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Post by Rana on Aug 26, 2019 2:15:05 GMT
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Post by tattoo on Aug 26, 2019 2:50:56 GMT
Why would anyone want to click on a link these days with no description other than the title..........
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Post by bupkis on Aug 26, 2019 16:37:25 GMT
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russ
Solar Advocate
Posts: 63
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Post by russ on Aug 26, 2019 23:49:25 GMT
This is the Renogy forum...
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Post by mediadogg on Aug 27, 2019 13:06:52 GMT
I clicked on the link and found the information provided in the video (created by Morningstar Corporation) to be very detailed and complete. Although I have to say, that even as an avid DIYer with many years of projects, electronics experience and home ownership, I was still intimidated somewhat by the amount of detail. But if you want to do it "right" and also understand why, then presentations like that one will certainly help you. I think most DIY projects can be quite successful without designing at that level of detail. If you are a vendor, charging premium prices for your products and services, you have to make sure to squeeze the maximum value out of the system. If you are doing the work yourself, you can afford to be less efficient and use the DIY savings to buy more panels and batteries to compensate for the inefficiency of your design.
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Post by tattoo on Aug 27, 2019 14:19:34 GMT
^^^^^ Awesome info dogg.....^^^^^^^^ Thanks for that..........
No need in me watching then....... I like simple...........
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Post by bupkis on Aug 27, 2019 16:08:57 GMT
I like that both MS and altE discuss/use days of autonomy, battery storage temp, battery eff etc that Renogy ignores. Beginners don't get the concept of panel angling, location/time of year, poor weather etc. I don't recall any of them factoring in shade. Estimating usage is normally a guess, altE's load calculator/video can help there www.altestore.com/store/calculators/load_calculator/ |
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Post by mediadogg on Aug 27, 2019 16:43:14 GMT
It is absolutely good to know about those things. Knowledge is power (pun intended  ). But to give an example of my case, my main house roof is so high that the expense of installing panels is prohibitive, and in winter, they will be caked up with snow most of the time. So, my "mini-systems" are all in places where I can reach them to keep the snow off in winter, and where they get good sun without expensive mounting hardware. They lie flat on whatever pitch that section of roof has got, on homemade mounts that allow air flow for ventilation but are low enough and heavy enough to avoid airfoil action. Even if I knew the perfect angles, I couldn't afford to mount them properly. I do pay attention to shading, and all panels have been placed where I get as many hours of un-shaded sun as possible, and where I get uneven shade, I use parallel wiring instead of series. When the shading hits all the panels at the same time, I still prefer series wiring. |
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Post by tattoo on Aug 27, 2019 19:21:45 GMT
I do pay attention to shading, and all panels have been placed where I get as many hours of un-shaded sun as possible, and where I get uneven shade, I use parallel wiring instead of series. When the shading hits all the panels at the same time, I still prefer series wiring. I try to pay attention to shading but with so many trees it's tough..... I have 8 panels in parallel and series and 2 and 2 in series and I can switch them on and off when needed...... Plus the 8 and the 2 and 2 are at way different angles...... The 2 and 2 are a better angle for winter sun.....
So far it's working out great.........
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). But to give an example of my case, my main house roof is so high that the expense of installing panels is prohibitive, and in winter, they will be caked up with snow most of the time. So, my "mini-systems" are all in places where I can reach them to keep the snow off in winter, and where they get good sun without expensive mounting hardware. They lie flat on whatever pitch that section of roof has got, on homemade mounts that allow air flow for ventilation but are low enough and heavy enough to avoid airfoil action. Even if I knew the perfect angles, I couldn't afford to mount them properly.