So I spent some time last night running the pump at different speeds and recording the watts, then running them through the calculator and here's what I found:
RPM Watts GPM
400 132 299
500 118 135
600 94 28
700 89 4
800 93 1
900 112 14
1000 119 9.5
1100 134 11
1200 154 13.5
1300 186 20
1400 222 25.5
1500 271 33.5
1600 318 37.5
1700 370 41
1800 424 43
1900 496 48
2000 584 54.5
2100 652 55
2200 735 57
2300 832 60
2400 826 46
2500 1035 63.5
2600 1136 63.5
2700 1259 66.5
2800 1400 68.5
2900 1543 70.5
3000 1695 72.5
Clearly some unusable data for the lower speeds, but it does start to follow an even progression from about 1,000 to 2,800 RPMs. Anything above 2,800 flattens out so that seems to be the point at which my 1.5" piping maxes out.
Here are some turn over times for various flow rates:
Gals 16000 16000 16000 16000 16000 16000 16000
Hours 4 6 7 8 9 10 12
GPM 66.67 44.44 38.10 33.33 29.63 26.67 22.22
- The problem I'm running into is that to get a turn over in 12 hours I need to run at 1,300-1,400 RPMs which is about 185-225 Watts....am I just limited by my piping such that I will never be able to get approx 100 Watt power usage with a high enough flow? How are others on this board running sub 1K rpms and seeing sub 100 watts? It would appear that longer run times with slower flow aren't really going to save me any (or at least not much) money :grrrr: In fact, I'd save 600 kWh by running for 6 hours at 2X the speed - this just isn't adding up
I took these measurements running only the skimmer and returning to three returns (how it wuld be setup for filtration). All piping on the pad and to the solar is 2" but the suction cleaner port, skimmer and returns are all 1.5" - am I choking the system with ony a single suction line (the skimmer) open? Should I scrap trying to separate cleaning from filtration and always have both open to some degree?
EDITED for readability/spelling errors