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  Topic Review (Newest First)
2 Weeks Ago 10:17 AM
Maine Sail
Re: solar recommendations - question for MAINESAIL

Quote:
Originally Posted by bhcva View Post
Maine....Your article on Solbian installs shows an installation on a boat forward of two aft stays....can you comment on what performance impact, if any, stay shadowing has had?

Thanks, Bruce
Back stays have much less impact on solar performance compared to other types of shade such as a boom or radar pole etc...... The light easily bends around them and they really create minimal performance issues compared to other types of shading..
2 Weeks Ago 09:44 AM
aeventyr60
Re: solar recommendations

^You may want to consider the affect of your boat pointing East in the morning and West in the afternoon...the stay 'shadow' is insignificant....best is N or S...for the pointy end....The sun seems to travel in a certain arc...and the boat at anchor will have a mind of it's own....anyway.
2 Weeks Ago 09:03 AM
bhcva
Re: solar recommendations - question for MAINESAIL

Maine....Your article on Solbian installs shows an installation on a boat forward of two aft stays....can you comment on what performance impact, if any, stay shadowing has had?

Thanks, Bruce
2 Weeks Ago 06:27 PM
CharlzO
Re: solar recommendations

Quote:
Originally Posted by andyselzn View Post
@Charlz0, which 100w kit at Renogy?

@Davester, which 50w panel?

There are variations between mono vs poly etc etc
Standing corrected, I went back and looked at my order history through Amazon (just caught this thread update, might as well make my correction for any future reference)

Amazon.com : Starter Kit 100W: 100W Solar Panel UL 1703 listed+ 30A PWM Charge Controller + 2 20' MC4 Adapter Cable + Uniquely Designed Z Bracket Mounts : Solar Panel Kit For Homes : Patio, Lawn & Garden Amazon.com : Starter Kit 100W: 100W Solar Panel UL 1703 listed+ 30A PWM Charge Controller + 2 20' MC4 Adapter Cable + Uniquely Designed Z Bracket Mounts : Solar Panel Kit For Homes : Patio, Lawn & Garden



Was the kit I purchased. Going on my 2nd year with it, still working flawless, even though I don't use nearly enough juice to drain the batteries down that far each time I'm out. Plotter/VHF and charging phones and things is the most of it, though I have an LCD 24" TV that I use to watch Netflix on from time to time, off an inverter. Never had an issue though. Still have the thin plastic film on the outside of the frame, come to think of it.
2 Weeks Ago 06:39 AM
seaner97
Re: solar recommendations

Quote:
Originally Posted by mitiempo View Post
And their price shows it - more than twice the price of a comparable wattage flex panel.
Actually similar in price to the Ganz and many of the other highly rated "walk on" panels. I decided to go with them and am spectacularly happy with my two 38 watt panels charging my 4 group31s in my house bank.
07-16-2014 09:36 PM
mitiempo
Re: solar recommendations

Quote:
Originally Posted by seaner97 View Post
Any experience with Aurinco? They look pretty tough and are now all made in Anacortes.
And their price shows it - more than twice the price of a comparable wattage flex panel.
07-16-2014 08:37 PM
miatapaul
Re: solar recommendations

Mainesail is now a Solbain dealer, and they look like top notch stuff. Semi rigid, he has an install on a Bimini, almost invisible.

Installing A Solbian Solar Panel Photo Gallery by Compass Marine How To at pbase.com
07-16-2014 12:57 PM
seaner97
Re: solar recommendations

Any experience with Aurinco? They look pretty tough and are now all made in Anacortes.
07-08-2014 06:29 PM
fmueller
Re: solar recommendations

Quote:
Originally Posted by MedSailor View Post
It is my understanding that polycrystalline or "thin film" panels are more shade tolerant than standard cells. Is it possible that they are superior in shady climates and boats with more shade issues?

It was also my understanding that if enough of the cells of a monocrystalline panel were shaded, the output would drop to zero because it was below charging voltage. (each cell contributes a finite amount of voltage). Is this shading issue solved with MPPT controllers?

MedSailor
Poly and thin film are two different things. Thin film are, in fact, more tolerant of diffuse radiation, though they have lower performance overall.

On any Mono or poly crystalline module, shading any one cell completely will drop the output of that string of cells to zero. Most modules (panels) consist of two or three parallel strings of cells so as few as three totally shaded cells will take the output to zero.

An MPPT controller will help when voltage is low because of poor sun angle etc, but if a cell is fully shaded it won't pass any current and so neither will that whole string. A charge controller can't help you around that.

~fortunat
07-08-2014 06:09 PM
davester
Re: solar recommendations

Quote:
Originally Posted by andyselzn View Post
@Charlz0, which 100w kit at Renogy?

@Davester, which 50w panel?

There are variations between mono vs poly etc etc
I bought the mono panel because it is a couple inches shorter. Yesterday I picked up some pieces of aluminum flat bar and angle bar at home depot to mount it.
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