerated vehicles is more more extensive, the demand for refrigerated vehicles is also higher higher, both the insulation box the refrigerator have requirements.
The structure of the refrigerator car is composed of the parts of the chassis of the special car, polyurethane materials, glass fiber reinforced plastics, color steel plates, stainless steel other parts, the refrigeration unit the internal temperature recorder. Vehicle requirements, such as meat hook car, meat hook can be installed, middle waist, aluminum alloy rail, ventilation slot other options.
The refrigerator car has the following characteristics:
1. Tightness. Refrigerated containers need to be tightly sealed to reduce heat exchange with the outside world ensure that the refrigerator is kept at a low temperature.
2. Refrigeration. Install refrigeration equipment connected to the container, provide stable refrigeration flow to ensure that the container temperature is within the allowable range of the goods.
3. Portability. Generally, refrigerated trucks are used for long-term storage of goods. Although there are refrigeration equipment, they still need to reach their destination faster.
4. heat insulation. Refrigerated containers are similar to containers, but are made of materials with better insulation reduced heat exchange.