<div dir="ltr"><div class="gmail_default" style="font-family:times new roman,serif;font-size:large">I noticed none have addressed the question of what is the minimum energy needs.  Is the house all dc or is it AC/DC or all AC?</div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large">During critical periods what really needs power?  Can any of these super-critical loads be powered not on electricity?  in 1992 I presented a paper that said in Mpls MN,  during a ten-year period, the longest no-see-sun was 7 days. Can the super-critical loads have a separate battery on a 7-day clock?   How is the water heated?   How is the house heated?  Several years ago, perhaps 30 yrs. 3-M corp had a Pelter-Seebeck  device that could power a 1/4 hp motor off a furnace flame.   </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Mar 25, 2023 at 9:21 AM Drake Chamberlin 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 style="font-size:10pt;font-family:Verdana,Geneva,sans-serif">
<p><span style="font-size:12pt">That quantifies it. With 746 W being 1 horsepower, a top cyclist can produce a bit less than 1 horsepower for several minutes before exhaustion. </span></p>
<p><span style="font-size:12pt">This demonstrates how much power a solar array produces. A moderate array produces more power than is expended in a bicycle race with a team of seasoned athletes, even more power than a team of work horses. </span></p>
<p><span style="font-size:12pt">Thanks,</span></p>
<p><span style="font-size:12pt">Drake</span></p>
<p><br></p>
<p><em>Drake Chamberlin</em></p>
<p><em>Athens Electric LLC</em></p>
<p><em>Ohio Electrical Contractor’s License 44810</em></p>
<p><em>CO Master Electrician’s License 4526</em></p>
<p><em>NABCEP Certified PV Installation Professional</em></p>
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<p id="m_5473175082296943639reply-intro">On 2023-03-23 18:19, Kienan Maxfield via RE-wrenches wrote:</p>
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<div style="display:block">On the topic of producing energy by pedaling...</div>
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<div style="font-weight:400;font-size:11px;overflow:hidden;text-overflow:ellipsis;text-align:left"><a style="text-decoration:none" href="https://m.youtube.com/watch?v=S4O5voOCqAQ" rel="noopener noreferrer" target="_blank"><span style="color:rgb(162,162,169)">youtube.com</span></a></div>
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<br>Cheers,
<div>Kienan</div>
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<p style="margin:0px;box-sizing:border-box"><strong style="box-sizing:border-box;background-color:rgba(255,255,255,0)">Green-Go Solar Distribution LLC</strong></p>
<p style="margin:0px;box-sizing:border-box"><strong style="box-sizing:border-box;background-color:rgba(255,255,255,0)">Maxfield Solar LLC (installation and consulting company)</strong></p>
<p style="margin:0px;box-sizing:border-box"><strong style="box-sizing:border-box"><a style="margin:0px;box-sizing:border-box;background-color:rgba(255,255,255,0)" href="https://maxfieldsolar@hotmail.com/" rel="noopener noreferrer" target="_blank">maxfieldsolar@hotmail.com</a></strong></p>
<p style="margin:0px;box-sizing:border-box"><strong style="box-sizing:border-box;background-color:rgba(255,255,255,0)"><span>(801) 631-5584</span>(Cell)</strong></p>
<p style="margin:0px;box-sizing:border-box"><strong style="box-sizing:border-box"><span style="margin:0px;text-decoration:underline;background-color:rgba(255,255,255,0);display:inline">www.distribution.solar</span></strong></p>
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<blockquote type="cite" style="padding:0px 0.4em;border-left:2px solid rgb(16,16,255);margin:0px">On Mar 16, 2023, at 4:50 PM, jay via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br><br></blockquote>
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<div dir="ltr">HI Brad,
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<div>I was just about to hit send on those exact wattages, yes completely agree.</div>
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<div>As a sort of joke,  the self discharge of the batteries is probably more than what she could make in a day.</div>
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<div>Jay</div>
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<div>On Mar 16, 2023, at 4:29 PM, Bradley Bassett via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>
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<div>I tried this back in the 1970's with an exercise bike and a high efficiency generator (still have this if anyone wants it). If I pushed hard I could get it up to 200W, but only sustain about 100W. The only time I used it is when my battery was depleted and I wanted to watch TV. I had a 12VDC 5" B&W TV (so cute), so I would pedal like crazy during the commercials and it would just make it to the next commercial. It was way too loud to do it while watching. I eventually got a generator setup from Backwoods. </div>
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<div>Brad</div>
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<div dir="ltr">On Thu, Mar 16, 2023 at 3:11 PM Ray Walters via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">As I recall from pushing the "wayback" button, Backwoods and Real Goods <br>used to sell something like that in the 90s.  I would only see a <br>pyschological benefit, based on the system size. I recall that the <br>charge rate was less than 50 watts, so its really not going to be worth <br>wiring into the system.  Maybe she could do what several folks have <br>done: power a TV while you pedal.  Anyway, here is device that might do <br>it:   <a href="https://www.econvergence.net/" rel="noopener noreferrer" target="_blank"> https://www.econvergence.net/</a><br><br>Ray Walters<br>Remote Solar<br><br>On 3/16/2023 3:58 PM, Larry Brown via RE-wrenches wrote:<br>> Wrenches<br>><br>> I have a client that we did an off grid system for about 4 years ago<br>> The system is performing well<br>> The client would like to keep charged her batteries in the winter with her stationary bicycle operating a small generator<br>> Right now she uses a grid connection that was available and she turns on a breaker if needed to charge the batteries in the winter through the inverter<br>> When the batteries are fully charged she turns the breaker back off<br>> No need for any back up other times of year<br>> That is the only use of the grid<br>><br>> Her request was to be off grid<br>> This set up eliminated the need for her to have a generator for winter low light conditions<br>> So far all is working as designed<br>> But there is talk of adding a gas generator so that if the grid is down, there is a back up available<br>>   <br>> The system has 16- AGM Concorde SunXtener Batteries configured in 2 strings of 8 batteries per string<br>> They are PVX 3050T 6 volt batteries operating at 48VDC<br>> They are charged from the PV Array by 2- Schneider Conext MPPT 80 600 Charge Controllers<br>> The system has a Schneider Conext XW+ 5548 Single Inverter<br>><br>> Any thoughts or ideas of what equipment can be matched with a stationary bicycle that might give a trickle charge to the battery bank<br>> Anyone ever played with setting this up?<br>> She wants to try this out and see what is possible<br>> Get some winter exercise and perhaps keep the batteries as close to full without using the grid or a back up gas generator<br>><br>> All suggestions welcome<br>><br>> Thanks<br>> Larry<br>><br>> Larry Brown<br>> Sun Mountain<br>><br>><br>><br>><br>><br>> _______________________________________________<br>> List sponsored by Redwood Alliance<br>><br>> Pay optional member dues here: <a href="http://re-wrenches.org/" rel="noopener noreferrer" target="_blank"> http://re-wrenches.org</a><br>><br>> List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" rel="noreferrer" target="_blank"> RE-wrenches@lists.re-wrenches.org</a><br>><br>> Change listserver email address & settings:<br>> <a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noopener noreferrer" target="_blank"> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>><br>> There are two list archives for searching. When one doesn't work, try the other:<br>> <a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" rel="noopener noreferrer" target="_blank"> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br>> <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" rel="noopener noreferrer" target="_blank"> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br>><br>> List rules & etiquette:<br>> <a href="http://www.re-wrenches.org/etiquette.htm" rel="noopener noreferrer" target="_blank"> http://www.re-wrenches.org/etiquette.htm</a><br>><br>> Check out or update participant bios:<br>> <a href="http://www.members.re-wrenches.org/" rel="noopener noreferrer" target="_blank"> http://www.members.re-wrenches.org</a><br>><br>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>Pay optional member dues here: <a href="http://re-wrenches.org/" rel="noopener noreferrer" target="_blank"> http://re-wrenches.org</a><br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" rel="noreferrer" target="_blank"> RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noopener noreferrer" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>There are two list archives for searching. When one doesn't work, try the other:<br><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" rel="noopener noreferrer" target="_blank">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" rel="noopener noreferrer" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenc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