Best solar panels for the buck - Page 2 - SailNet Community
 2Likes
Reply
 
LinkBack Thread Tools
post #11 of 60 Old 01-12-2012
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,853
Thanks: 0
Thanked 113 Times in 104 Posts
Rep Power: 12
   
Pete

What are you paying for the panels?

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Sponsored Links
Advertisement
 
post #12 of 60 Old 01-13-2012 Thread Starter
Beneteau 411
 
Join Date: Nov 2010
Location: Stuart, FL
Posts: 412
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
I'd be interested in recommendations for MPPT charge controllers. At the moment, I'm comparing Blue Sky SB3024iL with Morningstar TS-MPPT-45. The Morningstar has a standard RS232 interface to control and monitor operation via a PC. The Morningstar claims a 99% efficiency vs 97% claimed for the Blue Sky. I'm sure there are many more significant differences, but overall the Morningstar seems to have a greater range of Voltages and current with more flexibility. For example, the Morningstar works with nominal PV voltages of 12, 24, and 48 with maximum current output of 45 Amps. The Blue Sky works with nominal PV voltages of 12 and 24 with max currents of 32 and 12 Amps respectively.
Pete
prroots is offline  
post #13 of 60 Old 01-13-2012
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,853
Thanks: 0
Thanked 113 Times in 104 Posts
Rep Power: 12
   
You should read the data sheets carefully. The nominal voltages of 12 and 24 refer to nominal battery voltage, not solar voltages. The Blue Sky 3024iL will output 40 amps @ on a nominal 12 volt system. Its maximum input voltage is 57 volts max with a recommended max 45.6 volts from the panels.

see next post

Brian
Living aboard in Victoria Harbour

Last edited by mitiempo; 01-13-2012 at 10:58 AM.
mitiempo is offline  
 
post #14 of 60 Old 01-13-2012
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,853
Thanks: 0
Thanked 113 Times in 104 Posts
Rep Power: 12
   
3024iL data sheet
Attached Thumbnails
1.jpg  

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
The Following User Says Thank You to mitiempo For This Useful Post:
scgator2001 (06-25-2014)
post #15 of 60 Old 01-13-2012 Thread Starter
Beneteau 411
 
Join Date: Nov 2010
Location: Stuart, FL
Posts: 412
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
We just order two 24 Volt / ~200 Watt panels from SolarBlvd to supply our four golf cart batteries. They are "B grade" panels which should have met a spec of 210 Watts, but didn't. The cost was $200 each ie, $1.00/watt. We also purchased the Morningstar TS-MPPT-45 controller for $370. We splurged on the controller, but really like it's flexibility which will come in handy if we ever have to change out the panels for something else down the road; they handle nominal 12-48 volt panels.
Pete
prroots is offline  
post #16 of 60 Old 01-13-2012
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,853
Thanks: 0
Thanked 113 Times in 104 Posts
Rep Power: 12
   
Are they the Kyocera panels?

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
post #17 of 60 Old 01-13-2012 Thread Starter
Beneteau 411
 
Join Date: Nov 2010
Location: Stuart, FL
Posts: 412
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Quote:
Originally Posted by mitiempo View Post
Are they the Kyocera panels?
Nope, SolarBlvd private labels them with their own name. They won't disclose the name of the original manufacturer.
Pete
Mystic1 likes this.
prroots is offline  
post #18 of 60 Old 01-14-2012 Thread Starter
Beneteau 411
 
Join Date: Nov 2010
Location: Stuart, FL
Posts: 412
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Having bought my panels and controller, I'm now turning my attention to the design of a mount to be placed on top of my existing dinghy davits. My thoughts so far are:
- construct an aluminum frame from 1-1/2 X 2 inch angle such that two panels drop into it oriented end-to-end and placed athwartship on top of dinghy davits. Overall size will be 116" X 39"
- build a support structure from 1" OD stainless tubing that creates a horizontal tube 67" long in the athwart ship direction and approximately 20" above the dinghy davits. The shape will be that of an inverted 'U' with right angle corners to maximize width. This height will minimize shading from bimini and provide clearance to raise and lower outboard from its mount.
- attach the frame to the tube using 2 or 3 of those plastic rail clamps available from West Marine (can't find them anywhere else). This allows panels to be tilted in the fore and aft direction and isolates aluminum frame from stainless tube.
- weld a perforated aluminum semi-circle to underside of frame just outside the 1" stainless support structure. A tab on stainless tube will allow the panel to be locked at the desired angle. Use a stainless aircraft pin to lock.

My concerns at this point is:
1. the amount of overhand of the panels which amounts to 24-1/2 inches on either end. The frame will have to be stiff enough to support this. If the boat is pitching in heavy seas this could cause considerable flexing.
2. I'm hoping that the simple tilt lock mechanism will be stiff enough.

I've attached a crude hand-drawn sketch which hopefully will be worth a 1000 words! Comments and suggestions appreciated.
Pete
Attached Thumbnails
SolarMnt1.jpg  

Last edited by prroots; 01-14-2012 at 08:04 AM.
prroots is offline  
post #19 of 60 Old 01-15-2012 Thread Starter
Beneteau 411
 
Join Date: Nov 2010
Location: Stuart, FL
Posts: 412
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
The mount will include an aluminum frame made from angle. Can anyone recommend the type of aluminum for best strength and corrosion resistance? I'm wondering if it should be anodized. I want to be sure to include the type in the spec for the fabricator.
Pete
prroots is offline  
post #20 of 60 Old 01-15-2012
1982 Skye 51
 
obelisk's Avatar
 
Join Date: May 2008
Location: Somewhere between NZ and the Chesapeake Bay
Posts: 378
Thanks: 3
Thanked 6 Times in 6 Posts
Rep Power: 12
 
Quote:
Originally Posted by aeventyr60 View Post
You won't go wrong in buying Kyocera solar panels. had them on my boat for 12 years...still putting out lots of clean power.
agreed, I love mine and would buy them again. Also, my SolarBoost 2000e (blue sky) charge controller is amazing. My Kyocera 130W panels are rated to 7.44 amps but with the SolarBoost 200e are putting many more amps into the batteries. they claim their design improves performance by 20% and I was skeptical too until I saw the amps the solar panel was putting out and compared it to the amps the batteries were receiving. MAGIC!
scgator2001 likes this.

"The notion of life implies a certain absoluteness of self-enjoyment." -Alfred North Whitehead


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

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Solar Panels dougshipl Gear & Maintenance 20 05-04-2012 11:28 PM
Solar Panels? LandLocked66c Electrical Systems 18 01-30-2010 11:32 AM
More on solar panels. SVDistantStar Gear & Maintenance 47 04-04-2008 07:58 AM
Solar Panels bottleinamessage Jeanneau 0 08-16-2007 07:10 AM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome