The issue with the main fan inlet temperature
Thread Content
Since the inlet of the main fan in our unit is located near the distillation unit, changes in wind direction can cause the hot air above the air coolers used in distillation to affect the physical properties of the air at the fan inlet, resulting in fluctuations in the main air flow rate; this necessitates adjusting the angle of the stationary blades. However, repeatedly adjusting the stator vanes according to temperature changes inevitably has an adverse effect on the servo valve. Therefore, I would like to ask the experts: what methods do your systems have to reduce this impact?
Hot air should rise upward. I think the ambient temperature has a significant impact on the main airflow rate; often, this rate decreases by noon. When we adjust the main airflow rate, we usually make significant changes in order to increase or decrease it. As long as the operation is stable, some normal fluctuations in the airflow rate are not a problem. The situation can also be adjusted by changing the blending ratio, the amount of slurry reused, and the proportions of materials used in combustion (i.e., the air-fuel ratio); there is no need to adjust the main airflow rate frequently.
Essentially, this issue should be addressed during the design phase by determining the location based on local natural conditions. Could an inclined sheet of colored metal panel be installed on the downwind side of the air coolers, so that the hot air released by them flows upward as much as possible, thereby reducing its impact on the inlet of the main fans?
I fully agree with what was said upstairs, hehe. I didn’t explain it clearly enough. In order to minimize the energy consumption of the main fan, we currently use edge-controlled methods, keeping the oxygen level very low. If the temperature at the inlet of the machine changes by 2-3 degrees, the oxygen level will become significantly insufficient. Moreover, in normal operation, the inlet temperature can fluctuate by several degrees over a period of time; I think the only possible explanation is a change in wind direction. The temperature variations throughout the day have been taken into account; it just seems that the temperature is high right now, and under such tight control, adjustments have to be made quite frequently.
Hehe, I was wondering if it’s possible to lower the temperature of the air entering the machine, so as to use less electricity. You say it’s possible to achieve it, right?
So should it be cooled down before filtering at the inlet?