PV module temp [RE-wrenches]
Smitty
smitty at aaasolar.com
Tue Sep 25 07:45:43 PDT 2001
Trav, the insulation is probably giving you a high reading. The sensor should be
exposed to the same atmosphere that the back of the panel is. Smitty.
"Travis Creswell, Ozark Solar" wrote:
> Hey Gang,
>
> I have hooked up a Heliotrope Quadra Temp four channel temp monitor that
> uses 10k sensors. One of the channels is monitoring temp on the back of a
> module in my roof mounted PV array. I'm seeing temps of nearly 140 F on
> sunny days that the ambient temp doesn't get past 80 F. That seems pretty
> high. The sensor is fine as it reads ambient temp accurately after sunset
> plus I checked it before I installed it. I siliconed the sensor along with
> a small piece of Armaflex insulation on the back approximately in the center
> of the module.
>
> I insulated it so the temp would be more accurate but now I am wondering if
> I'm not holding heat in with the insulation causing the temp to be too high?
> But if I don't insulate it won't it read too cool?
>
> Suggestions?
>
> Thanks in advance.
>
> Travis Creswell
> Ozark Solar
>
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