Why Is the Cooling Speed of the Cold Storage So Slow?

2024-12-27

The phenomenon that the temperature of the cold storage fails to drop or drops slowly is relatively common. However, it should be dealt with promptly to avoid more serious problems in the cold storage.
Under normal circumstances, most of the above - mentioned problems are common cold - storage malfunctions that occur due to the users' non - standard operation of the cold storage over a long period. Generally, the reasons for the temperature drop in the cold - storage project are as follows:

Problem: There is a large amount of air or refrigeration oil in the evaporator, reducing the heat transfer effect.
Solution: Regularly ask someone to check the evaporator and clean the garbage in the corresponding area.
Problem: The throttle valve is improperly adjusted or blocked, and the refrigerant flow rate in Yantai is either too large or too small.
Solution: Regularly detect the throttle valve every day, test the refrigerant flow rate, maintain stable refrigeration, and avoid excessive or insufficient flow.
Problem: The amount of refrigerant in the system is insufficient, resulting in insufficient refrigeration capacity.
Solution: Replace the refrigerant to improve the refrigeration capacity.
Problem: The compressor has low efficiency, and the refrigeration capacity cannot meet the load requirements of the storage.
Solution: If all the above methods have been tried and the refrigeration efficiency still seems low, then check whether there is a problem with the compressor.
Problem: In addition, during the construction and use process, the thermal insulation and moisture - proof performance of the insulation material may be damaged, causing the insulation layer to get damp, deform, or even rot. As a result, its heat - insulation capacity decreases, the cold loss of the storage increases, and the temperature drop of the storage slows down significantly.
Solution: Regularly have professional technicians test the insulation material.
If deformation of the material is found, replace it in a timely manner.
Problem: Another important reason for the large cold loss is the poor sealing performance of the storage. A large amount of hot air invades the storage from the air - leakage points. Generally, if there is condensation at the sealing strip of the storage door or the sealing part of the cold - storage project's thermal insulation wall, it indicates that the sealing at this place is not tight.
Solution: Regularly check the tightness inside the storage, especially pay attention to whether there is condensation in the corners.
Problem: In addition, frequently opening and closing the storage door or having too many people entering the storage at the same time will also increase the cold loss of the storage.
Solution: Try to avoid opening the storage door too frequently to prevent a large amount of hot air from entering the storage. Of course, when the storage has frequent inventory access or a large quantity of incoming goods, the heat load increases sharply, and it usually takes a long time to cool down to the specified temperature.