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Salim,<br>
I think this will just result in convergence problems. When you define
an automatic heating type in TRNBuild, you are predefining the
temperature of the zone and you are asking Type56 to tell you how much
heat was necessary in order to get there. If you give Type56 a heating
rate from some external system, you are asking Type56 to calculate the
resulting zone temperature. You can do one or the other but you can't
really do both at the same time. I would recommend that you use Type108
as a thermostat watching your zone temperature and turning on and off
your external heating system to maintain the set point.<br>
Best,<br>
David<br>
<br>
On 7/9/2010 09:55, salim mokraoui wrote:
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<p class="MsoNormal">Dear Trnsys users,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">If I want to use an external
heating system
(external from type 56), can I define, in the same time, the heating
from Trnbuild,
i.e. specify a set temperature of the zone and calculate the heating
rate as an
input to type 56 (output from the external system).<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">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal">Salim MOKRAOUI<o:p></o:p></p>
<p class="MsoNormal">Faculté des sciences de Nancy - LERMAB<o:p></o:p></p>
<p class="MsoNormal">BP 239<o:p></o:p></p>
<p class="MsoNormal">54506 Vandoeuvre.<o:p></o:p></p>
<p class="MsoNormal">Tél 03 83 68 48 47 - mél
<a class="moz-txt-link-abbreviated" href="mailto:salim.mokraoui@lermab.uhp-nancy.fr">salim.mokraoui@lermab.uhp-nancy.fr</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></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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