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<p>Ilyas and Pierre,</p>
<p> Make sure too that the timestep you have chosen for your
simulation is appropriate. TRNSYS controller models can make one
control decision per timestep and if the timestep is too long then
overheating and undercooling can occur, especially in zones that
have lower thermal capacitance. I typically use timesteps ranging
between 1 and 5 minutes for HVAC system simulations.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 02/07/2017 18:19, Ilyas KHELIFA
KERFAH wrote:<br>
</div>
<blockquote
cite="mid:AM5P194MB0100C44DF32534AEF87F5E37E0420@AM5P194MB0100.EURP194.PROD.OUTLOOK.COM"
type="cite">
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<div>Hello,</div>
<div><br>
</div>
<div>I modeled with TRNSYS an apartment with heating in the
corridor. I had a problem that the temperature of the rooms
does not increase gradually so I multiply the thermal
capacitance * 50 in all the rooms and the corridor. This model
gave a good result for the rooms. But in the corridor where
the heating is installed, I find that the temperatures
increase and decrease in a single shot without warming and
cooling time rate. </div>
<div><br>
</div>
<div>N.B. for the exchange of air between the pieces I put a
pipe with a flow of 450 kg / h between all the rooms. thank
you.</div>
<div>Best regards,</div>
<br>
<p>Ilyas and pierre Etienne </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
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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