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Posted by Lord Gow333, Conservative Full on May 22, 2008, 10:39 am
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>I have a 15 kWp PV system on my roof.
> The panels tend to get quite hot in full sun.
> Because of the reduced output from high temp. panels, I thougt it might be
> usefull to put garden sprinklers on my roof, to distribute water over the
> panels.
> I have free water available from a small stream in the back of our house.
> So it would cost met just the energy for a pump.
> Offcourse the energy gain should be more than the pump energy.
> Has anyone in this group ever experimented with something like this?
> And if yes, what were the results?
>
> regards,
> Jan (from Holland)
I'd look into a ram pump. In all honesty I can't tell you how they work
(anybody else?), but they use the flowing water of the stream for their
power so there's no operating cost. I don't think they put out much volume,
but for this you wouldn't need it anyway.
I do think that misting nozzles are the way to go over sprinklers. Try the
sprayer section at a farm supply store. I might be cheaper/better than a
home improvement store.
Good luck.
LG
--
"Keep it simple. If it takes a genius to understand it, it will never work."
- Clarence Leonard “Kelly” Johnson
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