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active cooling of PV-panels

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Posted by jan siepelstad on December 1, 2008, 1:41 pm
Anyone outthere with some reallife experience in active cooling of PV panels
to enhance energyproduction?

Zwerius Kriegsman

Posted by BobG on December 1, 2008, 5:51 pm

I recall some messages here a couple years ago about a guy with a
wattmeter on his charge controller, and it read higher when he
squirted the panels with a garden hose during the day.

Posted by PhattyMo on December 3, 2008, 12:41 am
 BobG wrote:

I have done the same thing.Small ~10W(guessing?) Solec panel. I don't
have a watt-meter,but I monitored current and voltage (V*I=W) before and
after hosing the panel down. The power output would usually double,from
4-5W up to 8-10,even 12-14W once or twice! This only lasted a short
time(5 minutes?),until the panel warmed back up.
I have also noticed that the power output is a bit higher on cool sunny
days,or cool sunny mornings. :-)

Posted by BobG on December 3, 2008, 1:35 am
 How about a soaker hose on a 24vac irrigation solenoid? Measure watts,
squirt for 5 seconds, measure watts etc.

Posted by Jim Wilkins on December 3, 2008, 12:40 pm

Aha! make electricity and heat water with the same panel. Double the
output, double the maintenance.

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