Solar Panels? - Page 2 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest Forums > Gear & Maintenance > Electrical Systems
 Not a Member? 
  #11  
Old 01-29-2010
Senior Member
 
Join Date: Jun 2006
Posts: 4,731
Thanks: 5
Thanked 16 Times in 16 Posts
Rep Power: 10
wind_magic has a spectacular aura about wind_magic has a spectacular aura about wind_magic has a spectacular aura about
Quote:
Originally Posted by LandLocked66c View Post
I need to research this more, but is it possible to run multiple panels in series to increase output? I know that most panels are just a bunch of cells run in series to give more output. Bigger panel means bigger output. If I end up with enough of these I may sacrafice a few for research!

If anything, my main goal would be to make sure my bank doesn't get 50% discharged at any given time. I don't know what my average weekend of use will consist of yet - hell I don't even have the boat in the driveway yet...
Land, you mean parallel, not series. If you run two of those panels in series it'll up the voltage to 24 volts and you probably don't want that, what you want is more amps, not more voltage.

If you want to start getting creative you can check into just buying solar cells and wire them up yourself, not hard to do and a lot less expensive than purchasing panels. Buy 'em by the case ...

__________________
What are you pretending not to know ?

Please support my
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #12  
Old 01-29-2010
Senior Member
 
Join Date: Dec 2009
Location: Long Beach CA
Posts: 235
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
COOL is on a distinguished road
Quote:
Originally Posted by mitiempo View Post
1.2 amp keeps up with your house loads? You can't be turning much on though.
That is true, only a couple of amps worth of lights,
and stereo for an hour or two here or there.
__________________
Islander 30 II 'COOL'

Last edited by COOL; 01-29-2010 at 08:09 PM.
Reply With Quote Share with Facebook
  #13  
Old 01-29-2010
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 8 Times in 8 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
I'd highly recommend you read the Primer on solar power on boats that I wrote on my blog. You can find it HERE.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #14  
Old 01-29-2010
LandLocked66c's Avatar
Sunsets and Warm Beer....
 
Join Date: Dec 2009
Location: The Bottom of a Pint Glass...
Posts: 2,111
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
LandLocked66c is on a distinguished road
Quote:
Originally Posted by wind_magic View Post
Land, you mean parallel, not series. If you run two of those panels in series it'll up the voltage to 24 volts and you probably don't want that, what you want is more amps, not more voltage.

If you want to start getting creative you can check into just buying solar cells and wire them up yourself, not hard to do and a lot less expensive than purchasing panels. Buy 'em by the case ...

Ah crap I didn't think about that! Yes series wouldn't work then... I'll look into the bulk panels... That would be a fun project perhaps.
__________________
1971 23' Oday Pop Top
S/V Frida

You can't steer a boat that isn't moving? Just like a life - P. Lutus
Reply With Quote Share with Facebook
  #15  
Old 01-29-2010
LandLocked66c's Avatar
Sunsets and Warm Beer....
 
Join Date: Dec 2009
Location: The Bottom of a Pint Glass...
Posts: 2,111
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
LandLocked66c is on a distinguished road
Quote:
Originally Posted by sailingdog View Post
I'd highly recommend you read the Primer on solar power on boats that I wrote on my blog. You can find it HERE.
Good write up SD! Thatnks for that!

Well, I have two of the small solar panels pictured on the first page, and the larger one that VW made for the Touregs that keep both their batteries up. It litterally is twice the output of the smaller. I'm going to dig up the specs on those soon.
__________________
1971 23' Oday Pop Top
S/V Frida

You can't steer a boat that isn't moving? Just like a life - P. Lutus
Reply With Quote Share with Facebook
  #16  
Old 01-29-2010
Senior Member
 
Join Date: Jun 2006
Posts: 4,731
Thanks: 5
Thanked 16 Times in 16 Posts
Rep Power: 10
wind_magic has a spectacular aura about wind_magic has a spectacular aura about wind_magic has a spectacular aura about
Quote:
Originally Posted by LandLocked66c View Post
I'll look into the bulk panels... That would be a fun project perhaps.
At approximately 0.80$us/watt it can be the frugal choice too. How much is a 100 watt panel these days ? I'm thinking probably more than 80$us. Of course you do have to buy bus wire, etc, to make the panel, but there are plenty of plans out there for how to construct your own solar panel if you have the time.

I like the idea of making panels because you can make them to fit unusual spaces, which is perfect on a boat. How many porthole shaped panels have you seen lately ?
__________________
What are you pretending not to know ?

Please support my
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #17  
Old 01-30-2010
nickmerc's Avatar
Senior Member
 
Join Date: Nov 2008
Location: O'Fallon, MO
Posts: 563
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 6
nickmerc is on a distinguished road
I make solar cells and solar panels for a living. I highly suggest making your own panel as others have stated it allows you alot of flexibilty in shape. Things to keep in mind:

1) Generally each cell will produce about 0.5VDC no matter the size
2) Amperage comes from the area of the cells
3) The cooler the cells the more efficient. They do get hot at peak power
4) Make sure the substrate the cells are mounted to is very rigid. Multi-crystaline cells do not like flexing too much. The thinner the cell the more flexible they are.
5) In a well made panel with minimal flexure the main point of failure are your electrical connections.
6) Not all cells are created equally. Multi-crystaline cells vary from 12% to 19% and higher. It depends on the processes used to make the cells, the grade of silicon used, and the quality/size of the collection lines.

Good luck and post pics!
________
Glass bongs

Last edited by nickmerc; 08-18-2011 at 05:56 AM.
Reply With Quote Share with Facebook
  #18  
Old 01-30-2010
LandLocked66c's Avatar
Sunsets and Warm Beer....
 
Join Date: Dec 2009
Location: The Bottom of a Pint Glass...
Posts: 2,111
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
LandLocked66c is on a distinguished road
Well you've got me curious! What is a good site to buy panels from?
__________________
1971 23' Oday Pop Top
S/V Frida

You can't steer a boat that isn't moving? Just like a life - P. Lutus
Reply With Quote Share with Facebook
  #19  
Old 01-30-2010
Senior Member
 
Join Date: Jun 2006
Posts: 4,731
Thanks: 5
Thanked 16 Times in 16 Posts
Rep Power: 10
wind_magic has a spectacular aura about wind_magic has a spectacular aura about wind_magic has a spectacular aura about
Quote:
Originally Posted by LandLocked66c View Post
Well you've got me curious! What is a good site to buy panels from?
Few random sites, I don't know anything about any of these places ...

Somebody wrote instructions for constructing a panel here - LINK
One place that seems to sell the solar cells by the box - LINK
One place that seems to sell them individually - LINK

Probably get them on Ebay too, buyer beware.
__________________
What are you pretending not to know ?

Please support my
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Charging with Solar Power Kevin Jeffrey Gear and Maintenance Articles 0 07-28-2003 08:00 PM
Choosing and Installing Solar Panels Sue & Larry Gear and Maintenance Articles 0 11-06-2000 07:00 PM


All times are GMT -4. The time now is 11:00 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012