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<p><span style="mso-fareast-language:ES">José Javier,</span></p>
<p><span style="mso-fareast-language:ES"> I would put a Type65 on
the cooling coil to see the inlet and outlet temperatures and
flowrates on both the air and water sides as the simulation
progresses. I think you may find that the inlet liquid
temperature may not always be coming in as cold as you need it
to in order to bring the air temperature down as far as 2.8C. <br>
</span></p>
<p><span style="mso-fareast-language:ES"> Also make sure that there
is some thermal capacitance in the liquid loop. If you have just
the cooling coil, a pump, and a chiller (or whatever device is
providing the cold liquid) then you'll want to add pipes and/or
a tank so that the loop is numerically stable as so as to more
accurately model the transient impact of the loop heating up and
cooling down as a function of time (rather than instantaneously
because you are only using quasi steady state models)</span></p>
<p><span style="mso-fareast-language:ES">kind regards,</span></p>
<p><span style="mso-fareast-language:ES"> David</span></p>
<p><span style="mso-fareast-language:ES"><br>
</span></p>
<div class="moz-cite-prefix">On 06/15/2021 09:28, RUBIO RUBIO, JOSÉ
JAVIER via TRNSYS-users wrote:<br>
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<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB">I am using the Type 508
to model a cooling coil with the outlet air temperature set
to a constant value. As far as I am concerned, there is
enough air flowrate as well as fluid flowrate during the
simulation but the outlet air temperature is much higher
than the setpoint (for example, the setpoint is 2.8 ºC and
the outlet air temperature is 12 ºC). Anyone can help me to
understand why is that?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ES"
lang="EN-GB">Thanks in advance,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ES"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ES"
lang="EN-GB">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ES"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ES">José
Javier Rubio Rubio.<o:p></o:p></span></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
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
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