Windy: Thanks for the info. I have been in contact with Sun Pumps. They can sell me a pump that will work off of a high voltage battery bank (greater than 90 VDC and likely much higher). However they cannot provide or recommend a charge controller to output PV charge at the higher voltage. Do you or any wrench know of a high voltage charge controller on the market?
Thanks in advance. William On Thu, Mar 10, 2022 at 8:29 AM Windy Dankoff <windydank...@mac.com> wrote: > Dear William, > > SunPumps has a new helical rotor submersible series (positive > displacement) that is typically much more efficient for high lift compared > to a normal multi-stage centrifugal sub (you'll have to compare the specs). > > https://www.sunpumps.com/Products/HR%2010-525%20AC%20DC > > I have no inside-knowledge of this item, but it's based on good technology > similar to Lorentz and Grundfos and SunPumps is on the same level as a > world leader. > > With any DC pump, you need to be sure it's compatible with battery power > if you need 24/7. > > I hope you'll let us know how it goes. > > Windy > > > *From: *William Miller <will...@millersolar.com> > *Subject: **[RE-wrenches] 24/7 wATER pUMPING* > *Date: *March 8, 2022 at 7:53:37 AM MST > *To: *RE-wrenches <re-wrenches@lists.re-wrenches.org> > *Reply-To: *<will...@millersolar.com> > > > Friends: > > > I have a client that wishes to pump water at about 10 GPM from spring > through autumn equinoxes. Lift is 300 feet. (This is the project that > will not siphon beyond 33 feet.) > > > I can design a solar/battery/inverter system for this purpose but I am > wondering if there is a direct DC option. I am going to look at the > Grundfos SQ-Flex tables to see if this is an option. > > > Does anyone out there have any advice on best approach to this project? > > > Thanks in advance, > > > William Miller > > > Miller Solar > 17395 Oak Road, Atascadero, CA 93422 > 805-438-5600 > www.millersolar.com > CA Lic. 773985 > > > > > > > > *From: *Jerry Shafer <jerrysgarag...@gmail.com> > *Subject: **Re: [RE-wrenches] 24/7 wATER pUMPING* > *Date: *March 8, 2022 at 8:58:16 AM MST > *To: *William Miller <will...@millersolar.com>, RE-wrenches < > re-wrenches@lists.re-wrenches.org> > > > William > Here is the deal it will be simplest to go AC for the pump because of the > requirement of high voltage DC yes there are small er output DC pumps but > that is not what you need, first find a AC pump that can do the required 10 > GPM at 300 feet of head then design a inverter to fit that bill PV to > recharge that usage and then some. look at the first and last day of the > desired water demand and go the shorted day as a production base line. When > looking at pumps grundfus is very efficient in DC and wild AC but at a cost > so look at options output vs input. I have done this with Grundus and DC > direct to a 50K storage tank at the very top of the property so it can be > done with DC so AC just requires additional nighttime. > Here might be an option large enough storage tank to fill every night and > a pump big enough to drain it every day, this can be done DC direct, > cheaper and less moving parts and the pump can run on a genny if you have > bad weather for days, This is how the ones I have done work. > Jerry > > > _______________________________________________ > 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 > > -- William Miller Miller Solar.com 895-438-5600 www.millersolar.com
_______________________________________________ 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
