I guess I presumed it was turning those photons into electricity rather than heat. Hard to imagine it generates more heat than the smoke plexiglass, but I never checked. It would make sense since it tended to unwarp when slid out of the sun. If I put something underneath it would have to be really then so the panel still slides underneath. Dave
> On Dec 5, 2020, at 3:24 PM, Riley Anderson <svfreighttr...@gmail.com> wrote: > > David, > > My guess is the heat generated from the solar panel warped the plexiglass. > Those flexible panels can produce a lot of heat. Some people place a sheet of > corrugated plastic under them to help with airflow. > > > On Sat, Dec 5, 2020, 2:06 PM David Knecht <davidakne...@gmail.com > <mailto:davidakne...@gmail.com>> wrote: > The smoked plexiglass sliding hatch on my boat seems to be warped and I am > not sure why. For several years, I have had a thin flexible 50W solar panel > velcro’d to the top of it. The spacing between the panel and the bridge that > supports the traveller was initially tight, so I ground the fiberglass with a > Dremel so the panel would fit underneath as it slid. But I noticed that > however much I ground it, the spacing would decrease over time, so that last > summer, I had to lean on the panel to get it to fit underneath. Once out of > the sun, it would relax some, but the situation got worse as the summer wore > on. I pulled the whole sliding panel and brought it home and the plexiglass > is clearly warped. I can’t see how the solar panel on top would cause that > to happen because most of the time, most of the plexiglass is out of the sun, > covered by the solar panel. I guess I am going to have to replace the entire > panel as it is now seriously warped in some areas. If anyone has any > thoughts on what caused this and what to do about it, I would appreciate the > advice. Thanks- Dave > > S/V Aries > 1990 C&C 34+ > New London, CT > > > > 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 > <https://www.paypal.me/stumurray> Thanks - Stu > <pastedGraphic.tiff><pastedGraphic.tiff>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 Dr. David Knecht Professor of Molecular and Cell Biology University of Connecticut 91 N. Eagleville Rd. Storrs, CT 06269-3125
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
