Temperature problems that should be particularly noticed in air heat exchangers
Aspect 1. When the air heat exchanger is shut down, we need to continue to supply the heat exchanger. The fan can not be stopped immediately, and the hot air is discharged. When the temperature of the flue gas entering the heat exchanger is lower than 400 °C, The fan can be turned off;
Aspect 2: Under normal circumstances, when the temperature of the flue gas of the air heat exchanger reaches 400 °C, the heat exchanger must be in the air supply state. When the preheating temperature exceeds the maximum design value, our relevant technicians should increase the air volume and release the excess part. The hot air. When the temperature of the flue gas entering the heat exchanger is too high, cold air can be taken.
In addition, we have learned that when the air heat exchanger is applied normally, there is a sudden power failure that easily causes the heat exchanger to burn out and should be prevented as much as possible. If this happens, immediately close the flue gate or take effective measures to reduce the temperature of the flue gas so that the heat exchanger will not be damaged by overheating.