https://eternalsunspire.com/app/uploads/181219-Temperature-control-box3-1280x854.jpg
From: Adam Moffett Sent: Friday, June 4, 2021 1:59 PM To: [email protected] Subject: Re: [AFMUG] solar panels Yeah, I suppose some kind of continuous load that will take whatever the panel can put out....like a big resistor with a heat sink. Then meter the WH output. Do it in a dark room and have a constant light source that's the same for each panel being tested. Mount each sample in the same position. Sounds simple in theory, but I ain't got the time for that stuff. On 6/4/2021 3:54 PM, Mathew Howard wrote: It seems like it should be relatively simple to build a test setup where you could just shine some kind of a light on it, and measure the output compared to a new panel... whether or not it would be worth the bother for anybody to do that, is another matter. On Fri, Jun 4, 2021 at 2:42 PM Adam Moffett <[email protected]> wrote: There must be a way... My Father-in-law works at a lab at Cornell where they wanted a number of panels with all exactly the same efficiency for a research project. Not sure the test method, but obviously they figured one out. On 6/4/2021 3:05 PM, Steve Jones wrote: How do you guage a level of used on solar panels? Age? Visual issues? Can you test efficiency reliably, like set up a uv light and specified distance in dark room and measure output? As they age what's the curve look like on efficiency loss? On Fri, Jun 4, 2021, 1:12 PM David Coudron <[email protected]> wrote: What you see on snail roads. I am guessing they are smears of some kind that affect the clear top layer? Get Outlook for iOS ------------------------------------------------------------------------ From: AF <[email protected]> on behalf of Bill Prince <[email protected]> Sent: Friday, June 4, 2021 1:09:14 PM To: [email protected] <[email protected]> Subject: Re: [AFMUG] solar panels Some of the used ones list defects in the description. Saw one that said "cracked", and another said "snail tracks". WTH are snail tracks? bp <part15sbs{at}gmail{dot}com>On 6/4/2021 11:05 AM, Chuck McCown via AF wrote: Ah, they are used. I wonder how much used... From: Robert Sent: Friday, June 4, 2021 11:59 AM To: [email protected] Subject: Re: [AFMUG] solar panels I haven't seen anything that will beat this. $45/panel for 224watts. https://shop.signaturesolar.us/products/224w-60cell-silver-poly-solar-panel-by-sharp On 6/4/21 10:37 AM, Chuck McCown via AF wrote: Who has the best deals for solar panels these days? ---------------------------------------------------------------------- -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -------------------------------------------------------------------------------- -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
