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Grundfos Solar Well Pump Wins Green Accolade from Green Builder Magazine

The Grundfos SQFlex Solar-Powered Well Pump was chosen as one of Green Builder magazine’s “Hot 50” products for 2015.

These submersible solar pumps can pump water up to 600 foot total head, and can pump up to 85 gallons per minute for shallow wells, depending on model. The PV array required to operate the pumps vary in size from about 50 to 1400 watts. We recommend higher wattage, of course, for the most reliable performance. These pumps sell for about $2,000.oo and are available online (pump only).

Applicationsgrundfos-solar-well-pump

Being designed for continuous, as well as intermittent operation, the SQFlex system is especially suitable for water supply applications in remote locations, such as:

  • Villages, schools, hospitals, single-family houses, etc.
  • Farms

– Watering cattle
– Irrigation of fields and greenhouses

  • Game parks and game farms

– Watering applications

  • Conservation areas

– Surface water pumping
– Floating pump installations for pumping water from ponds and lakes

 

Features and benefits

  • Renewable energy supply: solar panels or wind turbines
  • Built-in electronics, easy installation
  • Reliable water supply
  • Low operating costs
  • Dry-running protection
  • Built-in motor protection
  • High Efficiency
  • Maximum Power Point Tracking (MPPT)
  • Wide voltage range
  • Built-in sand shield

According to the manufacturer, “The helical rotor pumps are what we recommend if you have any dirt, sand, sediment, or high mineral water from your well. The 3 SQF, 6 SQF, and the 11SQF are helical rotor type pumps. All others are centrifugal. All SQF pumps are 17 to 23 pounds in actual weight.”

Note: All Grundfos SQF helical and centrifugal pumps use brushless motors.

Model Number Type Max Head Max Flow PV Watts (Min-Max) ** Pump Diameter (Pipe Size)
3 SQF-2 Helical Rotor 360 Feet 3 GPM 100-900 3″ (1″ NPT)
3 SQF-3 Helical Rotor 600 Feet 2 GPM 130-900 3″ (1″ NPT)
6 SQF-2 Helical Rotor 360 Feet 6 GPM 100-900 3″ (1″ NPT)
6 SQF-3 Helical Rotor 820 feet 6 GPM 100-1400 3″ (1″ NPT)
11 SQF-2 Helical Rotor 300 Feet 11 GPM 50-1400 3″ (1-1/4″ NPT)
16 SQF-10 Centrifugal 210 Feet 20 GPM 400-1400 4″ (1-1/4″ NPT)
25 SQF-3 Centrifugal 45 Feet 40 GPM 120-1400 4″ (1-1/2″ NPT)
25 SQF-7 Centrifugal 185 Feet 39 GPM 130-1400 4″ (1-1/2″ NPT)
40 SQF-3 Centrifugal 45 Feet 38 GPM 200-1400 4″ (2″ NPT)
40 SQF-5 Centrifugal 90 Feet 70 GPM 300-1400 4″ (2″ NPT)
60 SQF-3 Centrifugal 45 Feet 85 GPM 20-1400 4″ (2″ NPT)

** The watts shown for the PV panels or array are absolute minimum that the pumps needs at the shallowest depth. See the pump curves for more information. To account for wire and other system losses we recommend 15% to 25% more.

See the other Hot 50 Green Products at Green Builder’s Website.

Image Source: http://news.mynarrabri.com.au/case-study-grundfos-sqf-2-5-2n-solar-water-pump-installed-by-barden-pumps-narrabri/

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