The quality of a refrigerated truck is determined by three parts: the chassis, the car body and the refrigeration unit. This is where the choice of refrigeration units is a top priority. Users who know about refrigerated trucks should have heard about independent and non-independent refrigeration units. How do these two types of refrigeration units differentiate? To this end Xiao Bian finds information on the Internet, consults the personnel of the refrigerated truck manufacturers, and organizes the following contents so that everyone can learn.
Which is more suitable for your independent/non-independent refrigeration unit?
â— What is the independent refrigeration unit and non-independent refrigeration unit
Independent chiller units : Independent and non-independent chillers are classified according to the source of power. Independent chillers refer to chillers that have separate power sources. The chillers themselves have independent power sources.
In general, independent refrigeration units are of one-piece structure but also have a modified split-type structure (this structure is generally hoisted on the girder of the car). The unit itself has an engine and a generator for providing power and electric energy to the refrigeration system. Device. Can work independently, not limited by the working status of the car engine.
Non-independent refrigeration unit: As the name implies, it is a refrigeration unit that cannot work independently. This kind of unit does not have a power unit, and it must rely on the automobile engine to drive the compressor.
Non-freezing refrigeration unit
Non-independent refrigeration units can also be divided into one-piece and split-type structures. The split structure includes three types: condenser front, condenser top and condenser bottom (bottom or concealed); however, the condenser front structure is the most common structure inside a split independent refrigeration unit. form.
â— Advantages and disadvantages of independent and non-independent refrigeration units
Independent refrigeration unit
Advantages: The advantages of the independent refrigeration unit are stable and reliable, which is also what refrigerator cars need most. Since the independent refrigeration unit has a separate power output source, the refrigerator can still work when the refrigerated vehicle is out of flame or when there is an engine failure in the refrigerated vehicle, so as to ensure that the cargo inside the refrigerated compartment does not deteriorate.
Integrated independent refrigeration unit
Disadvantages: The disadvantage of an independent refrigeration unit is that it is expensive and maintenance is more complex than a non-independent refrigeration unit. Since more power systems are more complex in maintaining and maintaining independent chillers than non-independent chillers, independent chillers are technically more complex and more expensive.
Non-independent refrigeration unit
Advantages: The advantages of non-independent refrigeration units are low price, simple structure, easy maintenance and maintenance.
Disadvantages: The disadvantage of a non-independent refrigeration unit is that it relies too much on the power source of the refrigerator car. When the refrigerator car engine stops working, the non-freezing refrigeration unit loses its power support, the cooling system stops working, and if the car is turned off, frequently open the car door. Leaving a large amount of air-conditioning in the car's cabinet will cause the temperature in the cabin to rise, or the refrigerator will stop cooling in the event of a car failure (engine failure) and the cargo in the compartment will be subject to loss.
â— The choice of independent refrigeration units and non-independent refrigeration units
From the price point of view: the price difference between the non-independent chiller unit and the independent chiller unit is more than tens of thousands of yuan, the budget is relatively abundant, and the temperature requirement in the vehicle compartment is not very high (the required temperature is at least minus 10 degrees below). It is better to use a freestanding proposal.
From the length of the transport distance: In the short-distance distribution within the city or between districts and counties, the use of non-independent units is recommended. Not only the procurement cost is lower, but even if a failure occurs, the maintenance is easy; for long-distance transportation, it is recommended to use a stand-alone refrigeration unit because Even if the car engine stops working during long-distance transportation, the chiller can still be normally cooled to ensure the safety of the transported items.
From the model to be used: In general, light trucks with a body size of less than 7 meters are recommended. Non-independent units are recommended. Trucks with a 7-meter-plus truck or semi-trailer are better equipped with free-standing units.
â— Postscript:
There is a saying that is very good, not the best, only the best for you. Independent refrigeration units have obvious advantages in terms of stability and reliability, but their price is high. Non-independent refrigeration units are simple and inexpensive to maintain. Each has its own advantages and disadvantages. When users purchase, they must comprehensively choose from various aspects. No one who is absolutely better than the refrigeration unit, only the best for their own transport environment.
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