1. Set according to the actual situation of the cold storage: the defrosting time should be set according to different situations of the cold storage, such as the size, temperature, humidity, types of stored items and types of cooling systems. Generally speaking, the ideal defrosting cycle is 1-2 times a day, and the time is about 10-20 minutes.

2. By observing the situation inside the cold storage, it can be determined that the temperature, humidity and ice layer monitoring system can be installed to monitor the temperature, humidity and ice layer thickness inside the cold storage in real time, and the rationality of defrosting time can be determined according to the obtained data.

3. Combined with the setting of cold storage control system: the cold storage control system can automatically control the defrosting time and cycle, but it needs to be set and connected reasonably first. In the control system, the defrosting time should be set in a time period that is not easy to affect the temperature and humidity in the cold storage to ensure the stability of air quality in the cold storage.