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<font face="Arial">Probably ( at least) half a scam,<br>
they may claim no pump but instead they use a compressor,<br>
so thats also a electricity consuming device,<br>
and also a moving part.<br>
AND, ... possible 5 added non-beneficial aspects:<br>
1) in normal solar hotwater, your water circulating looses its
initial oxygen ( cooked out),<br>
its get anaerobic ( read non-corroding) and here they keep
blowing air in the system<br>
= oxidation of the glycol+ metal/iron parts.( if they use a
classic air-lift or geyserpump )<br>
2) then also possible more energy used ( lost) to run the
compressor then a pump<br>
3) more heat build up in the collectors due to slow pumping ( and
very without airlifting)<br>
4) bigger pipes needed ( more cost & more heatlosses )<br>
5) air-liquid mix makes for less efficient heat exchange<br>
</font>6) way way waaaay to expensive, 9000 $ !? and you even
don't get a pump for that boatload of cash!?<br>
a guy on an other forum would have a payback-time of 38 years, if
that system<br>
would produce all the heat all year for his sanitary hotwater...<br>
<br>
There so called famous " Geyserpump " is just an old fashioned
airlift pump with a little add on,<br>
see : <a class="moz-txt-link-freetext" href="http://www.airliftpump.com/index.htm">http://www.airliftpump.com/index.htm</a><br>
<br>
JMO<br>
Bruno M.<br>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
Op 26-3-2012 15:02, <a class="moz-txt-link-abbreviated" href="mailto:npyner@ihug.com.au">npyner@ihug.com.au</a> schreef:
<blockquote
cite="mid:cabc36df2c1e37bb1685003057e47b97a96207bc@webmail.iinet.net.au"
type="cite"> OK, I can't play MOV on this laptop, so what did YOU
think?<br>
<br>
<br>
<blockquote><br>
----- Original Message -----Sent:Fri, 23 Mar 2012 06:38:03 -0400<br>
<div style="font-weight:bold;">Subject:</div>
Re: [Greenbuilding] new solar heating system in this country<br>
<br>
<br>
I just met one of the owners of this company the other day. One
thing I thought interesting about their system is that no
electric pump is required to circulate the glycol. Therefore, it
still provides hot water even if you loose power (except at
night). Any thoughts about their technology from the experts out
there? A "geyser" pump?<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.sunnovations.com/content/for-installers">http://www.sunnovations.com/content/for-installers</a> <br>
<br>
Thanks,</blockquote>
</blockquote>
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