Selection of water pump pipe diameter
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The outlet of the water pump is DN65, but the water demand at the point of use is 75 t/h; calculations show that the flow rate for a DN65 pipe is approximately 36 t/h. So, will there be any effects if the diameter of the pump outlet pipe changes?
First, you need to determine the flow rate of the pump. According to the pump’s performance curve, once the flow rate exceeds the rated value, the head pressure decreases, which affects the operation of subsequent equipment
It still depends on the pump’s flow rate; if the pipe diameter is too large, the flow rate increases while the head decreases.
It usually needs to have its diameter changed. Otherwise, the flow rate in the outlet pipeline will be too high! It is better not to exceed the recommended flow rate
The flow velocity at the pump outlet is generally 6–7 m/s, and the outlet pipes usually need to have their diameter changed