Deep Well (400'-600' TDH) Water Pumping [RE-wrenches]

[info at backwoodssolar.com]

Travis: Those de wells can be a problem.  I just naturally resist the idea
of a dual inverter system at 240 for a "weekend cabin"  or a dedicated PV
system for the pump.  Both of these [produce far more power and water than
they are likely to need, unless cost is of no consequence.  But you did say
"least expensive way".

Consider that a far smaller PV system would probably me all other needs, and
a generator and large storage tank could handle the water. Gravity from
there if possible (as low as 10 pounds works if you design the plumbing
right) or a secondary DC pumps and pressure tank is more often needed.  The
cost then is way reduced, you can put the funds toward a true sine inverter
with a good charger and get the odds of DR inverters off your back, if the
customer is willing to run the gen to fill the tank once a weekend.
Steve Willey
Backwoods Solar Electric Systems www.backwoodssolar.com
----- Original Message -----
From: Travis Creswell, Ozark Solar <ozsolar at ipa.net>
To: <RE-wrenches at topica.com>
Sent: Friday, August 24, 2001 6:42 AM
Subject: Deep Well (400'-600' TDH) Water Pumping [RE-wrenches]


> I am designing a pumping system for a well that has yet to be drilled.
The
> well driller is saying that in this area he won't hit drinkable water
until
> ~400' and if that's sulphur he will need to go another 200'.  So we might
be
> looking at TDH of 600'.  I believe him.
>
> The well will be for a weekend cabin that already has a small 12 volt DC
> only system.  The customer is determined to have AC soon.  I need some
help
> choosing the least expensive way to go for water pumping.  Historically
and
> quite successfully I've used dual inverter set ups feeding a standard 240v
> well pump.  I have a dual DR3624 set up on a 500' well that works
> wonderfully

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