Is the pump outlet pressure related to the power factor and the medium density?
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The medium used in this shielded pump is liquefied gas. The inlet pressure is 0.5 MPa, the head is 50 m, and the power factor is 0.85. What is the outlet pressure? Is it equal to the inlet pressure, head, or power factor? Should the outlet pressure have nothing to do with density?
The outlet pressure of a pump is influenced by various factors, with the power factor and the density of the medium being two of them. The lower the power factor, the lower the efficiency of the pump, resulting in a decrease in outlet pressure ； The higher the medium density, the slower the flow rate of the liquid in the pipe, and the outlet pressure will also decrease accordingly. However, the outlet pressure of a pump cannot be determined solely based on inlet pressure, head, and power factor; other factors such as pipe frictional resistance and pipe length also need to be taken into account. Therefore, it is necessary to calculate or measure based on the actual conditions to determine the pump’s outlet pressure. .
If you are interested in this, it’s best to get a copy of \"Principles of Chemical Engineering\" to read; it can explain your questions for your reference.
Theoretically, flow rate and head are not affected by density