Has anyone here tried using Fresnel Lenses (or any type of lens) to focus light onto solar panels so as to maximise power output, particularly mono-crystalline multi-layered solar panels?
I am interested in finding out whether efficiencies of greater than 33.7% are possible with multi-layered panels; interested in learning more about multi-layered panels, and whether and to what extent solar panels generally suffer thermal damage due to Fresnel Lens amplification.
Hi Quantumtangles,
I've tried mirrors before on a small panel and it seems to increase the output but heats up quickly. Keeping the panels cool and not burning holes in it is the big issue.
33.7%?, maybe combine the mirrors/fresnel lens with the panel underwater to keep it cool?
Here are some videos done by Dan Rojas aka GreenPowerScience.
SOLAR PANEL WITH A FRESNEL LENS CPV CONCENTRATED PHOTOVOLTAIC PV SOLAR
http://www.youtube.com/watch?v=-yh1q59a1h0
Solar Panel Mirror Booster 30% increase in power output with mirrors
http://www.youtube.com/watch?v=o_cEYld4LiU
Underwater SOLAR PANELS 9% Stronger PV Photovoltaic Sun Power
http://www.youtube.com/watch?v=rGi0Mf3cl1E
Hi DreamThinkBuild
Great videos, lots of good ideas, Next week I get my new solar panels and I am planning Some experiments before they go on the roof, It's been so long Since I have done any ::)
I love solar panels the only genuine free energy device I have ever found, If only I can make them run 24 7 ;) Anyway let you all know how it goes next week as long as I get the time.
Hi Quantumtangles
I hope you are using an MPPT Controller as they can give 30 per cent more then conventional ones, I am presuming that you are storing your energy in batteries.
Many thanks powercat and dreamthinkbuild.
Plenty for me to think about here.
Quote from: DreamThinkBuild on March 29, 2012, 01:02:00 PM
Hi Quantumtangles,
I've tried mirrors before on a small panel and it seems to increase the output but heats up quickly. Keeping the panels cool and not burning holes in it is the big issue.
33.7%?, maybe combine the mirrors/fresnel lens with the panel underwater to keep it cool?
Here are some videos done by Dan Rojas aka GreenPowerScience.
SOLAR PANEL WITH A FRESNEL LENS CPV CONCENTRATED PHOTOVOLTAIC PV SOLAR
http://www.youtube.com/watch?v=-yh1q59a1h0 (http://www.youtube.com/watch?v=-yh1q59a1h0)
Solar Panel Mirror Booster 30% increase in power output with mirrors
http://www.youtube.com/watch?v=o_cEYld4LiU (http://www.youtube.com/watch?v=o_cEYld4LiU)
Underwater SOLAR PANELS 9% Stronger PV Photovoltaic Sun Power
http://www.youtube.com/watch?v=rGi0Mf3cl1E (http://www.youtube.com/watch?v=rGi0Mf3cl1E)
here is an idea I was thinking of for a while now....
Yeah the panels get really hot just in straight sun let alone using lenses. So the idea is to build a water solar collector under the panels. If anodized aluminum is used as the heat collector, the panels can be mounted to that with heat sink compound so the panels heat is transferred to the hot water collector. Keeping the panels cool(even 130deg is better than no cooling at all) will provide more output and ya get hot water to boot.
Seems like a convenient way to get 2 things accomplished in the space of 1. ;]
Mags
Quote from: Magluvin on March 31, 2012, 08:40:24 PM
here is an idea I was thinking of for a while now....
Yeah the panels get really hot just in straight sun let alone using lenses. So the idea is to build a water solar collector under the panels. If anodized aluminum is used as the heat collector, the panels can be mounted to that with heat sink compound so the panels heat is transferred to the hot water collector. Keeping the panels cool(even 130deg is better than no cooling at all) will provide more output and ya get hot water to boot.
Seems like a convenient way to get 2 things accomplished in the space of 1. ;]
Mags
This makes perfect sense Mags. There are excellent videos on Youtube about water cooled (Fresnel lens) solar panels but there are also other videos concerning soda can solar water heaters. They are soda cans with holes drilled in both ends, lined up one of top of the other and then painted black to absorb as much heat as possible from the sun. Small electric pumps are used for water re-circulation.
I had a rudimentary thought process about combining them but did not think about it in detail. But now you mention it, I think you are right because Solar panels are more efficient when cool (a paradox). Keeping them cool in practice requires flowing water.
But flowing water is also an inevitable by-product of 'soda can' type water heaters. The 'hot' water from soda-can heaters is hot enough for household use, and yet it is still much cooler than the surface of a Fresnel lens activated solar panel. The upshot of this is that hot or warm flowing water from a solar water heater (counter-intuitively) is actually a
coolant relative to the hot surface of a Fresnel amplified solar panel.
So the water is hot in terms of the hot water requirements of a household, but it is cool relative to the extremely hot surface of a fresnel lens solar panel. And I agree. Combining the two ideas turns two problems into an overall solution. Nice post.
Quote from: quantumtangles on March 29, 2012, 12:21:13 PM
Has anyone here tried using Fresnel Lenses (or any type of lens) to focus light onto solar panels so as to maximise power output, particularly mono-crystalline multi-layered solar panels?
I am interested in finding out whether efficiencies of greater than 33.7% are possible with multi-layered panels; interested in learning more about multi-layered panels, and whether and to what extent solar panels generally suffer thermal damage due to Fresnel Lens amplification.
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Electrical solution
Actually I want to use Fresnel lens over a 300*200 (mm) size 10 W solar panel for increasing out put power.
So May be I need to use Fresnel lens whose size larger than panel size.
Please advise me what model of Fresnel lens will the appropriate one in that application.
I want to use this concept in my thesis project. Is it possible?
Please help me.
http://greenpowerscience.com/SHOPHOME.html
TS