I would appreciate some guidance on the calculations regarding the inability to pump liquid
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The medium is oil containing some water; the inlet temperature and pressure are known, as well as the pump’s net positive suction head. How can one determine at what level of water content the pump will fail to deliver flow? Give me some ideas, thanks!
The saturated vapor pressure of water at the pump inlet temperature must not be greater than the pump inlet pressure.
Should the oil pressure also be included?
Simply put, it means that neither water nor oil can vaporize at the temperature at the pump inlet. This phenomenon often occurs with high-temperature pumps: the medium (including water and oil) is in a state of high-temperature saturation inside the container, but when it reaches the pump inlet, the heat generated by the pump’s operation causes the temperature of the medium to rise slightly. At this point, the medium vaporizes, leading to pump cavitation. But if the pump has sufficient NPSH, cavitation will not occur; otherwise, it will~~~