Pump inlet pressure, current
Thread Content
Why does the pump’s inlet pressure increase while its current decreases accordingly?
You mean a centrifugal pump, right? An increase in inlet pressure means an increase in the pump’s inlet head, and as a result, the work required of the pump itself decreases. So the current decreases.
Centrifugal pumps maintain a constant head; increasing the inlet pressure has no effect on power, and the current remains unchanged. However, in the case of positive-displacement pumps, increasing the inlet pressure can reduce the pressure difference, which leads to a decrease in shaft power; as a result, the current value also decreases
This is related to the pump’s curve; the current will not decrease by much, and the outlet pressure of the pump will increase accordingly
I’ve learned something, thank you. It seems there’s still a lot of knowledge I need to learn*. {:1_90:}
There are specialized areas in each field; let’s learn from one another*
This post was last edited by liaifeng on 2018-3-26 20:20. If it’s an inverter-driven motor, what you say might be true! For a conventional power-frequency motor, its speed remains constant; it is the outlet pressure that changes! The pork belly is growing – keep it up! {:2_36:}
{:1_90:} The pork belly grew up alongside Haichuan