Fw: Need a Deep Well Pump Solution [RE-wrenches]

[Brad Bassett]

Allan,

I have some more info on the performance of the SQFlex pump. 

On 120VAC (PS inverter) and 360 feet of TDH it will produce 2.244 
gal/min, and consume 355 watts. Check my math, but I think that works 
out to 2.64 whr/gal (AC watthours).

Using 3 75watt modules solar direct using Albuquerque data in April at 
35 deg tilt (7.8 kWh/m2/day, probably more in June at a lower tilt) 
should give 544 gal/day with max of 1.23 gal/min. This works out to 1755 
whrs/day and 3.23 whr/gal. 

Two things to keep in mind. The SQFlex is the only pump where you can 
easily change form AC to solar direct and back. The SQFlex is not 
recommended for greater than 365 feet of head, though it has been used 
to 390 and the sizing program will take you there. 

I just checked and so far only two SQFlex pumps have been returned to 
Grundfos (out of - my guess a few hundred installed), one with a bad 
check valve and one full of mud. Not bad for a new solar pump.

I will email a pdf of the sizing printout separately.

Brad



Allan Sindelar wrote:
> 
> 
>  Allan Sindelar wrote:
> 
> 
> Option 1: Grundfos SQ-Flex, set at 350-390',
5. Least efficient in watthours/gallon pumped of the three,




Brad Bassett
Schott Applied Power 
Tumwater, WA office
bsbassett at earthlink.net

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