How should we calculate Pump Head through any thumb rule for a given GPM or Tons for a Chiller Pump?
The process I came across is a long process of calculating Head loss at every pipe run. But I wanna know any thumb rule so that during tendering/estimation of any project, I can analyse the Pump capacity required for the project.
Is there any relation between the GPM and Pump Head from which it can be directly evaluated?
Awaiting kind help please.