Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 01-07-2008, 13:48   #31
Senior Cruiser
 
schoonerdog's Avatar

Cruisers Forum Supporter

Join Date: May 2004
Location: annapolis
Boat: st francis 44 mk II catamaran
Posts: 1,174
Images: 4
ID, Nanosolar is sold out for the next year or two, they are coming out with some sort of home integration system in the future as well. They are much cheaper (many times cheaper), I think they are rigid, but less in weight. They will not however be as efficient (probably 10% efficient). I had the option of putting these solar panels on as a hardtop and ended up not doing that because they would tend to be shaded by the boom. The configuration should allow me to never need a genset, though I do have high output alternators on the engine for emergencies.

Quote:
Originally Posted by Intentional Drifter View Post
Thanks, Schoonerdog. We're hoping to put much less time on the genset next year. Part of me is also hoping that Nanosolar won't be another unfulfilled promise. I'd love to have both cheaper and flexible solar panels available. With how they describe their new panels, it seems like it would be possible to cover the bimini with them.

ID
__________________

__________________
schoonerdog is offline   Reply With Quote
Old 17-07-2008, 09:27   #32
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Quote:
Originally Posted by Fishspearit View Post
Maybe some of you guys with battery monitors could post how many amp-hours a day your solar panels are putting out. I'm looking at a flat installation that I won't be able to adjust, and wondering what the thumbrule is. 1/3 of the wattage in amp-hours? I know it varies by location and time of year.
I did this measurement this past weekend. Two sunny days, 41*N latitude, 4 120W Kyocera panels mounted flat on a bimini, conventional PWM regulator. 135Ah the first day and 150Ah the second day. The regulator throttled the panels back on both days due to the batteries being full. I intentionally used a lot of electricity on the second day trying to keep the regulator at full load, but it still shut the panels down in the afternoon. Seems the 1/3 rule of thumb applied here.

Mark
__________________

__________________
colemj is offline   Reply With Quote
Old 17-07-2008, 19:07   #33
Registered User

Join Date: Jan 2007
Location: Fremantle Australia
Boat: Schioning 12.3 "Wilderness" Bi-Rig under construction
Posts: 558
Send a message via Skype™ to Whimsical
From my understanding of how the solar panels are usually connected, to the load side of the shunt, a battery monitor will only measure how much goes into and out of the batts. Funny thats probably why they call them battery monitors. The battery monitor wont count any amps that go direct from the panels to a consumer.

Mike
__________________
Whimsical is offline   Reply With Quote
Old 17-07-2008, 19:56   #34
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
My Trace 40 solar panel regulator counts the amp-hours generated by the panels. The measurements weren't taken from the battery monitor.

Mark
__________________
colemj is offline   Reply With Quote
Old 18-07-2008, 00:21   #35
Registered User

Join Date: Jan 2007
Location: Fremantle Australia
Boat: Schioning 12.3 "Wilderness" Bi-Rig under construction
Posts: 558
Send a message via Skype™ to Whimsical
Quote:
Originally Posted by colemj View Post
My Trace 40 solar panel regulator counts the amp-hours generated by the panels. The measurements weren't taken from the battery monitor.

Mark
Thats whats needed
Given it stopped early 1/3 does seem right. Coupled to a mppt controller you may even get 1/2 especially if at a more friendly lattitude
I think 500W is what I will be installing

Mike
__________________

__________________
Whimsical is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
No amps from solar controller Jumbyway Electrical: Batteries, Generators & Solar 5 16-06-2008 07:23
Controller for solar panels dennisjay Electrical: Batteries, Generators & Solar 1 13-03-2008 22:09
A GENERATOR AND SOLAR PANELS....... High Cotton Electrical: Batteries, Generators & Solar 20 06-03-2008 19:43
Where to mount solar panels? Rhythmsmith Electrical: Batteries, Generators & Solar 21 16-12-2007 13:52
Do You Need Solar Panels? StoutWench Electrical: Batteries, Generators & Solar 3 15-12-2005 21:33



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 07:11.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.