Hello, Sorry to be so late but I have been overloaded. Just a note on physics of lifting water. The calculation indicates if you pump 1 gallon per minute up 300 feet it required a water hp of 5 HP Use this base number and good pumps are about 70% efficient. If the flow rate is not 1 GPM adjust the HP accordingly. For example, if you want to pump 10 GPM it requires 50 HP or if you want to pump 10 Gallons / day it requires (50HP/ 24h 60min )requiring 0,035 HP.. Again I apologize for delay.
On Wed, Mar 16, 2022 at 1:33 AM William Miller <will...@millersolar.com> wrote: > Hilton: > > A valid point. However in this region wells often do not recharge as well > as we might like. In these cases, to meet gallons per day you have to pump > long and slow--more hours per day than the sun will be up. That means of > course generator or battery storage. > > The economics have shifted from when I started installing direct-DC water > pumping. The money that is being spent today to provide commercial ag > water > is beyond what I would have comprehended back then. This means new > technology--and questions need to be asked, including considering battery > storage. > > Thanks for your reply. > > William > > Miller Solar > 17395 Oak Road, Atascadero, CA 93422 > 805-438-5600 > www.millersolar.com > CA Lic. 773985 > > > > -----Original Message----- > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On > Behalf Of Hilton Dier > Sent: Tuesday, March 15, 2022 6:56 PM > To: RE-wrenches@lists.re-wrenches.org > Subject: [RE-wrenches] Water Pumping 24/7 > > Here’s a lateral take on this. A 500 gallon poly water tank is far cheaper > than the batteries needed to fill it. > > Years ago I rigged up a seasonal pump system for a man who had two ponds on > his property. The lower one was well fed by a spring but the upper one > wasn’t. > I used a 200 watt DC piston pump and a couple of modules with a linear > current booster. A couple of breakers but no batteries. It just chugged > away > quietly all (moderately sunny) day, filling the upper pond. > > Using a positive displacement pump is key for minimizing power > requirements. > At 300 feet that’s about 125 psi, which is not out of line for a piston > pump. Fill a big poly tank and pressurize it with a small DC diaphragm pump > if necessary. > > Simple, efficient, cheap. > > Hilton Dier III > Renewable Energy Design > Missisquoi River Hydro LLC > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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