Hi Darryl, I’d love to see that math on that.you mind sharing? -Wes 303-653-3073
> On Mar 27, 2022, at 1:27 PM, Darryl Thayer via RE-wrenches > <re-wrenches@lists.re-wrenches.org> wrote: > > > 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 >> > _______________________________________________ > 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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