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Refrigerated semi-trailer is a type of semi-trailer designed for transporting goods that require temperature and humidity control. During the production, processing, storage, and distribution of goods, different environmental conditions can affect the quality and safety of the goods, such as bacteria, molds, and decay. Refrigerated semi-trailers use a combination of insulation layers and refrigeration equipment to control the temperature and humidity inside the cargo compartment, preventing these problems from occurring.

High-density insulation materials such as polyurethane foam and sandwich panels are typically used for the insulation layer. These insulation materials have excellent thermal insulation properties, reducing heat exchange between the cargo compartment and the external environment, ensuring temperature stability of the goods.

The refrigeration equipment usually uses a refrigerant circulation system to cool the air in the cargo compartment or directly inject liquid refrigerant to cool it. This refrigerant can lower the temperature inside the cargo compartment to the required range. Depending on the requirements of different types of goods, refrigerated vehicles can also adjust the temperature and humidity to ensure the quality and safety of the goods.

In addition, refrigerated semi-trailers are equipped with cargo fixing devices, lighting, electrical systems, and other accessories. The cargo fixing device prevents the cargo from sliding or tilting during transportation, protecting the integrity of the cargo. Lighting and electrical systems provide necessary auxiliary functions such as temperature control and lighting.

In summary, refrigerated semi-trailers play an important role in modern logistics and supply chains. Through the efficient combination of insulation layers and refrigeration equipment, they control environmental factors such as temperature and humidity to ensure the quality and safety of goods