If the fan resistance decreases, will the flow rate increase? !
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Supposedly, even with low resistance, there is still a rated speed and a rated flow rate; the flow rate can’t exceed that rated value, right?
Why can’t it exceed the rated flow rate? Like centrifugal pumps, centrifugal fans also have operating curves; there is a relationship between flow rate and operating current. When the current exceeds the rated value, two outcomes can occur: either the flow rate exceeds the rated value, or the pressure exceeds the rated value
The current exceeds the rated value – would you dare to use it? What to do if it catches fire?
The fan flow depends on the local wind volume; if the local wind volume is low, the resistance is low as well, and the flow rate cannot increase much regardless. The fan flow rate also depends on the characteristics of the fan purchased; if the fan’s air intake capacity is low and the resistance is low, the flow rate cannot be high either. . . . . .