Cleaning PV Arrays [RE-wrenches]

[Joel Davidson]

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Dean, Do you know what brand and model solar module shattered?

----- Original Message ----- 
From: "Dean T. Newberry" <deant at dcn.org>
To: <RE-wrenches at topica.com>
Sent: Sunday, September 19, 2004 8:14 PM
Subject: Re: Cleaning PV Arrays [RE-wrenches]




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Hi Mark,
After 1-1/2 years late one evening I washed my 1kW array with citrus
cleaner solution scrubbed with a mop, rinsed with a hose and squeeged it
off,  the two day difference was 4%.
I don't think it is worth the trouble.

The Davis city crews used a firehose midday when the ambient was 95F.
One of the modules shattered. Definitely not worth the trouble.

I recommend that my customers let the rain clean the modules.

cul  deant

Mark Byington wrote:

>
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>Do clean PV arrays operate cooler and produce more power?
>
>We did an experiment in a suburban area and found that on two consecutive
days with essentially the same weather (clear, no wind, 85F), a 4KW roof
mounted array produced 7% more power after washing it down with a garden
hose from a ladder.  The modules had not been washed for 4 months.  We
recommend washing every 3-6 months unless it has rained.
>
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-- 
*Quantum Energy Group*
/Your renewable energy systems integrator.../

*www.quantumcenergy.com* <http://http://mjdsolar.com/>
www.talbottsolar.com <javascript:NEWPAGE()>
Dean T. Newberry
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430 D Street
Davis,  CA   95616
T:  (530) 758-6064
F:  (530) 758-3684
deant at dcn.org <mailto:deant at dcn.org>

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