[RE-wrenches] Two strings of Different Orientation

[i2p]

On May 21, 2010, at 9:47:59 AM, i2p <i2p at aol.com> wrote:

 From:  i2p <i2p at aol.com>
Subject:    Re: [RE-wrenches] Two strings of Different Orientation
Date:   May 21, 2010 9:47:59 AM PDT
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>

On May 20, 2010, at 7:11:45 PM, "Bill Brooks" <billbrooks7 at yahoo.com> 
wrote:

Maybe
it is a pipe dream, but I would like to think that designers, 
engineers, and
knowledgeable installers will one day be able to accurately understand 
the
irradiance and temperature impacts on I-V curves so that manufacturers 
will
be unable to use inaccurate information to sell their wares. Call me 
crazy.

Amen Bill,

I just installed a system very similiar , SE array paired with SW 
array. Performance is good and I will be monitoring over the next year 
to gain kwh performance data. But generally , as long as the strings 
are equal, modest mismatch problems are minimal.

my two cents,

Don L oweburg
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To clarify, I am talking about modest array orientation mismatch for 
identical strings sharing a common single inverter input. Marv's point 
about cell temp vs ambient is a good one and does complicate the 
analysis a bit.

Don Loweburg
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