Pump head
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Our company needs to purchase new circulation water pumps, but I’m not able to determine the required net positive suction head, head pressure, and power for these pumps. I would appreciate it if experts could provide detailed calculation guidelines. Thank you!
Head: 1 meter for a vertical rise of 1 meter, 1 meter for a horizontal distance of 10 meters, and 1 meter for 2 bends. In the case of a circulation system, there are no particular requirements regarding flow rate; it just depends on the diameter of the pipes. This is a straightforward explanation – does it make sense? If you are not clear, you can call for consultation: Shanghai Hai’e Pump Valve Co., Ltd., Phone: 021-54160744, Company website: www.hir.sh.cn
For these problems, I think I can just contact the professional manufacturers directly and have them solve them!
The head is determined by the design parameters of the device and the pressure drop in the piping, while the power is calculated based on the mechanical efficiency of the pump/motor and the flow rate and head of the medium; no value needs to be provided for this
The shaft power of the pump is the product of the medium density, flow rate, and head, divided by the overall efficiency; the result is then rounded to the rated power of the motor in the next higher capacity category.
Estimate it yourself; it’s best to have the supplier provide the boundary conditions for making a choice, including the selection of materials.
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It needs to be calculated based on the pipe resistance, using Bernoulli’s equation