Cruisers Forum

Thread Tools Search this Thread Rate Thread Display Modes
Old 08-07-2018, 17:34   #1
Marine Service Provider
pbmaise's Avatar

Join Date: Jan 2007
Location: Langkawi, Malaysia
Boat: Jay Kantola - Trimaran 65 ft by 40 ft beam
Posts: 834
Orientation of solar panels to provide sail area?

I am looking at adding 6800 watts to the stern of my vessel to run a 48V DC air-conditioning system.

This will be a lot of fixed surface area which most people place flat.

I believe it might be possible to orientate these at an angle to provide effective sail area too.

The panels will cover a physical area 40 feet wide and 13 feet wide. Over the center hull I also already intending to angle panels to deflect rain to the sides.

It is angle of title of the 8 panels on each side that is my big question. I can also tilt the leading edge down or up and am also curious if that is a good idea.
pbmaise is offline   Reply With Quote
Old 08-07-2018, 17:41   #2
Registered User
Snowpetrel's Avatar

Join Date: Jul 2012
Location: Hobart
Boat: Alloy Peterson 40
Posts: 3,919
Re: Orientation of solar panels to provide sail area?

There was a trial of an electric catamaran called solar sailer in sydney harbour using a similar system. Probably not worth the problems on a big tri like yours.
My Ramblings
Snowpetrel is offline   Reply With Quote
Old 08-07-2018, 17:55   #3
Writing Full-Time Since 2014
thinwater's Avatar

Cruisers Forum Supporter

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 7,628
Re: Orientation of solar panels to provide sail area?

Pictures or sketches would help a lot. Even a deck plan.

I'm assuming you've done the math on the batteries required for overnight and panel weight.

Yes, there are people who cant panels, but if the boat swings much at anchor (trimarans with a bridle are generally very quiet) with the wind, the direction will be wrong. If you go through the math, it does not have to be wrong by much before all that was gained is lost and more.

I you want to try solar for AC, I would take a very serious look at increasing insulation, specifically on the roof. Look for small drafts and leaks, just as though you were heating in arctic conditions. There is a triple benefit for every BTU you can save. Also awnings over the windows and the cabin.

I would also look at multiple AC units; you may have enough power to run only one at times, for example, the sleeping cabins.

Personally, I would look at 115V or 230V AC. The units are generally better engineered and much cheaper, more than offsetting the power conversion. They will also work better in marinas.
Gear Testing--Engineering--Sailing
thinwater is offline   Reply With Quote

panels, sail, solar, solar panels

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
orientation tour in Toronto-area Marinas.. kazo Liveaboard's Forum 4 28-02-2018 06:26
Solar Panel Combinations and Orientation Options GILow Electrical: Batteries, Generators & Solar 41 25-08-2014 20:35
Isolation Transformer to also Provide Dual Voltage Shore Power ? SvenG Electrical: Batteries, Generators & Solar 21 04-03-2011 08:47
A charge to provide an insurance repair estimate? bstreep Dollars & Cents 9 02-05-2008 19:35

Advertise Here

All times are GMT -7. The time now is 01:50.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.