I presented a paper several years ago outlining a similar system using one thermal water heater and comparing it to a PV-based system. In my tests, the PV-system outperformed the solar thermal system in energy per square foot of collector. There were sometime the Solar Thermal would out perform at midday and bright sun. But not for the whole day the PV system would always win. The trick was operation of the thermostat, the Cybro made it possible to use the normal switch. The other method for switching was a capacitor across the terminals.
On Sun, Apr 17, 2022 at 1:09 PM Kirk Herander via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Cybo is quite interesting. Makes me want to change my refusal to install > solar DHW anymore. > > On Sun, Apr 17, 2022 at 12:16 PM petertor--- via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> This is great information folks. It looks like Cybo has most of the load >> scenarios covered. >> >> I have one last question before I call them on Monday morning: "Do the >> Cybo inverters support LiFePO4 batteries? That is, does one of their four >> DC inputs not only auto-detect batteries but does it recognize LiFePO4 vs. >> PbAcid? It is my understanding that LiFePO4 batteries need a different >> charging cycle compared to PbAcid to attain a 100% SOC. >> >> - Peter >> >> Peter T. Parrish, Ph.D. >> President, California Solar Engineering >> 1107 Fair Oaks Blvd Ste. 351 >> South Pasadena, CA 91030 >> (323) 839-6108 >> >> On 04/16/2022 3:59 PM Darryl Thayer via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >> >> yes, there are three versions of the cybo inverter, the one that I a most >> familiar with produced a 60 HZ AC signal; the voltage did not exceed 120 >> volts or 240 volts. The voltage out times the current out was equal to the >> voltage in times current in. This allowed me to operate a resistance load, >> like a water heater. >> >> On Sat, Apr 16, 2022 at 2:39 PM Glenn Burt via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >> Take a look at Cybo inverters >> >> -Glenn >> Sent from my 'smart'phone, so please excuse typos and spelling errors. >> >> ------ Original message------ >> *From: *petertor--- via RE-wrenches >> *Date: *Sat, Apr 16, 2022 12:49 PM >> *To: *re-wrenches@lists.re-wrenches.org; >> *Cc: *peter...@pobox.com; >> *Subject:*[RE-wrenches] Is There an "Off-grid" (i.e. constant voltage) >> Version of Microinverters? >> >> It has been a while since I installed a PV system, so I apologize in >> advance for my ignorance wrt product availability. >> >> I recently had need for the off-grid equivalent of a grid-tied >> microinverter. I have an assortment of new and not so new PV modules such >> as the Solaria mono, 400 Wp and the Jinko poly, 310 Wp. I would like a >> microinverter that makes available 120 Vac (or 240 Vac but 120 is >> preferable), 60 Hz. I would then take the output of these microinverters >> and combine them in a subpanel. I do not have a need for battery storage. >> >> I can explain more about the application to anyone who has an interest. >> >> Does such an component exist? >> >> Thanks in advance for any help. >> >> - Peter >> >> Peter T. Parrish, Ph.D. >> President, California Solar Engineering >> 1107 Fair Oaks Blvd Ste. 351 >> South Pasadena, CA 91030 >> (323) 839-6108 >> _______________________________________________ >> 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 >> >> >> Peter T. Parrish, Ph.D. >> President, SolarGnosis >> 1107 Fair Oaks Blvd Ste. 351 >> South Pasadena, CA 91030 >> (323) 839-6108 >> _______________________________________________ >> 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 >> >> > > -- > > *Kirk Herander / **kirkh@vermont.solar <kirkh@vermont.solar>* > > *Owner|Principal, VT Solar, LLC* > > *Celebrating our 31st Anniversary 1991-2022!!* > > *www.vermont.solar* > <https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com&data=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842843233477645&sdata=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D&reserved=0> > > dba Vermont Solar Engineering > > 802.863.1202 > _______________________________________________ > 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
