The selected flow rate for the water jet condensation pump is 120 m3/h, while the selected flow rate for the centrifugal pump is 160 m3/h. Will it affect the motor?
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The selected flow rate for the water jet condensation pump is 120 m3/h, while the selected flow rate for the centrifugal pump is 160 m3/h. Will it affect the motor?
The motor and the pump are paired, both being 37KW.
Take a look at the curve on the pump’s instruction manual
The performance curve is the standard; as long as there is no deviation from the operating conditions, everything is fine
The operating flow rate is not excessive; as long as the motor power does not exceed the limit, there will be no problems
In the case of a centrifugal pump, as the head increases, the flow rate decreases slightly, and the pump’s power consumption drops; this has no effect on the circulation pump/motor； For water jet pumps, since the nozzle diameter is designed for a pressure (head) corresponding to 120 m3/h, the flow rate of the associated centrifugal pump is set to be high (corresponding to a certain pressure/head), which enables a dynamic balance with the centrifugal pump. When the pressure/head is higher than the design value, the flow rate increases proportionally, reaching a value between 120 and 160 m3/h ； The performance of the water injector is affected: its capacity to extract condensable gases increases, and the exhaust pressure rises.