Hi,
I am currently verifying some tubing sizes for existing chemical injection pumps. The pumps are diaphragm, double head with motor rpm of 1800.
When I am calculating the NPSHR and specifically the acceleration head loss, do I used the whole 1800 rpm in the equation or I should use a lower value? If a lower value is to be used, how do I calculate it?
ha: Acceleration head loss (ft) = Length x velocity x RPM x Constant / K x 32.2
Regards,
Sherif