The issue of competing for flow rate between two pumps
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I would be very grateful if an expert could help explain the phenomenon and causes of the flow competition issue that occurs when two pumps are connected in parallel and one of them is switched off. Thank you very much!
Is the pipeline leading to your inlet the same for both pumps? Distance to the number of elbows: how many times is the inlet pipe the length of the pump inlet?
In terms of design, the pipes and fittings are identical! The issue regarding volume shortage might be caused by the inlet filter or by the backup pump running out of fluid!
What does it mean for the backup pump to evacuate? And what if there’s no filter?
There is no filter at the pump inlet – is such a design possible? Try searching on Baidu or forums for pump evacuation!
Is there any possibility of taking a shortcut? In other words, pumps that are located closer to the tower or face less resistance from the pipes will have a higher flow rate!