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Patrick,<br>
The "collector area" parameter is for the entire array, not for a
single panel. I believe that we clarified the "more" button
information with the release of TRNSYS 17 to say: The total area of
the solar collector array consistent with the supplied efficiency
parameters (typically gross area and not net area).<br>
Kind regards,<br>
David<br>
<br>
<br>
On 7/2/2011 10:13, Carstens, Patrick wrote:
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<p class="MsoNormal"><span lang="EN-US">Hi Trnsys-Users,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I would be pleased to
get some detailed information and help for the type 1b. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I wanna simulate a
solar-supplied heating system. In addition to it I use the
type 1b for a solar array. The hole solar array has to be 30
m² tall, compound by 12 panels.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Out of these 12 pieces
are 6 of it in a row. The rows are parallel in the hydraulic
system.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I fixed the system in
Trnsys as followed with one type 1b:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Number in series: 6<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Collector area: 4.84 m²<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The type doesn’t provide
the expected values.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">So I tested some small
projects. I found out, that the number in series doesn’t
have any impact to the useful gains. It doesn’t matter, if I
put the value to 1 or to 100.There is no different.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">What’s wrong?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">On the other side I used
12 panels and connected them to an array. It worked well and
the output seems to be ok.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Next I only used 1 panel
with 30 m². The useful gains compared with gains out of 12
panels are 10-times more.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Which solution is the
right one?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I use Trnsys 16 and I
can’t update it, because I got it just to do my exam.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Many thanks in advanced
for your help.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Patrick<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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