Posted by bealiba on June 18, 2008, 7:31 pm
> ohara...@mindspring.com wrote
> >> beal...@gmail.com wrote:
> >> > Acetic cure RTV is harmful to copper and soldered
> >> > joints. Use a neutral cure product
> >> I would usually agree but in this case the acetic acid
> >> will pass through the acrylic plastic, slowly depending
> >> on the thickness. The existing glass and ETA (?) cell
> >> encapsulant should protect the panel, at least until
> >> the acid goes away.
> >> I have done this on a panel and it worked well. The guy
> >> I did it for says his panel is still running after about
> >> 5 years.
> >> Duane
> >> --
> >> Home of the $35 Solar Tracker Receiver
> >> http://www.redrok.com/led3xassm.htm [*]
> >> Powered by \ \ \ //|
> >> Thermonuclear Solar Energy from the Sun / |
> >> Energy (the SUN) \ \ \ / / |
> >> Red Rock Energy \ \ / / |
> >> Duane C. Johnson Designer \ \ / \ / |
> >> 1825 Florence St Heliostat,Control,& Mounts |
> >> White Bear Lake, Minnesota === \ / \ |
> >> USA 55110-3364 === \ |
> >> (651)426-4766 use Courier New Font \ |
> >> red...@redrok.com (my email: address) \ |http://www.redrok.com
> >> (Web site) ===
> > Get some of that material that is used to tint car windows except it
> > is clear.
> > Use Saran Wrap, I am serious.
> > Buy some of that thin flexible material used for windows on boat
> > canvas.
> > Google clear film.
> Yeah I was thinking about trying that.
> I appreciate the more complicated answers but I really don't have a place
> to do the solvent thing -- although it sounds like the best long term
> solution.
> was looking at 'clear saftey film'
> Clear Safety Window Film acts like a steel curtain to hold shattered
> glass in place to protect you and your family from serious harm. It is
> invisible, yet it blocks 99% of the UV rays that cause fading.
> So blocking UV rays .. i've read that is OK and i've read that is bad.
> My search skills must be suffering because you'd think that would come up
> more often.
> Do I want to block the UV spectrum or not?
> cheers again
> -z
http://s78.photobucket.com/albums/j103/GGhio/
See "Wave Length" pic.
The loss is small at the UV end (300nm)
Posted by bealiba on June 18, 2008, 2:00 am
> beal...@gmail.com wrote:
> > Acetic cure RTV is harmful to copper and soldered
> > joints. Use a neutral cure product
> I would usually agree but in this case the acetic acid
> will pass through the acrylic plastic, slowly depending
> on the thickness. The existing glass and ETA (?) cell
> encapsulant should protect the panel, at least until
> the acid goes away.
> I have done this on a panel and it worked well. The guy
> I did it for says his panel is still running after about
> 5 years.
> Duane
> --
> Home of the $35 Solar Tracker Receiver
> http://www.redrok.com/led3xassm.htm [*]
> Powered by \ \ \ //|
> Thermonuclear Solar Energy from the Sun / |
> Energy (the SUN) \ \ \ / / |
> Red Rock Energy \ \ / / |
> Duane C. Johnson Designer \ \ / \ / |
> 1825 Florence St Heliostat,Control,& Mounts |
> White Bear Lake, Minnesota === \ / \ |
> USA 55110-3364 === \ |
> (651)426-4766 use Courier New Font \ |
> red...@redrok.com (my email: address) \ |http://www.redrok.com (Web site)
===
Good to know. Still I have seen electronics destroyed by acetic cure
RTV. If it has been tested then it is worth a try.
Posted by renewable_sources on June 17, 2008, 8:58 am
You might consider trying a thin coat of polyester resin (AKA clear
cast) There are epoxy resins that may work too but may yellow over
time. It would seal the cracks & add only a minimal thickness of
material to reduce absobsion)
Good luck
Bob
>Heya
>I picked up a Coleman CL 3600 solar panel kit for next to nothing.. they
>are 3 18 watt panels -- two are in perfect shape, but one has the glass
>badly spidered.
>Its not broken broken.. just cracked badly and the cell itself seems OK.
>Just wondering if you guys had used any kind of magic spray that would seal
>up the cracks and keep the thing water proof. I could try to replace it
>but its encased in this housing that doesn't look like it was ever meant to
>be taken apart.
>I just want to keep the water out and not lose too much light penetration
>while not risking damaging the cell itself by replacing the glass.
>I have some POR-15 high temp clear coat I use on aluminum engine heads etc
>to keep the corrosion from coming back after polishing.. dono what it would
>do on the glass.
>Any other ideas on magic spray/coating ?
>cheers
>-zachary (working on solar while the sun evaporates all my hydro-electric
>water)
Posted by Morris Dovey on June 17, 2008, 9:37 am
z wrote:
> I just want to keep the water out and not lose too much light penetration
> while not risking damaging the cell itself by replacing the glass.
>
> I have some POR-15 high temp clear coat I use on aluminum engine heads etc
> to keep the corrosion from coming back after polishing.. dono what it would
> do on the glass.
>
> Any other ideas on magic spray/coating ?
It might be worthwhile to visit the nearest auto glass shop and ask this
question. Seems to me that I've seen a number of products advertized as
capable of repairing dings and cracks in windshields. One of those
products might do the job, and I'd expect the folks in the glass shop
might know which are good and which aren't worth wasting money on.
--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/
XML site map
> >> beal...@gmail.com wrote:
> >> > Acetic cure RTV is harmful to copper and soldered
> >> > joints. Use a neutral cure product
> >> I would usually agree but in this case the acetic acid
> >> will pass through the acrylic plastic, slowly depending
> >> on the thickness. The existing glass and ETA (?) cell
> >> encapsulant should protect the panel, at least until
> >> the acid goes away.
> >> I have done this on a panel and it worked well. The guy
> >> I did it for says his panel is still running after about
> >> 5 years.
> >> Duane
> >> --
> >> Home of the $35 Solar Tracker Receiver
> >> http://www.redrok.com/led3xassm.htm [*]
> >> Powered by \ \ \ //|
> >> Thermonuclear Solar Energy from the Sun / |
> >> Energy (the SUN) \ \ \ / / |
> >> Red Rock Energy \ \ / / |
> >> Duane C. Johnson Designer \ \ / \ / |
> >> 1825 Florence St Heliostat,Control,& Mounts |
> >> White Bear Lake, Minnesota === \ / \ |
> >> USA 55110-3364 === \ |
> >> (651)426-4766 use Courier New Font \ |
> >> red...@redrok.com (my email: address) \ |http://www.redrok.com
> >> (Web site) ===
> > Get some of that material that is used to tint car windows except it
> > is clear.
> > Use Saran Wrap, I am serious.
> > Buy some of that thin flexible material used for windows on boat
> > canvas.
> > Google clear film.
> Yeah I was thinking about trying that.
> I appreciate the more complicated answers but I really don't have a place
> to do the solvent thing -- although it sounds like the best long term
> solution.
> was looking at 'clear saftey film'
> Clear Safety Window Film acts like a steel curtain to hold shattered
> glass in place to protect you and your family from serious harm. It is
> invisible, yet it blocks 99% of the UV rays that cause fading.
> So blocking UV rays .. i've read that is OK and i've read that is bad.
> My search skills must be suffering because you'd think that would come up
> more often.
> Do I want to block the UV spectrum or not?
> cheers again
> -z