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<BODY lang=EN-GB vLink=purple link=blue bgColor=#ffffff>
<DIV><FONT face=Arial size=3></FONT> </DIV>
<DIV><FONT face=Arial>Hi Carl,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Thanks for the explanation.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial"><FONT size=3>-----</FONT> Original Message -----
</DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=freepower@freepower.co.nz
href="mailto:freepower@freepower.co.nz">Carl Emerson</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> Thursday, April 30, 2009 4:54
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] Heat dump or
Stagnate?</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">Hi
Gang,</SPAN></FONT></P>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">We are installing our
first "steam back" system with a German roof integrated array 51 SqM (flat
plate) from the Wagner Company.</SPAN></FONT> <FONT face=Arial
color=blue><SPAN style="COLOR: blue; FONT-FAMILY: Arial"><A
href="http://www.wagner-solar.com">http://www.wagner-solar.com</A></SPAN></FONT></P>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">The system is
pressured to approx 2 to 2.2 bar.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">At approx 120 to 125
degrees the glycol/water fluid starts to go from liquid to gas and the
pressure increases.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">An expansion vessel
starts to compensate for the pressure.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">The temperature
increases up around 155 to 160C until all the fluid is in gas
form.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">The right volume of
expansion vessel, and a larger ‘pre vessel’ and right pressures are critical
to guarantee that the medium is not going to crack (become</SPAN></FONT><FONT
face=Arial color=blue><SPAN lang=EN-US
style="COLOR: blue; FONT-FAMILY: Arial"> </SPAN></FONT><FONT face=Arial
color=blue><SPAN lang=EN-US style="COLOR: blue; FONT-FAMILY: Arial">acidic)
and safely transition back to its original state on cooling.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">The Wagner company
stands behind this approach and we no longer need a backup UPS as for a
standard closed loop system to keep things running safely during a power
failure. Nor do we need to worry about the pH of the medium.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=blue size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">Hope this
helps,</SPAN></FONT></P>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">Carl
Emerson</SPAN></FONT></P>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">Free Power
Ltd.</SPAN></FONT></P>
<P class=MsoPlainText><FONT face=Arial color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: Arial">Auckland
NZ</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt">-----Original Message-----<BR>From:
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] On Behalf Of August
Goers<BR>Sent: 25 April 2009 6:47 a.m.<BR>To: 'RE-wrenches'<BR>Subject: Re:
[RE-wrenches] Heat dump or Stagnate?</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Hi Troy -</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">We've installed a good deal of Schuco systems with
Slim V collectors which</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">are supposed to utilize steam back. Being a mechanical
engineer, I still</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">have my doubts about the steam back principle but I
don't have any real</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">world data proving it does or doesn't work. I can't
say anything bad about</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">it, however.</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Our installed systems are all relatively new so it is
hard to say how</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">they'll hold up in the long term. Our first Schuco
systems were installed in</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">2006. We routinely check the glycol ph and haven't
found it going acidic yet</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">although I've noticed the color (Schuco's glycol is
pink) is turning a bit</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">brown. We've also revamped a large system where we
disassembled the copper</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">piping and found quite a bit of dark pink sediment in
the rooftop pipes.</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">The bottom line is that the more times the system
overheats the faster the</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">glycol inhibitor is going to degrade in any system.
Since all these systems</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">are so new it is hard to say how long this will take.
The danger I see is</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">that it is easy to forget older systems and before you
know it they start</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">failing. </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">On another note, Heliodyne is also packaging closed
loop glycol systems and</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">they aren't touting the steam back principle. Their
system operates at</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">higher pressures and use Dowfrost HD. Dow's website
indicates that HD is</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">good up to 325 deg F which is cooking - I doubt flat
plate collector</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">stagnation temps will reach that high at least in our
area. See spec sheet</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">here:</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">http://www.dow.com/PublishedLiterature/dh_0040/0901b80380040bd2.pdf?filepath</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">=heattrans/pdfs/noreg/180-01315.pdf&fromPage=GetDoc</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">I guess I better get back to work... Anyone else have
experience with</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">degrading systems?</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Best, </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">August</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">August Goers</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Luminalt Energy Corporation</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">O: 415.564.7652</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">M: 415.559.1525</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">F: 650.244.9167</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">www.luminalt.com</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">august@luminalt.com</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">-----Original Message-----</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">From:
re-wrenches-bounces@lists.re-wrenches.org</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">[mailto:re-wrenches-bounces@lists.re-wrenches.org] On
Behalf Of Troy Harvey</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Sent: Thursday, April 23, 2009 11:10
AM</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">To: RE-wrenches</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Subject: Re: [RE-wrenches] Heat dump or
Stagnate?</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Apparently this is the "modern" design method used in
many european </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">systems. It scares me too. But from several sources,
this seems to be </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">considered one of the most reliable design methods for
closed loop </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">systems (ie. it works even without electronic controls
working, power </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">outages, etc).</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Standard glycol. The main point seems to be the design
of the pipes </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">and collectors need to facilitate collector draining
from the steam </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">pushing the fluid back into the expansion tank, so the
collectors </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">empty themselves. Its closed loop, but
effectively becomes a </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">"pressurized drainback" in over heating
conditions.</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Here is a couple of links:</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">
http://www.aee-intec.at/0uploads/dateien48.pdf</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">
http://www.suterconsulting.com/CISBAT.pdf</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">I'm hoping to find someone with experience with this
kind of system to </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">overcome my fears</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Troy Harvey</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">---------------------</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">Heliocentric</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">801-453-9434</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">taharvey@heliocentric.org</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">On Apr 23, 2009, at 11:04 AM, Dana
wrote:</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> I have only seen boiled glycol turn to a cola
like syrup that had to </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> be</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> purged and removed.</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> What kind of system & glycol is
this?</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Where would you expand that
much?</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Can you provide a link to this
paper?</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> We use heat dumps.</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Dana Orzel</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Great Solar Works, Inc</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> www.solarwork.com</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> E - dana@solarwork.com</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> V - 970.626.5253</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> F - 970.626.4140</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> C - 970.209.4076</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> "I'd put my money on solar energy. I hope we
don't have to wait 'til </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> oil and</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> coal run out before we tackle
that."</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> -Thomas Edison, in conversation with Henry Ford
and Harvey </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Firestone, March</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> 1931</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> -----Original Message-----</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> From:
re-wrenches-bounces@lists.re-wrenches.org</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">>
[mailto:re-wrenches-bounces@lists.re-wrenches.org] On Behalf Of Troy
</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Harvey</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Sent: Thursday, April 23, 2009 10:43
AM</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> To: RE-wrenches</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Subject: [RE-wrenches] Solar Combi-systems: Heat
dump or Stagnate?</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> I'm wondering how many of you out there have
installed medium sized</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> solar hot water systems (6-8 panel) that were
designed to stagnate</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> during summertime over production as opposed to
diverting to a heat</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> dump or radiator? The International solar agency
has a couple of</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> papers that show a properly designed system
should be able to stagnate</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> in a way that the boiling glycol mix vapors in
the panels, purge the</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> panels of fluid, turning off the system without
degrading the glycol.</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> That doesn't seem to be a typical way to design
systems in the U.S. ,</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> we've usually gone to a heat dump. Does anyone
have experience with</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> this?</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Troy Harvey</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> ---------------------</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> Heliocentric</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> 801-453-9434</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> taharvey@heliocentric.org</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">> </SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=3><SPAN
style="FONT-SIZE: 12pt">>
_______________________________________________</SPAN></FONT></P>
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