During the operation of our cold storage, issues such as unclear refrigeration effects and frosting on the evaporator surface often arise. These issues are primarily due to excessive frost buildup on the evaporator surface within the cold storage, which increases the thermal resistance of the evaporation pipeline and hinders heat conduction through the pipeline, thereby affecting the refrigeration effect. Therefore, it is crucial to regularly defrost and remove frost from the evaporator.

1. Reasons for frosting and icing on air coolers

The reasons for frosting and icing on the cold storage air cooler may be attributed to the following aspects:

1. Excessively high temperature in the cold storage: A temperature exceeding -18℃ will cause the air cooler to continuously operate, generating excessive heat, which in turn leads to frosting and icing.

2. Excessively long operation time of the air cooler: Prolonged continuous operation of the air cooler can lead to the accumulation of a large amount of moisture on the surface of the fan, resulting in frosting and icing.

3. Air leakage in the air duct of the air cooler: Poor sealing of the air duct can lead to poor air convection, resulting in frosting and icing.

4. Defrosting system malfunction in cold storage: The malfunction can prevent the cold storage from defrosting in a timely manner, leading to frosting and icing.

II. Treatment methods for frosting and icing of air coolers

1. Reducing cold storage temperature: By controlling the temperature of the cold storage to below -18℃, we can effectively reduce the operating time of the air cooler and avoid frosting and icing.

2. Control the operating time of the air cooler: Adjust the operating time of the air cooler reasonably according to needs, and avoid operating it for an excessively long time.

3. Check air duct sealing: Regularly inspect the sealing condition of the air duct in the cold storage. If there is any air leakage, promptly repair the sealing area.

4. Regularly clean the defrosting system: Regularly check whether the defrosting system is operating normally, and promptly clean the ice buildup inside the defroster.

III. Suggestions for cold storage management

1. Regularly clean the interior of the cold storage: Frequently clean the cold storage, cold air blowers, drainage pipes, and other related equipment to prevent the accumulation of soot and grease.

2. Regularly inspect equipment: Regularly check whether the cold storage equipment is operating normally and promptly address any issues that arise.

3. Strengthen cold storage maintenance: Choose a reputable cold storage maintenance company to conduct regular inspections and maintenance, extend the service life of equipment, and avoid economic losses caused by operational issues in the hotel's cold storage.

4. Conclusion

Frosting and icing on cold storage air coolers are common issues. Different solutions can be adopted based on the underlying causes to effectively address these problems. Additionally, it is crucial to strengthen management and maintenance during use.