Hey Folks,
I was authorized by Alan at Magnum to share this with the list.
Hello Bill,
Recently you wrote:How sad you'll have to be taking down the made in USA
flag waving (good-bye) on your website.
This is simply untrue. What is true is that Magnum is now a wholly owned
Folks,
Two identical PV modules are mount in an identical fashion and exposed
to identical irradiance.
One module is open circuit. The other is connected to a load and
producing power.
Is there a difference in the temperature of the two modules? If so,
which one is cooler?
Mark Frye
Mark
Loaded modules will have hotter cells. I know this from searching for bad
cells with a thermal camera. At open circuit I could not see a difference,
but short circuit or loaded I could see 20 - 30 C increase in mismatched
cells .
Bill
On Wed, Sep 10, 2014 at 9:43 PM, Mark Frye
Colleagues:
Thanks for the scintillating and relevant discussion. This brings up a
question on my radar: Will unloaded modules fail sooner than loaded
modules?
Thanks again. Great Group!
William
Gradient Cap_mini
Lic 773985
http://www.millersolar.com/ millersolar.com
Mark,
This question depends on what where you draw your system boundary. If you
are analyzing a module in its entirety, the module that is converting
irradiance energy into electrical current will be cooler overall (less
thermal energy) because less of that irradiance energy is turning into
I have had a 30 k with 12 aurora magnatec inverters and every time I get a
failure ( Magnatec with short the DC together) and you can feel the modules
are hotter then ones under normal operation, have not compared to VOC
Jerry
On Wed, Sep 10, 2014 at 5:43 PM, Mark Frye ma...@berkeleysolar.com
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