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<DIV><FONT size=2 face=Arial>William,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Very impressive! What is the height of the back of
the south array? What is the distance between the back of the south array and
front of the array behind it?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Joel Davidson</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=william@millersolar.com href="mailto:william@millersolar.com">William
Miller</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 11, 2009 11:57 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [RE-wrenches] Shading
animations</DIV>
<DIV><BR></DIV><FONT size=3>Joel:<BR><BR>My understanding is that you wish to
calculate inter-row spacing for non-south facing arrays. I modeled an
example of this scenario in 3D over a time period and created a video
file. I converted the aforementioned 97 MB file to a WMV and trimmed the
file size just a little (to ~436 KB). The file can be found at: <A
href="http://millersolar.com/case_studies/case_studies.html"
eudora="autourl">http://millersolar.com/case_studies/case_studies.html</A>
Click on Shading Study.<BR><BR>I modeled two identical, two row
installations. One is facing due south, one is 45 degrees east of
south. The modeling date is winter solstice and the time period is from
8:00 AM to 4:00 PM. The location is right here in sunny San Luis Obispo
County.<BR><BR>If you get a chance to view the animation, you will note that
the inter-row shading is not significantly different between the south facing
rows and the non-south facing rows. One might even decide that the
solution for a south facing installation is an adequate solution for any
installation where all other parameters are equal. I will verify this
mathematically (in my free time).<BR><BR>Thanks for the question. I love
thinking about these problems. (Tell the kids that the math is actually
useful.)<BR><BR>William Miller<BR><BR>PS: The animation was created in
Microstation, saved as an AVI and converted to a WMV file in Pinnacle
Studio. I apologize that the resolution is not great -- I am still
learning the software, even after all these
years.<BR><BR>Wm<BR><BR><BR><BR><BR><BR>At 06:28 PM 5/11/2009, you
wrote:<BR></FONT>
<BLOCKQUOTE class=cite cite="" type="cite"><FONT size=2
face=arial>Ken,<BR></FONT><FONT size=3> <BR></FONT><FONT size=2
face=arial>Thank you. This website and software gives the sun altitude and
azimuth. I seem to recall 3D graphic dynamic software where you input the
site longitude and latitude, solar panel tilt angle and the north side
height and the result would be a shade pattern shown for each hour. Does
anyone have such a program?<BR></FONT><FONT size=3> <BR></FONT><FONT
size=2 face=arial>Best regards,<BR>Joel Davidson<BR></FONT>
<BLOCKQUOTE class=cite cite="" type="cite"><FONT size=3>----- Original
Message ----- <BR><B>From:</B> <A
href="mailto:khulet@revolutionearth.com">Engineering Services Co.</A>
<BR><B>To:</B> <A
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A>
<BR><B>Sent:</B> Monday, May 11, 2009 11:14 AM<BR><B>Subject:</B> Re:
[RE-wrenches] Spacing between solar arrays<BR><BR>Try this Joel.
<BR><BR><A
href="http://www.susdesign.com/">http://www.susdesign.com/</A><BR><BR><BR>Ken
Hulet<BR>Engineering Services Co.<BR>204 S. Main St.<BR>Blanchardville, WI
53516<BR>608.523.3726<BR><BR><A
href="http://www.revolutionearth.com">http://www.revolutionearth.com</A><BR>visit
us at River Valley Trading Co.<BR><A
href="http://www.rivervalleytrading.com">http://www.rivervalleytrading.com</A><BR><BR><BR><BR><BR><BR>On
May 11, 2009, at 11:39 AM, Joel Davidson wrote:<BR><BR>
<BLOCKQUOTE class=cite cite=""
type="cite">Wrenches,<BR> <BR>Someone posted a website or
calculation for determining the spacing between solar arrays, but I can
not find it. It is easy to get the spacing from a drawing when the array
faces true south, but when the array faces southeast or southwest is
what we need to know. Please help. Thank you very
much.<BR> <BR>Joel Davidson</FONT></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE>
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