Which Brand Submersible Pump To Choose?

pabloesguapo
pabloesguapo Solar Expert Posts: 116 ✭✭
in Solar Water Pumping #1
I had my eye on a Grundfos 16 SQF-10, but I'm wondering if there might be a less expensive submersible pump that will give similar performance.

My well stats: 175' TD, 53' SL, Flow of 50+ GPM. My homeowners Association limits our wells to 15GPM. I'd like to get as close to that as I can.

From what I can figure, the 16 SQF-10 can provide about 15 GPM if I provide it with about 750 watts of DC power from PV cells. 4 PV cells at 185 watts apiece (740 watts total) should just about cover it, no?

Is there any other brand/model submersible pump out there that can match the Grundfos's performance at a lower price?
27 Kyocera panels, 6,500w
24 CG2 6v batteries, 48v, 630Ah
Midnite Classic 150 & Classic 150 Lite in "follow me" mode
(2) Outback fx3648 inverters
Generac ecogen 6kw backup generator
Mate3s
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Comments

  • BB.
    BB. Super Moderators, Administrators Posts: 33,613 admin
    #2
    Re: Which Brand Submersible Pump To Choose?

    Another thing to research is sand/sediment in your well water--Some pumps do better than others.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • stephendv
    stephendv Solar Expert Posts: 1,571 ✭✭
    #3
    Re: Which Brand Submersible Pump To Choose?

    Lorentz is another brand that's quite popular as a direct solar pump. http://www.lorentz.de/
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  • pabloesguapo
    pabloesguapo Solar Expert Posts: 116 ✭✭
    #4
    Re: Which Brand Submersible Pump To Choose?

    Been trying to find those Lorentz pumps, but can't find anyone who will publish their prices. Any idea how much they cost?
    27 Kyocera panels, 6,500w
    24 CG2 6v batteries, 48v, 630Ah
    Midnite Classic 150 & Classic 150 Lite in "follow me" mode
    (2) Outback fx3648 inverters
    Generac ecogen 6kw backup generator
    Mate3s
    · Share on Twitter
  • Ross
    Ross Registered Users Posts: 20 ✭✭
    #5
    Re: Which Brand Submersible Pump To Choose?

    Greetings: Back in December I rcvd a quote on a Lorentz PS1200 controller/HR pump for $2340. Hope this helps.
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  • tmarch
    tmarch Solar Expert Posts: 143 ✭✭
    #6
    Re: Which Brand Submersible Pump To Choose?
    pabloesguapo wrote: »
    Been trying to find those Lorentz pumps, but can't find anyone who will publish their prices. Any idea how much they cost?

    Lorentz is a modular pump, meaning that the controller, motor and pump are all seperate. For me that's a + as you don't have to replace them all if 1 fails and they seem to be as reliable as any pumps.

    check your messages
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  • pabloesguapo
    pabloesguapo Solar Expert Posts: 116 ✭✭
    #7
    Re: Which Brand Submersible Pump To Choose?

    Ok, grundfos or Lorentz, both can run on both ac or dc, right?
    27 Kyocera panels, 6,500w
    24 CG2 6v batteries, 48v, 630Ah
    Midnite Classic 150 & Classic 150 Lite in "follow me" mode
    (2) Outback fx3648 inverters
    Generac ecogen 6kw backup generator
    Mate3s
    · Share on Twitter
  • tmarch
    tmarch Solar Expert Posts: 143 ✭✭
    #8
    Re: Which Brand Submersible Pump To Choose?
    pabloesguapo wrote: »
    Ok, grundfos or Lorentz, both can run on both ac or dc, right?

    Either will run on AC or DC with the correct interface.

    Grundfos is a bit simpler in this respect as you can use the 101 (I believe) control box that has a pigtail for 110 AC.
    Lorentz requires a seperate component that is basically a AC to Dc converter.
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  • pabloesguapo
    pabloesguapo Solar Expert Posts: 116 ✭✭
    #9
    Re: Which Brand Submersible Pump To Choose?

    Cool. Thinking pv cell primary, generator backup.
    27 Kyocera panels, 6,500w
    24 CG2 6v batteries, 48v, 630Ah
    Midnite Classic 150 & Classic 150 Lite in "follow me" mode
    (2) Outback fx3648 inverters
    Generac ecogen 6kw backup generator
    Mate3s
    · Share on Twitter
  • Mangas
    Mangas Solar Expert Posts: 547 ✭✭✭✭
    #10
    Re: Which Brand Submersible Pump To Choose?

    We only use Grundfos on our ranch wells and underground tanks.
    Ranch Off Grid System & Custom Home: 2 x pair stacked Schneider XW 5548+ Plus inverters (4), 2 x Schneider MPPT 80-600 Charge Controllers, 2 Xanbus AGS Generator Start and Air Extraction System Controllers, 64 Trojan L16 REB 6v 375 AH Flooded Cel Batteries w/Water Miser Caps, 44 x 185 Sharp Solar Panels, Cummins Onan RS20 KW Propane Water Cooled Genset, ICF Custom House Construction, all appliances, Central A/C, 2 x High Efficiency Variable Speed three ton Central A/C 220v compressors, 2 x Propane furnaces, 2 x Variable Speed Air Handlers, 2 x HD WiFi HVAC Zoned System Controllers
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  • Texas Wellman
    Texas Wellman Solar Expert Posts: 153 ✭✭
    #11
    Re: Which Brand Submersible Pump To Choose?

    I have used several Lorentz pumps and really like the set-up so far. The ones I used can run on one single large panel as opposed to the grundfos which likes the higher voltages and thus more panels.
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