May I ask what the air volume of the fan is at such a frequency?
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This post was last edited by batawfn on 2022-8-29 at 15:13. The parameters of this fan are as follows: maximum volume flow rate of 39597 m3/h, wind pressure of 8113 PA. The frequency settings for the inverter are 25HZ, 30HZ, and 35HZ; it doesn’t seem to be a linear relationship. Please let me know if there are any other parameters needed. Thank you.
If anyone knows, please let me know. Thank you
19,798 at 25hz, 23,758 at 30hz, 27,717 at 35hz
The technical parameters under different operating conditions should be provided by the manufacturer upon request
Firstly, the parameters listed on the nameplate differ from those under actual operating conditions. For simplicity’s sake, we will ignore this difference and assume that the parameters on the nameplate represent the actual operating conditions at 50HZ in the field. Under this assumption, flow rate can be considered to be proportional to rotational speed, while pressure is proportional to the square of rotational speed; you can calculate the remaining values by yourself. Is there too much headroom built into this fan?
It depends on whether the control signal of the frequency converter is air pressure or air volume. If wind pressure is used as the control signal, when the wind pressure increases, the inverter will reduce the frequency, regardless of the volume of air flow at that time ； If air volume is used as the control signal, when the air volume increases, the inverter will reduce the frequency, regardless of the air pressure at that time. .
The fan is a power device, while it’s a measuring device; it would be better to install a gas flow meter
Thank you for sharing, I’ll learn from it! ! ! ! !