Given a pump with a certain flow rate and head, what changes in the main pipeline’s flow rate and head when another pump with lower flow rate and head is connected in series to it?
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Given a pump with a certain flow rate and head, what changes in the main pipeline’s flow rate and head when another pump with lower flow rate and head is connected in series to it? I would like to know: for a pump with a certain flow rate and head, what happens to the main pipeline’s flow rate and head when another pump with higher flow rate and head is connected in series to it?
Generally, the head obtained by connecting two pumps in series is slightly lower than the sum of their individual heads; as for the flow rate, it depends on how you control it, and the specific values can be determined from the performance curve
Compared to adding a booster pump, the head pressure will increase
Pumps all have certain curves; just like fans, there is a relationship between head and flow rate, and it’s not fixed. When pumps are connected in series, the overall flow rate increases slightly, as the load on each individual pump is reduced, and therefore the head definitely increases. After being connected in series, the flow rates become equal. It is possible to do this by ensuring equal flow rates, and then referring to the performance curve of the water pump.