集装箱回风温度下降说明货物未预冷或预冷不足

We also noticed that the return air temperature of the container began to slowly decrease from 23.6 degrees Celsius after it started working at 0221 on February 22, until it dropped to 15 degrees Celsius at 0000 on the 24th. This indicates that the goods were not pre-cooled or the pre-cooling was insufficient before loading.