Refrigerated trucks issued a dry sound, up to the cooling effect

Refrigerated trucks issued a dry sound, up to the cooling effect.

In fact, for this kind of problem we are often heard. We should note that when stacking the goods do not stack in front of the evaporator outlet too much cargo, otherwise it will hinder the flow of air, the obstruction above the cargo will lead to cold air short-circuit. A minimum distance of 220 mm must be maintained between the top of the cargo and the roof. Be sure to ensure that the height of the cargo load is not higher than the balance of the outlet height. If the front of the outlet blocked by the goods or too close to the goods, not only will affect the storage and transportation of goods temperature, but also affect the normal work of the refrigeration unit.

On the other hand, some of the defrost design of the refrigeration unit is defrosted with air induction.

When the goods and the outlet is too close, the car's refrigeration unit evaporator coil will quickly frost or ice, this time the air sensor system then operation, the unit will quickly enter the defrost state.

When the coil temperature rises to 9 degrees (design temperature), the defrosting is immediately terminated. So the refrigeration unit will appear the cycle of the above-mentioned operation, resulting in the body temperature drop does not come down to the phenomenon, to everyone's intuitive feeling is that the refrigeration unit frequently in the defrosting work, and the temperature inside the box was no significant cooling. (refrigerated truck dimension)

Basically because the cargo compartment load is too high, too many reasons for the frequent work of the cooling unit can drop the temperature of the compartment is not down.

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