does anyone know of a head pressure calculator?
I am using:
1' per 90
1' per 10' vertical/horizontal
what do T's and flow meters measure?
I am using:
1' per 90
1' per 10' vertical/horizontal
what do T's and flow meters measure?
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I found one online a while back but didn't bookmark it. I also used 0.5' for 45 bend.does anyone know of a head pressure calculator?
I am using:
1' per 90
1' per 10' vertical/horizontal
what do T's and flow meters measure?
I got his from the Ecotech websiteJust curious, when you say "1' per 10' vertical/horizontal" are you saying you are calculating 1' for both vertical and horizontal 10' runs?
this gave me a good ballpark of my plumbing. It calculated that I would be about 50% of my pumps head loss so the +/- is covered.Try this calculator:
Pump Calculator | Pentair AES
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I am considering running 2 Cor-20's- have access to 2. They are 2k gph with a 20' head loss. with 2, i can reduce the head loss for both pumps and have redundancy. All depends on how efficiently I can plumb themDon't forget that at 50% of the rated head you are giving up a lot of flow. The 3100 GPH, L2 is only going to give you 1300GPH at that head. Might not be enough for your UV target flow rates.
If you run pumps in parallel, the flow is additive to a point for the system head. Where it gets complicated is when you increase minor losses from friction due to velocity. The typical UV closed loop is all friction losses. So parallel pumps may not have true additive flow.
Head loss is a function of arrangement of plumbing and load. If you connected in series you could get more head from the pumps.I am considering running 2 Cor-20's- have access to 2. They are 2k gph with a 20' head loss. with 2, i can reduce the head loss for both pumps and have redundancy. All depends on how efficiently I can plumb them
I have been going over plumbing planning and iteration for my system for the past couple weeks. Talking with a few of my mechanical engineering friends, I have come to this generalization.Makes sense. lets say i run 1 1/4" from each pump to a T and expand to 2" to reduce friction on balanced pumps??
the other option is one for return and the other just for the UV dumping back into the sump. not optimal, but a high turn over
Flow rating on pumps is at 0head. The curve tells you operating point. MPG is a fairish analogy. However, MPG is listed at city and highway driving for normal diving conditions. Pumps rating equivalent analogy would be listing a cars milage at 60 mpg, assuming no wind drag on the car and just enough friction for the wheels to move on the ground with no losses through the power delivery system from engine to wheels. Then looking at curve you would find that you get 30mpg highway and 25 mpg city.I get what you are saying. As an IT guy, redundancy, control and seeing the picture from a single Pane of glass is key for me. I think pump ratings are like MPG stickers on new cars. Only in the most optimal conditions can that be achieved.
In this case, if I'm understanding right, you would use 1 cor20 for UV and one for return bypassing the UV, but both go to tank via isolated plumbing? In this case flow through UV is going to be max 1200 GPH ish assuming 8 ish feet of head. If that meets your desires UV flow application, then perfect. Then you have a second return direct to tank, at 1200GPH not through UV?I think that the most optimal would be to run the UV inline from one return segregating the pumps per return- 2.
Attached diagram to try to make sure I am understanding your options.Plan B is to run the UV off of one pump recirculating the sump. My sump is 42 gallons so it can "fairly" effective. If the main pumps go's down I can swap it.
Correct- in theory!In this case, if I'm understanding right, you would use 1 cor20 for UV and one for return bypassing the UV, but both go to tank via isolated plumbing? In this case flow through UV is going to be max 1200 GPH ish assuming 8 ish feet of head. If that meets your desires UV flow application, then perfect. Then you have a second return direct to tank, at 1200GPH not through UV?
The Diagram you provided; all 3 methods is what I was thinking. looking at it on paper, keeping the L3 or L3 type pump would get the desired effect. Option 2 is more realistic. If I really wanted to toss it against the wall- Add a 2nd UV- one on each return! that is probably unrealistic and bad money spent!!Attached diagram to try to make sure I am understanding your options.