I need some details about to how to calculate the pump power from the general mechanical details.
The pump will be required to pump Qn cubic metres of water per second to a head of H metres at n efficiency. Work out the pump power from these parameters considering that water density is unity. Is this information usefull? Check the units on both sides of the equation.
To complete the equation for pump power calculation: the pump power (kW) will be equal to flow rate in cubic metres per second x density of fluid in kg/cubic meter x acceleration due to gravitational force, 9.81 m/second squared, x head in metres. The shaft power (kW) will then be this pump power/pump efficiency.