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Bill<br>
<br>
What kind of thermal camera are you using for this kind of
inspection? Satisfied? Comments?<br>
<br>
Thanks,<br>
<pre class="moz-signature" cols="72">Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094</pre>
On 10-Sep-14 11:04 PM, Bill Hoffer wrote:<br>
</div>
<blockquote
cite="mid:CAL4SeayJgPJBw5+zO_xF6bmqQ9XYKb=Ve4sb9ORjd+-CZdqhZA@mail.gmail.com"
type="cite">
<div dir="ltr">Mark
<div><br>
</div>
<div>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 .</div>
<div><br>
</div>
<div>Bill </div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Sep 10, 2014 at 9:43 PM, Mark
Frye <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:markf@berkeleysolar.com" target="_blank">markf@berkeleysolar.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Folks,<br>
<br>
Two identical PV modules are mount in an identical fashion
and exposed to identical irradiance.<br>
<br>
One module is open circuit. The other is connected to a load
and producing power.<br>
<br>
Is there a difference in the temperature of the two modules?
If so, which one is cooler?<br>
<br>
Mark Frye<br>
Berkeley Solar Electric Systems<br>
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-- <br>
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<div>William Hoffer <br>
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161 SE Fourth Ave<br>
<div>P.O. Box 1823<br>
White Salmon, WA 98672-1823<br>
<a moz-do-not-send="true"
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