Isuzu refrigerated truck

Isuzu refrigerated cargo van is a closed van transport vehicle used to transport frozen or fresh goods. It is a special transport vehicle equipped with a refrigeration system of a refrigeration unit and a polyurethane insulated compartment. Refrigeration systems include components such as compressors, condensers, expansion valves, and evaporators. The following is a detailed introduction to the principle of Isuzu refrigerated cargo van refrigeration.

1. Compressor:

In the refrigeration system of Isuzu chiller freezer truck, the compressor is one of the most critical components. The function of the compressor is to convert low-temperature and low-pressure gas into high-temperature and high-pressure gas. When air is compressed, the contact between its molecules increases, causing the kinetic energy of the gas molecules to increase and generate heat.

2. Condenser:

After the compressor compresses the gas and heats it up, it enters the condenser. The condenser is located at the rear of the refrigerated truck, and its main function is to cool high-temperature and high-pressure gas into high-temperature and high-pressure liquid. The condenser usually consists of a set of metal pipes that dissipate heat through a radiator, cooling the gas.

3. Expansion valve:

The high temperature and high pressure liquid in the condenser flows into the evaporator through the expansion valve. The function of the expansion valve is to reduce the pressure of the liquid and turn it into a low-temperature and low-pressure liquid. The expansion valve system usually consists of a pressure regulating valve and a throttle valve, and regulates the refrigerant flow by controlling the opening of the valve.

4. Evaporator:

The evaporator is the core part of the Isuzu refrigerated truck cargo refrigeration system. After the low-temperature and low-pressure liquid refrigerant enters the evaporator, it is quickly converted into gas under low pressure. During this process, the surrounding heat will be absorbed, causing the ambient temperature around the evaporator to decrease, thereby achieving the cooling effect.

5.Refrigerant:

Refrigerated vehicles typically use refrigerants to complete the refrigeration process. Refrigerant is a special substance with a low boiling point and high latent heat value. Commonly used refrigerants include Freon (such as R134a, R404a, etc.). The refrigerant circulates in the refrigeration system and absorbs and releases heat through phase changes between gaseous and liquid states.

In the refrigeration system of the Isuzu refrigerated cargo van, the circulating flow of refrigerant is achieved through the work of the compressor. The compressor compresses the low-temperature and low-pressure gas and then sends it to the condenser. In the condenser, the gas is cooled by the radiator and converted into a liquid with high temperature and high pressure. Then, the high-temperature and high-pressure liquid flows into the evaporator through the expansion valve. The refrigerant in the evaporator is quickly converted into gas under a low-pressure state, absorbing heat from the surrounding environment to achieve the refrigeration effect. Then, the refrigerant enters the compressor again and the cycle repeats.