Comments for How hot does the back of the PV Panel get?

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Jul 27, 2017
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Apr 28, 2015
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Mar 26, 2012
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Hot PV Panels!
by: Fred Eilers

Hi Paul,
It is indeed true that PV panels get hot and that they lose efficiency the hotter they get and spraying them with water would be quite a waste of water especially in arid lands. However, PV panels should have a space between the back of the panels and the roof structure if mounted on a roof. This will allow airflow to cool the panels. And the PV system should be built with enough capacity to offset the expected losses.


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