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22-10-2019, 08:38
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#1
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Registered User
Join Date: Sep 2011
Location: On a boat
Boat: 1987 Cabo Rico 38 #117 (sold) & 2008 Manta 42 #124
Posts: 4,172
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Increasing Solar Output
You guys have probably seen this company in the news recently for developing an invisibility shield for the military but he is also patenting his technology to increase solar panel output. Of course it’s only going to increase the output up to the rating of the panel but the idea of your panels outputting close to their optimal output per day is pretty appealing...
https://vimeo.com/359910368
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22-10-2019, 09:47
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#2
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Registered User
Join Date: Mar 2011
Location: Panschwitz, Germany
Boat: Woods Mira 35 Catamaran
Posts: 4,205
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Re: Increasing Solar Output
That's pretty amazing stuff. Will cost a few bucks though I guess....
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22-10-2019, 15:39
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#3
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Senior Cruiser
Join Date: Nov 2013
Location: Port Moresby,Papua New Guinea
Boat: FP Belize Maestro 43 and OPBs
Posts: 12,888
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Re: Increasing Solar Output
I may be wrong, but as I understand it, it's all about placing a "light gathering mirror" beside an angled solar panel so that it gets more light when the sun is not perpendicular to the panel. In effect increasing the light gathering area.
Useful if you have lots of real estate to spread the mirrors on as an alternative to installing more panels, but I see little relevance to a boat installation
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22-10-2019, 16:55
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#4
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Senior Cruiser
Join Date: Sep 2014
Location: puget sound washington
Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
Posts: 12,113
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Re: Increasing Solar Output
I want enough to cover my 2 100 watt panels .
I will be a real world beta tester for the company
__________________
Non illigitamus carborundum
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22-10-2019, 17:50
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#5
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Registered User
Join Date: Jan 2008
Location: SF Bay Area (Boat Sold)
Boat: Former owner of a Valiant V40
Posts: 1,141
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Re: Increasing Solar Output
Yeah, it clearly just adds mirrors.
If you have the real estate to add mirrors, you would be better off adding more panels.
Arguably, if there is unusable (by solar) space between panels, mirrors could add a little.
Along this line of reasoning, there have also been proposals to orbit very large mirrors to focus sunlight on earth-bound solar farms. They too, went nowhere.
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22-10-2019, 18:05
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#6
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Moderator
Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 21,135
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Re: Increasing Solar Output
Quote:
If you have the real estate to add mirrors, you would be better off adding more panels.
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On a yacht, perhaps selective use of mirrors could alleviate shading issues as well as boosting peak output and overall average illumination.
Jim
__________________
Jim and Ann s/v Insatiable II, lying Port Cygnet Tasmania once again.
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22-10-2019, 18:07
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#7
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Moderator Emeritus
Join Date: Oct 2013
Location: Jacksonville/ out cruising
Boat: Island Packet 38
Posts: 31,351
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Re: Increasing Solar Output
I could see maybe a light gathering lens in a parabolic shape covering the top side of a panel, no larger than the panel.
If and this is a BIG if, it gathers more light, but surely that has been tested?
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22-10-2019, 19:16
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#8
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Registered User
Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 7,141
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Re: Increasing Solar Output
Quote:
Originally Posted by jamhass
Yeah, it clearly just adds mirrors.
If you have the real estate to add mirrors, you would be better off adding more panels.
Arguably, if there is unusable (by solar) space between panels, mirrors could add a little.
Along this line of reasoning, there have also been proposals to orbit very large mirrors to focus sunlight on earth-bound solar farms. They too, went nowhere.
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And for good reason. They would fry every living thing that passed through the area.
I would not want to be a bird where mirrors focus on a tower.
https://www.seia.org/initiatives/con...ng-solar-power
__________________
The question is not, "Who will let me?"
The question is,"Who is going to stop me?"
Ayn Rand
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22-10-2019, 20:15
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#9
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Registered User
Join Date: Feb 2016
Location: forest city
Boat: no boat any more
Posts: 2,510
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Re: Increasing Solar Output
Quote:
Originally Posted by a64pilot
I could see maybe a light gathering lens in a parabolic shape covering the top side of a panel, no larger than the panel.
If and this is a BIG if, it gathers more light, but surely that has been tested?
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How can a lens gather light that is not hitting it? There is so much light per surface at a given time, period.
__________________
...not all who wander are lost!
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22-10-2019, 22:18
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#10
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Senior Cruiser
Join Date: Nov 2013
Location: Port Moresby,Papua New Guinea
Boat: FP Belize Maestro 43 and OPBs
Posts: 12,888
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Re: Increasing Solar Output
Quote:
Originally Posted by double u
How can a lens gather light that is not hitting it? There is so much light per surface at a given time, period.
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If the lens is above the panel and the light source is not perpendicular to the panel, it will theoretically collect more light.
(Please excuse the rough diagram)
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22-10-2019, 22:51
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#11
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Registered User
Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,416
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Re: Increasing Solar Output
Panels are now cheap enough to where the significant limitation is having enough real estate on a boat to deploy them.
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23-10-2019, 02:48
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#12
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Registered User
Join Date: Mar 2011
Location: Panschwitz, Germany
Boat: Woods Mira 35 Catamaran
Posts: 4,205
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Re: Increasing Solar Output
I may be misunderstanding this, but towards the end of the video I got the impression that this stuff is placed on top of the panels, not besides it and still works by gathering more light even if the panels orientation is not at its best.
If that's the case than it would help even on cloudy days.
So it would not take up extra space.
Or do I misunderstand it?
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23-10-2019, 09:20
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#13
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Registered User
Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 7,141
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Re: Increasing Solar Output
A lenticular lens also can help at a low angle because the curved surface gives higher angles over part of its surface. This reduces reflected light loss.
See Stu's drawing above in post #10.
__________________
The question is not, "Who will let me?"
The question is,"Who is going to stop me?"
Ayn Rand
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23-10-2019, 11:17
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#14
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Registered User
Join Date: Feb 2016
Location: forest city
Boat: no boat any more
Posts: 2,510
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Re: Increasing Solar Output
Quote:
Originally Posted by StuM
If the lens is above the panel and the light source is not perpendicular to the panel, it will theoretically collect more light.
(Please excuse the rough diagram)
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A yes, of course you are right. Hadn't thought of this lensshape & position. Will the lens be lighter and or cheaper?
__________________
...not all who wander are lost!
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23-10-2019, 12:43
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#15
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Moderator Emeritus
Join Date: Oct 2013
Location: Jacksonville/ out cruising
Boat: Island Packet 38
Posts: 31,351
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Re: Increasing Solar Output
Quote:
Originally Posted by double u
A yes, of course you are right. Hadn't thought of this lensshape & position. Will the lens be lighter and or cheaper?
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It’s too simple a solution to actually work. My guess is that the lens absorbs or refracts enough light to keep it from working or surely there would have been panels so equipped decades ago.
Or maybe the money is better spent on larger panels? I’d assume many installations aren’t so constrained on available space as a boat is.
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