<div dir="ltr"><div class="gmail_default" style="font-family:times new roman,serif;font-size:large">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. </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Apr 17, 2022 at 1:09 PM Kirk Herander via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Cybo is quite interesting. Makes me want to change my refusal to install solar DHW anymore.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Apr 17, 2022 at 12:16 PM petertor--- via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
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This is great information folks. It looks like Cybo has most of the load scenarios covered.
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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.
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Peter T. Parrish, Ph.D.
<br>President, California Solar Engineering
<br>1107 Fair Oaks Blvd Ste. 351
<br>South Pasadena, CA 91030
<br><a href="tel:(323)%20839-6108" target="_blank">(323) 839-6108</a>
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On 04/16/2022 3:59 PM Darryl Thayer via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:
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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.
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On Sat, Apr 16, 2022 at 2:39 PM Glenn Burt via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:
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Take a look at Cybo inverters
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-Glenn
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Sent from my 'smart'phone, so please excuse typos and spelling errors.
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<strong>From: </strong>petertor--- via RE-wrenches<u></u><u></u>
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<strong>Date: </strong>Sat, Apr 16, 2022 12:49 PM
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<strong>To: </strong><a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noopener" target="_blank">re-wrenches@lists.re-wrenches.org</a>;
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<strong>Cc: </strong><a href="mailto:petertor@pobox.com" rel="noopener" target="_blank">petertor@pobox.com</a>;
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<strong>Subject:</strong>[RE-wrenches] Is There an "Off-grid" (i.e. constant voltage) Version of Microinverters?
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It has been a while since I installed a PV system, so I apologize in advance for my ignorance wrt product availability.
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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.
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I can explain more about the application to anyone who has an interest.
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Does such an component exist?
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Thanks in advance for any help.
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<p>Peter T. Parrish, Ph.D.<br>President, California Solar Engineering<br>1107 Fair Oaks Blvd Ste. 351<br>South Pasadena, CA 91030<br><a href="tel:(323)%20839-6108" rel="noopener" target="_blank">(323) 839-6108</a><br></p>
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<p>Peter T. Parrish, Ph.D.<br>President, SolarGnosis<br>1107 Fair Oaks Blvd Ste. 351<br>South Pasadena, CA 91030<br>(323) 839-6108<br></p>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><a name="m_-6141815603957107365_SignatureSanitizer__MailAutoSig"><b>Kirk Herander / </b></a><b><a href="mailto:kirkh@vermont.solar" title="Send an email to kirkh@vermont.solar; Send an email to kirkh@vermont.solar" style="color:blue" target="_blank">kirkh@vermont.solar</a></b></span></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><b>Owner|Principal, VT Solar, LLC</b></span></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><b><i>Celebrating our 31<sup>st</sup> Anniversary 1991-2022!!</i></b></span></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><a href="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" title="Click to open in a new window or tab
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