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I have written an Excel spreadsheet that will do this. All you need
to do is enter the data for the weather station that you are
referencing and the shading for each hour of the month (copy paste
works fast)<br>
<br>
email me at <a class="moz-txt-link-abbreviated" href="mailto:BIRenewables@entech-engineering.com">BIRenewables@entech-engineering.com</a> with Spreadsheet in
the subject line and I'll send it out.<br>
<br>
Chris<br>
<br>
<img src="cid:part1.08010907.04060505@entech-engineering.com" alt=""><br>
<br>
<img src="cid:part2.09020804.01070003@entech-engineering.com" alt=""><br>
<br>
<div class="moz-cite-prefix">On 10/29/2014 1:48 AM, William Miller
wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D">Dana:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D">You
can evaluate multiple points with a Pathfinder, thusly:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l1 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:"Arial","sans-serif";color:#1F497D"><span
style="mso-list:Ignore">1.<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
style="font-family:"Arial","sans-serif";color:#1F497D">In
case you were not aware, the little numbers in between the
hours add up to 100% over a day.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l1 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:"Arial","sans-serif";color:#1F497D"><span
style="mso-list:Ignore">2.<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
style="font-family:"Arial","sans-serif";color:#1F497D">Create
a spreadsheet with all of the numbers present. Make it
mimic the layout on the Pathfinder.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l1 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:"Arial","sans-serif";color:#1F497D"><span
style="mso-list:Ignore">3.<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
style="font-family:"Arial","sans-serif";color:#1F497D">For
any given sample, you delete all of the numbers that
correspond to shading. This is easily done by viewing the
image of the pathfinder and lassoing and deleting the shaded
numbers until the spreadsheet looks like the Pathfinder.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l1 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:"Arial","sans-serif";color:#1F497D"><span
style="mso-list:Ignore">4.<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
style="font-family:"Arial","sans-serif";color:#1F497D">The
remainder is the sun exposure percentage for the month.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l1 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:"Arial","sans-serif";color:#1F497D"><span
style="mso-list:Ignore">5.<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
style="font-family:"Arial","sans-serif";color:#1F497D">You
take shading analysis samples at all of the points you
desire.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l1 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:"Arial","sans-serif";color:#1F497D"><span
style="mso-list:Ignore">6.<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
style="font-family:"Arial","sans-serif";color:#1F497D">You
calculate each point separately and then average the results
for the different points on a month-by-month basis.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l1 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:"Arial","sans-serif";color:#1F497D"><span
style="mso-list:Ignore">7.<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
style="font-family:"Arial","sans-serif";color:#1F497D">See
example spreadsheet below for one point with no shading.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D">Like
any worthwhile project, this takes some time to set up, but
it is then pretty effortless to use. There is no cost for
this do=it-yourself approach.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D">William<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D">Example:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D">(Note
the rows in the Pathfinder are not in chronological order.
Your formulae will compensate for that.)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><img id="Picture_x0020_2"
src="cid:part3.08060901.03020404@entech-engineering.com"
height="416" width="1079"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><img
id="Picture_x0020_1"
src="cid:part4.02040309.01010806@entech-engineering.com"
alt="Gradient Cap_mini" height="28" width="64"><br>
Lic 773985<br>
<a moz-do-not-send="true" href="http://www.millersolar.com/"><span
style="color:blue">millersolar.com</span></a><br>
805-438-5600<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
RE-wrenches
[<a class="moz-txt-link-freetext" href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On
Behalf Of </b>Dana Brandt<br>
<b>Sent:</b> Tuesday, October 28, 2014 2:20 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] Pathfinder vs. Suneye<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hi
Wrenches,<o:p></o:p></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt">We've
been using the Pathfinder along with the Pathfinder
Assistant software for several years and mostly like it.
My concern with it is there's no way to combine two or
three shading images to account for a string of modules
spanning those different shading conditions. I've spoken
with the Pathfinder folks and they don't seem to
understand or acknowledge that limitation. How have you
dealt with this?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">So I
bought a Suneye. Their software can apparently calculate
string shading including multiple solar access readings.
<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">I took both the Pathfinder and the
Suneye out on my next site assessment and have run the
results of side by side measurements. The Suneye is
showing about 10-15% better solar access for each
measurement that the Pathfinder Assistant software. I'm
concerned to see such different numbers. Has anyone else
done a side by side comparison? What have you seen?<o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">Thanks,<br>
<br clear="all">
<o:p></o:p></p>
<div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal">Dana<br>
<br>
Dana Brandt<br>
<br>
<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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<pre class="moz-signature" cols="72">--
Christopher Warfel, President
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978</pre>
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