Pump series connection
Thread Content
When two pumps of the same model are connected in series, the pressure at the pump outlet increases, and the pressure difference grows. Now consider the ideal condition: zero load and no pressure loss; this is the maximum flow rate that the pump can achieve. But as the pressure difference increases, the flow rate also increases; so will the flow rate increase further when they are connected in series? Does the flow rate stop increasing once the pressure difference reaches the pump’s maximum flow rate?
What does pressure difference refer to? The original poster’s question isn’t very clear
I can’t understand the poster’s question at all. . . . . :lol
When two pumps with different flow rates are connected in series, the flow rate is limited by the pump with the lower flow rate; the pump with the higher flow rate will only operate within the range corresponding to that lower flow rate. Head is additive.
The centrifugal pump has the highest pressure difference and a flow rate that is close to zero.
Pumps of the same model are connected in series to increase pressure and in parallel to increase flow rate – that’s how it’s generally described. However, connecting them in series does increase the flow rate, making it much higher than that of a single pump.