When designing the fan pipe network, why should parallel pipes ensure balanced resistance?
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When designing the fan pipe network, why should parallel pipes ensure balanced resistance? For example, in the picture below, 1# pipe section and 2# pipe section meet at point A. When designing the pipeline and fan, make sure that the resistance difference between 1# pipe section and 2# pipe section does not exceed 10%. What will happen if the resistance difference is very large?
Where did you find the calculation method?