, February 18, 2013 4:19 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] CIS mods
Ok so its a reading night.
There are a bunch of very good papers about this effect on all the
different types of modules.
www1.eere.energy.gov/
dfs/pvmrw2011_p25_tf_dunn.pdf
Best summary of Soaking would be : controlled
It is confusing that they refer to this as a "light soaking" effect. When we
worked on this thin film article in SolarPro magazine a couple years ago, a
researcher at NREL referred to this specific phenomenon as a "dark soaking"
effect (see discussion under "Performance Transients"):
http://sol
Carl,
Everything you said is true, but it does not answer the original question fully.
It is more about the variation in electrical output than long term degradation.
If I had to summarize it a different way it would be this.
Flash testing a CIGS module to STC will give you certain voltages and IS
This could just be due to the better temperature coefficient, or maybe
they do slightly better than cSi at lower irradiance levels?
Solar Frontier CIS: -0.31%/degC
SolarWorld poly: -0.45%/degC
I don't know enough about CIS to comment on the light soaking.
On 2013/2/18 8:36, Marco Mangelsdorf w
Doug,
I could be wrong but I dont think that definition of soaking is correct.
Typically it takes 6 months of good sunlight minimum for a module to reach a
stable output, this is particularly true of A-Si . For example a US64 will
degrade 15% and then settle at the label rating after 6 mon
I couldn't get that link to work, Doug.
Thanks.
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Doug Wells
Sent: Monday, February 18, 2013 4:19 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] CIS mods
Ok so its a re
7;
Subject: Re: [RE-wrenches] CIS mods
Can someone please educate as to what "soaking" means in this context?
Thanks.
From:
re-wrenches-boun...@lists.re-wrenches.org<mailto:re-wrenches-boun...@lists.re-wrenches.org>
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of
Ok so its a reading night.
There are a bunch of very good papers about this effect on all the different
types of modules.
www1.eere.energy.gov/…dfs/pvmrw2011_p25_tf_dunn.pdf
Best summary of Soaking would be : controlled exposure to light under
controlled environmental conditions.
The "soaking"
Can someone please educate as to what "soaking" means in this context?
Thanks.
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Carl Emerson
Sent: Monday, February 18, 2013 3:01 PM
To: 'RE-wrenches'
Subje
Kirpal,
I understand that they don't behave like A-Si modules.
They are claiming increased performance after soaking.
Regards
Carl Emerson
I don't understand the text as stated.I am not sure if they are simply
referring to a common effect in most thin film panels whe
I don't understand the text as stated.I am not sure if they are simply
referring to a common effect in most thin film panels where for the first
few months they can output more than ratings, and then they settle down to
what they are rated for, or if they are saying that after a few months the
Yes, I saw that. Sounds like smoke and mirrors to me.
marco
On Mon, Feb 18, 2013 at 1:38 PM, Carl Emerson wrote:
> *Marco.*
>
> * *
>
> *Did you notice the claim in the text as follows…*
>
> * *
>
> *The "Light Soaking" Effect*
> Following an initial period of exposure to sunlight, the CIS li
Marco.
Did you notice the claim in the text as follows.
The "Light Soaking" Effect
Following an initial period of exposure to sunlight, the CIS light soaking
effect will result in higher output than factory spec. This has been proven
by field data from around the world
If correct this a
Aloha,
Solar Frontier in Japan, the maker of copper-indium-selenium (CIS) mods,
claims that their product produces more kWhs per kW installed than
crystalline silicon.
http://www.solar-frontier.com/eng/cis/index.html If you go to the Softbank
Field Results on the right tabs area you can do
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