Regarding the pump head issue
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The pump in question has a low head capacity; for example, the inlet pressure is 1.3 MPa and the outlet pressure is 2.1 MPa. The fluid being pumped is methanol and water. The power consumption is 5 KW, the pump operates at 7962 rpm, yet its head capacity is only 136 meters
It’s a high-speed pump; the head is more or less the same. The pressure difference between inlet and outlet is only 0.8 MPa.
The pressure difference between inlet and outlet is approximately 80 meters; with the pump’s head added, a pressure of 2.1 at the outlet is no problem
This is quite normal; the pressure difference is just that much.
The pressure difference is only 0.8; its density is lower than that of water, and the head is over 130 – which seems quite reasonable
With the same outlet pressure, a pump with a lower head is chosen because of the high pressure at the pump inlet.
Is the lifting height of the medium by this pump 130 meters? I’m a bit confused: with an inlet pressure of 1.3 MPa, it’s possible to raise the fluid to a height of over 200 meters without any pumping action. How should this be understood? Thank you
There must be requirements as well for the outlet pressure at a height of over 100 meters, right?