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:[email protected]] On Behalf Of Hilton Dier Sent: Tuesday, March 15, 2022 6:56 PM To: [email protected] 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: [email protected] 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/[email protected]/ 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: [email protected] 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/[email protected]/ 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
