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<DIV>Hmmm, I guess there could be a factor that enters into it due to the
curvature of the earth but the difference between the tropics of Cancer and
Capricorn, the extent of relative solar movement, is 47 degrees and that’s not
about to change.</DIV>
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<DIV style="font-color: black"><B>From:</B> <A
title=dave@independentpowerllc.com
href="mailto:dave@independentpowerllc.com">Dave Palumbo</A> </DIV>
<DIV><B>Sent:</B> Tuesday, February 22, 2011 3:51 PM</DIV>
<DIV><B>To:</B> <A title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">'RE-wrenches'</A> </DIV>
<DIV><B>Subject:</B> Re: [RE-wrenches] Array tilt angle doesn't
matter?</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Tom,<o:p></o:p></SPAN></P>
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style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">This
is coming from old memory, so I give this with a grain of salt, but I believe
the <U>noontime sun angle</U> at my latitude (44.5) is about 78 degrees on June
21<SUP>st</SUP> and about 22 degrees on December 21st. That’s a difference of 56
degrees.<o:p></o:p></SPAN></P>
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style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">David
Palumbo<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Independent
Power LLC <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">462
Solar Way Drive<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Hyde
Park, VT 05655<B><o:p></o:p></B></SPAN></P>
<P class=MsoNormal><B><I><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">www.independentpowerllc.com
<o:p></o:p></SPAN></I></B></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">NABCEP
Certified PV Installer<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Vermont
Solar Partner<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">23
Years Experience, (802) 888-7194 <o:p></o:p></SPAN></P>
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style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p></o:p></SPAN> </P>
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of </B>Tom
Elliot<BR><B>Sent:</B> Tuesday, February 22, 2011 7:46 PM<BR><B>To:</B>
RE-wrenches<BR><B>Subject:</B> Re: [RE-wrenches] Array tilt angle doesn't
matter?<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p></o:p> </P>
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<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">“The further north you
go the wider the summer to winter sun angle.”<o:p></o:p></SPAN></P></DIV></DIV>
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<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 10pt">Bob-O.
Explain this one to me please. The difference between winter solstice and
summer solstice sun angle is 47 degrees, everywhere on the planet, even in
Hawaii. I suspect that in higher latitudes a lower sun angle means more
atmosphere to affect insolation but the planet, last time I checked, is tilted
the same everywhere.</SPAN><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"><o:p></o:p></SPAN></P></DIV></DIV>
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<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 10pt">Tom</SPAN><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"><o:p></o:p></SPAN></P></DIV></DIV>
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style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<P class=MsoNormal><SPAN
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