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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'>In terms of technique, the easiest way to
accomplish this is to plumb a valve in parallel with the systems’ check
valve, and have the customer open it when nighttime diversion is necessary
(middle of summer, customer on vacation, no draw on system, etc). Unless the
piping size or path limits it, heat will dissipate through the collectors passively
via reverse thermosyphon, especially if using 1” or larger pipe.<o:p></o:p></span></font></p>
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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'>802.863.1202</span></font><font
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
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>Nicholas Ponzio<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, December 16, 2009
10:54 PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">RE-wrenches</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> [<st1:PersonName w:st="on">RE-wrenches</st1:PersonName>]
solar hot water nighttime recirc</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Apologies if this has already been discussed here.<br>
<br>
One heat diversion method I hear suggested often is recirculating through the
collectors (flatplate) at night. Are there any data, calculations or anecdotal evidence
on the effectiveness of this approach? That is, can I really radiate as much
energy back to a dark sky as I collect during the day?<br>
<br>
Thanks for any feedback.</span></font><o:p></o:p></p>
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