Design pressure and temperature of the pump
Thread Content
What are the values of the design pressure and design temperature of a pump under what conditions?
Pressure generally refers to the inlet pressure Ps of the pump and the outlet pressure Pd of the pump; these are the pressures at the flanges at the pump’s inlet and outlet, and they affect the pressure tolerance of the pump body as well as the bearing temperature. The inlet temperature includes the normal, minimum, and maximum temperatures
I really didn’t notice the design pressure and temperature on the pump’s nameplate. But it is definitely an important purchasing parameter.
There’s no need to consider this, right? . . .
The most important parameters of a pump are the flow rate, viscosity, density, and operating temperature of the fluid, as well as the required head. With these parameters, the manufacturer can determine the design pressure and design temperature of the pump
It is under the rated operating conditions; the pump is designed based on these parameters
The design pressure of the pump, including the inlet pressure, is related to cavitation； Pump outlet pressure is related to head. The design temperature of a pump includes the temperature of the fluid and the ambient temperature; the design values for these two temperatures are determined based on the specific operating conditions.
Design pressure = inlet pressure + pressure at the shut-off point. The inlet pressure must take into account the pressure at which the safety valve activates. The shutdown pressure = head x multiplier; this multiplier can be estimated in advance – for example, 1.2 for centrifugal pumps – with the final value determined based on the information provided by the manufacturer.