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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Wow Bob I take it back--that was really
cool! <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I am trying to help out some of our local weather
forecasters that have a small 50 watt module mounted on top of one of our peaks
that runs a weather station. So, unfortunately this may be a little on
the small side of one of your classics, but none the less, if it works. . . <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Do you have any idea on how much power it
takes in order to accomplish this? Would doubling or tripling the system
capacity cut it? Also, how will the classic determine if there is in fact
snow or ice on the module?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS"><span
style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'>Best regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS"><span
style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS"><span
style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'>Mark Dickson,</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=ArialMT><span style='font-size:
10.0pt;font-family:ArialMT;color:navy'>NABCEP Certified Solar PV Installer
™<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS"><span
style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'>Oasis Montana
Inc.<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
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<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> re-wrenches-bounces@lists.re-wrenches.org [mailto:re-wrenches-bounces@lists.re-wrenches.org]
<b><span style='font-weight:bold'>On Behalf Of </span></b>boB@midnitesolar.com<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 16, 2012
2:15 PM<br>
<b><span style='font-weight:bold'>To:</span></b> RE-wrenches<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [RE-wrenches]
Shedding ice</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'>On 1/16/2012 11:39 AM, David Katz wrote: <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PostalCode"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="State"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"><!--[if gte mso 9]><xml>
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</xml><![endif]-->Mark,<br>
I believe the Midnite Classic has this feature built in. Check with them.<br>
David Katz</span></font><br>
<br>
<br>
<o:p></o:p></p>
</u1:smarttagtype></u1:smarttagtype></u1:smarttagtype></u1:smarttagtype>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><br>
<br>
It just snowed up here in <st1:City w:st="on"><st1:place w:st="on">Arlington</st1:place></st1:City>,
Washington A.C. and we were just starting to melt some snow<br>
on a couple of modules on our roof just now with one of our charge controllers
here in the lab.<br>
<br>
This feature is not yet in the Classic, BUT, check out this experiment that I
did about 3 years ago<br>
in my front yard with an animated gif time lapse.<br>
<br>
One module is being powered and the other is not powered, just sitting there
for comparison.<br>
These are KC125s.<br>
<br>
The time involved here was about 3 hours and took about 1 kW-hour of energy but
gives you<br>
an idea of what may be done with this idea. One thing not in our favor
here is that the module<br>
that is being powered is resting on the ground, in the snow, which would
significantly<br>
hinder snow melting I would think rather than being properly mounted.<br>
<br>
Oh what fun it is to melt some PV snow tonight !<br>
<br>
<a href="http://fusion.midnitesolar.com/PVsnowMelt3.gif">http://fusion.midnitesolar.com/PVsnowMelt3.gif</a><br>
<br>
boB<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<o:p></o:p></span></font></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PostalCode"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="State"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place">From</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>: Mark
Dickson [<a href="mailto:Mark@OasisMontana.com">mailto:Mark@OasisMontana.com</a>]
<br>
<b><span style='font-weight:bold'>Sent</span></b>: Monday, January 16, 2012
10:00 AM<br>
<b><span style='font-weight:bold'>To</span></b>: 'RE-wrenches' <a
href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a>
<br>
<b><span style='font-weight:bold'>Subject</span></b>: [RE-wrenches] Shedding
ice <br>
</span></font> <o:p></o:p></p>
</div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I recall a conversation a while back about
the possibility of “reversing” the current in a solar module to
increase the cell temp enough to shed ice/rime. To follow-up, has anybody
been successful at this? I am guessing, if so, it would entail, removal
of diodes, increasing PV and battery capacity and some way to sense the ice at
the very least. . . It sounds good in theory, but I am skeptical as to whether
it will work in reality. . .<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><u1:p> </u1:p></span></font><o:p></o:p></p>
<div>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS ;color:navy"><span
style='font-size:10.0pt;font-family:"Comic Sans MS \;color\:navy";color:navy'>Best
regards,<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS ;color:navy"><span
style='font-size:10.0pt;font-family:"Comic Sans MS \;color\:navy";color:navy'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS ;color:navy"><span
style='font-size:10.0pt;font-family:"Comic Sans MS \;color\:navy";color:navy'>Mark
Dickson,</span></font><o:p></o:p></p>
<u1:p></u1:p>
<p class=MsoNormal><font size=2 color=navy face=ArialMT><span style='font-size:
10.0pt;font-family:ArialMT;color:navy'>NABCEP Certified Solar PV Installer ™<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face="Comic Sans MS ;color:navy"><span
style='font-size:10.0pt;font-family:"Comic Sans MS \;color\:navy";color:navy'>Oasis
Montana Inc.<u1:p></u1:p></span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</u1:smarttagtype></u1:smarttagtype></u1:smarttagtype></u1:smarttagtype></div>
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