This might not be tech but OT, anyhow, i was mulling over my 
brilliant idea for an electronic gel controlled butter dish 
(seriously), when i thought about solar panels.

As their efficiency drops as they get hot - a bit of a paradox really 
seeing as what cause them to get hot. Anyhoooo it got me wondering if 
anyone had tried commercially cooling solar panels to maintain output. 
Perhaps by pumping evaporative coolant, or have a waterfall run over 
them - hmm that probably wouldn't do much for solaristion uptake.

Colin
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cdb,   22/01/2009
 
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colin@btech-online.co.uk

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