The Main Components of a Refrigeration Unit

The Main Components of a Refrigeration System are very important when you choose the right refrigerated units for your truck.

A Reefer as they are known, are vans and trucks that include a refrigeration unit in the cargo area to maintain specific climates for temperature-sensitive loads. They are available in Nose mount or Rooftop system configuration. To find out more about the type of system that’s ideal for your business and vehicle, visit our website:

Continue reading to learn about the main components of a Refrigeration System


Compression is the first step in the refrigeration cycle, and a compressor is a piece of equipment that increases the pressure of the working gas. Refrigerant enters the compressor as low-pressure, low-temperature gas, and leaves the compressor as a high-pressure, high-temperature gas.


Rooftop or Nose Mounted receives a high temperature.
High-pressure refrigerant from the compressor and through the process of heat exchange, assisted by the condenser fan motor, changes the state of the refrigerant to a high-temperature liquid.
This change of state takes place when the air circulating around the tubing and fins of the condenser coil, cools the refrigerant.


This part is located in the cargo area of the vehicle.
The liquid refrigerant entering the evaporator via the expansion valve is thermostatically controlled to change its state from a liquid to a low-pressure, low-temperature gas.
The refrigerant now absorbs the heat from the cargo area by passing air over the evaporator coil assisted by the evaporator fan motor. At this point, the refrigerant is referred to as a “saturated mixture” in the evaporator coil. When this process is complete, the gas returns to the compressor as a low-temperature, low-pressure gas, and this entire process is repeated until the desired temperature is reached.


Refrigeration has had a large impact on the industry, lifestyle, agriculture, and settlement patterns. In most developed countries, cities are heavily dependent upon refrigeration in supermarkets, in order to obtain their food for daily consumption.

So if you want to know more about refrigerated units and solutions, email us:

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