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solar water pumping in Sierra Foothills California

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Posted by Saurabh on November 25, 2007, 11:16 pm
My friend lives on a ranch in the Sierra Foothills in California. He
is interested in using  a PV powered water pumping system for his new
well. He wants to pump about 1500 gallons per day from a well depth
about 240' to a tank about 50' above the well.

Can anybody suggest me where should I look for resources on how to
purchase/design components for the system?

He already has another well for backup, so reliability in terms of
water supply due to cloudy days is not an issue but his priority is
low maintenance.

If somebody can direct me to a primer on solar water pumping, that
will be very helpful. I haven't been able to find an uptodate manaul
on the internet.

The Journal of Solar Energy  and ASME Journal of Solar Energy
Engineering have research articles but they are not very helpful. I
looked up a book by Florida solar energy center but it doesn't give
guidelines on manufacturers and pump/motor types and advantages

Saurabh Samdani
Graduate Student
Stanford University

Posted by wmbjkREMOVE on November 26, 2007, 12:03 am
On Sun, 25 Nov 2007 15:16:27 -0800 (PST), Saurabh

The slickest solar pump that I know of is the Grundfos SQ Flex. It
automatically accepts a wide range of AC or DC voltages.

Here's a reputable dealer's product page
http://store.solar-electric.com/grsqpu.html  The 6-2 model might suit.
Curves http://lib.store.yahoo.net/lib/wind-sun/SQFlex.pdf   Brochure
http://www.us.grundfos.com/web/Download.nsf/Pages/2B19EAAF8C0C8AFF88256B830056B6A7/ $File/L-SQ-SL-010.pdf
Complete installation manual
http://www.us.grundfos.com/web/Download.nsf/Pages/42DCFB0ADB81F42288256B9F006D66D3/ $File/L-SQ-TL-031.pdf
You'll probably also want the CU200 controller. There's another box
available as well for those who want to use a generator occasionally,
but it's a bit expensive for what it is. As a simple alternative you
can wire a standard AC plug and receptacle between the array and the
CU200. Put the male on the controller side, and plug that into a
generator if you ever need to. You can hang the pump on 1" poly pipe
and set it by hand.


Posted by wmbjkREMOVE on November 26, 2007, 2:14 pm
 On Sun, 25 Nov 2007 20:56:09 -0600, david.williams@bayman.org (David
Williams) wrote:


This is a case where it isn't practical to calculate the energy
needed. There are too many variables and you don't have nearly enough
info from the OP. For example, you started by using what appears to be
the well depth instead of the static water level, and you don't know
if the 50' is to the top of the tank. The OP knows (or will find out)
the missing data, and from there it will be easier and more accurate
for him to peruse the measured performance curves for available pumps,
which take into account pump design, efficiency, MPPT, etc.


Posted by Solar Flare on November 26, 2007, 2:37 pm
 Just can't stick to the question at hand eh, Weiner? Just have to pick
at the responses  of others. Yup, yours would be the only possible way
to do anything.

Just the usual OCD. Here I found this posted by others for your other
sock puppet.


Posted by Solar King on November 27, 2007, 6:03 am
 On 1126, 1014, wmbjkREM...@citlink.net w=

I think we can try.
Hi Saurabh Samdani

Don't worry. Here has more info you need. I will let you know, also
pls feel free add my MSN ID: lujin_1119@hotmail.com

I give our technology following:
 This is one 160w solar panel, lift is 40m, water flow: 800L/h .two
12v 65AH  gel Lead -acid batteries ,  24V controller .

_______Tehc Introduction:

By the way, if you need solar panels and solar mobile charger, pls see
my forum in goodle. you search "seniod " you will find more.

Kind Regards
Joff Lu
MSN ID: lujin_1119@Hotmail.com

Skype: solarlexus1119

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