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boB,<div>If this concept were to become a working option for the Classic, would the modules have to be modified in any way? Why are the diodes not blocking the reverse current?</div><div>benn<br><br><span class="ecxecxecxecxEC_Apple-style-span" style="color:rgb(0, 32, 96)"><font class="ecxApple-style-span" face="'Franklin Gothic Medium'">DayStar Renewable Energy Inc. </font></span><div><div><font class="ecxApple-style-span" face="'Franklin Gothic Medium'">benn@daystarsolar.ca</font></div><div><font class="ecxApple-style-span" face="'Franklin Gothic Medium'">780-906-7807 </font></div><div><font class="ecxApple-style-span" face="'Franklin Gothic Medium'">HAVE A SUNNY DAY
</font></div><div><br></div></div><br><br><div><div id="SkyDrivePlaceholder"></div><hr id="stopSpelling">Date: Mon, 16 Jan 2012 13:14:36 -0800<br>From: boB@midnitesolar.com<br>To: re-wrenches@lists.re-wrenches.org<br>Subject: Re: [RE-wrenches] Shedding ice<br><br>
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On 1/16/2012 11:39 AM, David Katz wrote:
<blockquote cite="mid:8767436DED006946A7206390E83D86220D9AD7AD37@VS-SJEXCH01.recsolar.local">
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<font style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Mark,<br>
I believe the Midnite Classic has this feature built in.
Check with them.<br>
David Katz</font><br>
<br>
</blockquote>
<br>
<br>
It just snowed up here in Arlington, 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 class="ecxmoz-txt-link-freetext" href="http://fusion.midnitesolar.com/PVsnowMelt3.gif" target="_blank">http://fusion.midnitesolar.com/PVsnowMelt3.gif</a><br>
<br>
boB<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<blockquote cite="mid:8767436DED006946A7206390E83D86220D9AD7AD37@VS-SJEXCH01.recsolar.local">
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<font style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><b>From</b>:
Mark Dickson [<a class="ecxmoz-txt-link-freetext" href="mailto:Mark@OasisMontana.com">mailto:Mark@OasisMontana.com</a>]
<br>
<b>Sent</b>: Monday, January 16, 2012 10:00 AM<br>
<b>To</b>: 'RE-wrenches'
<a class="ecxmoz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a>
<br>
<b>Subject</b>: [RE-wrenches] Shedding ice
<br>
</font> <br>
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<div class="ecxSection1">
<p class="ecxMsoNormal"><font color="navy" face="Arial" size="2"><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. . .</span></font></p>
<p class="ecxMsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font></p>
<div>
<p class="ecxMsoNormal"><font color="navy" face="Comic
Sans MS" size="2"><span style="font-size:10.0pt;font-family:"Comic\00000d\00000a Sans MS";color:navy">Best regards,</span></font></p>
<p class="ecxMsoNormal"><font color="navy" face="Comic
Sans MS" size="2"><span style="font-size:10.0pt;font-family:"Comic\00000d\00000a Sans MS";color:navy"> </span></font></p>
<p class="ecxMsoNormal"><font color="navy" face="Comic
Sans MS" size="2"><span style="font-size:10.0pt;font-family:"Comic\00000d\00000a Sans MS";color:navy">Mark Dickson,</span></font><font color="navy"><span style="color:navy"></span></font></p>
<p class="ecxMsoNormal"><font color="navy" face="ArialMT" size="2"><span style="font-size:10.0pt;font-family:ArialMT;color:navy">NABCEP
Certified Solar PV Installer
™</span></font></p>
<p class="ecxMsoNormal"><font color="navy" face="Comic
Sans MS" size="2"><span style="font-size:10.0pt;font-family:"Comic\00000d\00000a Sans MS";color:navy">Oasis Montana
Inc.</span></font></p>
</div>
<p class="ecxMsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font><br>
</p>
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</blockquote>
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