2. The variable inlet damper can be used to flexibly adjust the pressure and flow of the fan during operation. The variable frequency motor can also be selected to adjust the pressure and flow of the fan by changing the speed.

3. Bearing cooling method: according to gas temperature and operating environment conditions choose low-cost water-cooling method or oil-cooling method with good heat dissipation performance. For extremely high temperature operating conditions, can also be installed with an electronic cooler, absolute protection of the reliable operation of the fan system.

4. The material of impeller and main shaft, we will choose high-strength carbon steel, low-alloy steel, high-temperature alloy steel, high temperature &high-strength alloy steel for different working conditions temperature and working speed, so that the impeller and main shaft at high temperature still maintain reliable strength.