| That's in the right direction but we can develop one that will do a much better job of selecting the right pump.
The system should be designed as it will be installed and the pump selected from the requirements the system calls for.
In a proper design, the pump design curve should cross the system curve at the pumps most efficient point. The hobby is rampant with people selecting the pump without knowing the total head first. That's not the way to design a pump circuit.
A good program would accept inputs for all the branches of the plumbing including length #, of fittings flow, whether it's a pressurized or gravity flow, etc. The outcome would be the proper size pipe for each circuit and the total system head for any flow. The program could propose the pumps in it's data base that would most efficiently serve that system. Those pumps can be used or someone preferring to look further would have the head and flow to match the most efficient point of the pump.
There was a time people were paralleling a bottom drain and a skimmer to one sump and then a pump. Back then, 2'000 gallons was considered a good size and the bottom drains and the skimmer were 2" lines. Now we use a 4" bottom drain and still install a 2" skimmer line. It's so imballanced the BD valve has to be shut donw to a point that's very inefficient. To resolve that problem, Most ponds install a skimmer circuit on a separate pump. |