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Florian,<br>
I have seen that behavior as well; what it comes down to is the
time base that you have selected in TRNBuild. If the wall transfer
function coefficients are computed based on 1-hour intervals then
you are going to see some discrete behavior if your timestep gets
too far away from your time base. It is best to have your time step
and your time base match but that isn't practical. Try generating
the wall coefficients with a 0.25 hour time base and see if that
helps.<br>
Best,<br>
David<br>
<br>
<br>
On 5/4/2011 02:36, Stift Florian wrote:
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<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);">Dear TRNSYS-users,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US">I am simulating a room with an
active layer in the separating wall.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US">I tried to change the simulation
timestep to 1 min. to get more exact results.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US">What I realized is, that the output
started to show discrete results in an hour interval.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US">My Question: Could it be that TRNSYS
has a limitation in the active layer system, to solve it in
one hour timesteps only?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US">Can I change this somehow?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US">Thanks for your help,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US">Florian<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
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73, 125);" lang="EN-US"><o:p> </o:p></span></p>
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"Calibri","sans-serif"; color: rgb(31,
73, 125);" lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt;
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DI(FH)</span></b><span style="color: rgb(31, 73, 125);"
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***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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