Coroplast won't hold up. It doesn't survive UV and when hot gets very soft. If you use a backing, best to use Polycarbonate sheet. It is what they use for green house panels.
This is what I have done and it is working well. I learned the hard way and destroyed one of my panels before that. Backing vs no backing is a dice roll. I have a friend who has no backing and his panels are doing OK. In my situation I tried coroplast backing and that failed in the first season. What I do know is flexible panels are VERY fragile and will tolerate zero abuse. The faster they are bonded to something stiff, the less likely you have of cracking and destroying cells. It does not take much abuse to kill an entire panel. As they say...YMMV On Mon, Jan 25, 2021 at 6:44 AM Dave S via CnC-List <cnc-list@cnc-list.com> wrote: > Joel > Had thought (briefly) about heat mitigation, but like you I enjoy a 5 > month season here in the Toronto area, and I doubt it's the same issue it > might be in South Florida or elsewhere. To Josh's point - the air is > moving under the bimini. I'm more concerned about the weight on the > unsupported fabric over time. > > Worthwhile? Dunno yet. I haven't tested the setup, but really it > depends on your objective. The 33ii has space constraints for both > panels and batteries, and as a result my expectation is to extend the time > between charging, not to eliminate charging. We'll see. In theory, If I > were able to accommodate another 50w of reliable generation, windstar could > be 100% off the grid. > > Cost of the panel and controller is around C$500+ (you can verify on > Renogy.ca.) Battery choices are another consideration, and can get spendy > quickly.. I bought two lithium group 35s totalling 220ah. if you click > around on that blog you'll see further documentation and all the associated > arithmetic and (excessive...lol) reasoning. This area is new to me, I had > a lot of input from experienced folks on the list and much is shared there. > This includes an inventory of the power consumption by item on Windstar > which may save you (or your wife) some time. > > Dave 33-2 > > On Mon, 25 Jan 2021 at 00:54, Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Joel, >> >> When the panels heat up they become less and less efficient. That's the >> reason for controlling their heat if possible. If mounting on a fabric >> such as a Bimini I can't imagine that adding a coroplast backing would >> change the temperature very much since the fabric is already pretty thin. >> On the other hand if you were planning on mounting the panels to a hard >> surface then yes I believe there would be reason enough to add the >> backing. On my hard dodger installation I use adhesive felt pads. Now I >> wish I had though about coroplast. That's a great idea. >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> Solomons, MD >> >> On Sun, Jan 24, 2021, 16:56 Joel Delamirande via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >>> I’ve seen on YouTube not over heat your panels >>> They put a corrugated plastic panel underneath the solar panels >>> It let airflow >>> Let me know if it worth it and total cost for that project >>> My wife just added that to my list >>> >>> On Sun, Jan 24, 2021 at 4:49 PM Dave S via CnC-List < >>> cnc-list@cnc-list.com> wrote: >>> >>>> Installing a 175w solar panel on the bimini. >>>> >>>> >>>> https://cncwindstar.blogspot.com/2021/01/bimini-mods-for-solar-panel.html >>>> >>>> Dave >>>> Windstar 33-2 >>>> >>>> >>>> Thanks to all of the subscribers that contributed to the list to help >>>> with the costs involved. If you want to show your support to the list - >>>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>>> Thanks - Stu >>> >>> -- >>> Joel Delamirande >>> *www.jdroofing.ca <http://www.jdroofing.ca>* >>> >>> Thanks to all of the subscribers that contributed to the list to help >>> with the costs involved. If you want to show your support to the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> Thanks - Stu >> >> Thanks to all of the subscribers that contributed to the list to help >> with the costs involved. If you want to show your support to the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> Thanks - Stu > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks > - Stu
Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
