Pipe pressure drop
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I would like to purchase a gear pump. I am seeking advice regarding the head required. The piping at the pump outlet is made of stainless steel, with a DN40 diameter; the straight pipe length is 200 meters, the maximum outlet height is 20 meters, and there are approximately 20 elbows. The estimated flow rate is 9 m3/h, which corresponds to a flow velocity of around 2 m/s. The viscosity is 2PS (I’m not sure if this refers to 2000 MPa·s), the temperature is 60 degrees, and the specific gravity is 1.2. Please calculate the pressure and determine the appropriate coefficient.
The head is estimated to be over 80 meters.