Questions about fan parallel and wind pressure
1. The fan outlet nozzle is blown to a gas collection box, and the other is taken out from the gas collection box to the pipeline, which is connected in parallel;
2. When the pipe size is fixed, it will not be twice. When a fan is running, the flow rate in the pipe is low, the pressure loss is small, and the fan volume is large. When the two fans are started at the same time, the flow rate in the pipe is high, and each one is individually The air volume of the fan will be reduced, not twice, but the total air volume of the two fans will be greater than the air volume of the single fan, which is less than twice the air volume when the single fan starts.
3. 40HZ, 50HZ can run, but when your design value is running at 40HZ, when the system needs to increase the air volume, there is room to improve, 50HZ is full, no lifting space.
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