I have a 12,000 gallon pool in Central Florida that I am interested in switching to a SWG system. The concern that I have is that I use an Pentair Intelliflo pump that I run 24 hours a day at only 1,230 RPM. I don't have the GPM equivalent for that as it doesn't show that on the display of my model. My guess is that I am moving about 20 GPM or so at 2 PSI (measured 40 GPM on the discharge with no back pressure). I run it this slow since it meets my filtration needs just fine and the pump is only using 140 watts at that speed. That's 3.36 kWh/day or 102 kWh/month which is less than $10/month here in electricity. I have a 10kW solar system and try to keep my bill at net zero in all but the summer months so that is my motivation for the slow (and thus highly efficient) speed. Even without the solar system, it is just good practice to use as little energy as necessary to accomplish a task.
Anyway, when researching SWG systems several years ago I discovered that most of them will not operate at low flow rates. Do any of you know what the typical minimum flow rates are for the common SWG systems these days? Do you know of any of the systems that has lower flow rate requirements than others? I would like to avoid turning up the pump speed just to accommodate a SWG system.
Thanks for your thoughts.